項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   CH12455    1   CH12455    汽缸蓋組合       

    (1) CH12455    1   CH12455    汽缸蓋裝備 -EXCH                      

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   CH12569    26  CH12569    汽缸蓋螺拴       

    2   CH12571    26  CH12571    墊圈         

    3   CH12570    8   CH12570    螺拴         

    4   CH12454    1   CH12454    密封墊 - 汽缸蓋         

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   KRP1688    1   KRP1688    溫度感應(yīng)傳感器                    

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    2      1      溫度感應(yīng)傳感器          

    3   CH10146    1   CH10146    密封O型圈       

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   KRP1688    1   KRP1688    溫度感應(yīng)傳感器          

    4   KRP1699    1   KRP1699    油壓感應(yīng)傳感器裝備         

    7   T401655    1   T401655    肘管         

    8   T409314    1   T409314    密封O型圈       

    9   KRP1687    1   KRP1687    溫度感應(yīng)傳感器          

    12  KRP1693    1   KRP1693    氣壓感應(yīng)傳感器裝備         

    15  CH12642    1   CH12642    承接器       

    16  CH11880    1   CH11880    密封O型圈              

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   CH10054    13  CH10054    纜拉桿       

    2   T401576    2   T401576    接線夾       

    3   CH12286    2   CH12286    螺拴         

    4   CH10303    2   CH10303    墊圈         

    5   CH10420    1   CH10420    接線夾       

    6   CH11814    1   CH11814    公制的螺拴       

    7   CH10277    1   CH10277    墊圈         

    8   CH10072    1   CH10072    夾        

    9   CH12203    1   CH12203    螺拴         

    10  CH11819    1   CH11819    墊圈         

    11  CH10420    1   CH10420    接線夾       

    12  CH12203    1   CH12203    螺拴         

    13  CH11819    1   CH11819    墊圈         

    14  T401660    1   T401660    接線夾       

    15  CH12203    1   CH12203    螺拴         

    16  CH11819    1   CH11819    墊圈         

    17  T401662    1   T401662    接線夾       

    18  CH12203    1   CH12203    螺拴         

    19  CH11819    1   CH11819    墊圈         

    20  CH10420    1   CH10420    接線夾       

    21  CH12671    1   CH12671    圖釘         

    22  CH10277    1   CH10277    墊圈         

    23  T401660    1   T401660    接線夾       

    24  CH11299    1   CH11299    螺拴         

    25  CH11819    1   CH11819    墊圈         

    26  T401297    1   T401297    墊圈         

    27  T401661    1   T401661    接線夾       

    28  CH10922    1   CH10922    螺拴         

    29  CH10099    1   CH10099    墊圈         

    30  T410794    1   T410794    接線夾       

    31  CH11865    1   CH11865    螺帽         

    32  CH11819    1   CH11819    墊圈  

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   T401716    1   T401716    燃料過濾器       

    4   CH12612    2   CH12612    螺拴         

    5   CH11819    2   CH11819    墊圈         

    6   CH10836    1   CH10836    閥        

    7   T400188    1   T400188    密封O型圈       

    8   T400684    1   T400684    密封O型圈       

    9   CH10439    1   CH10439    汽酒共騰泵       

    10  CH10008    1   CH10008    密封墊       

    11  CH10246    1   CH10246    螺拴         

    12  CH10086    1   CH10086    墊圈         

    13  CH11565    1   CH11565    螺拴         

    14  T401636    1   T401636    墊圈         

    15  T408416    1   T408416    密封O型圈       

    16  T407241    1   T407241    連接器       

    17  CH11880    1   CH11880    密封O型圈       

    18  T409325    1   T409325    帽        

    19  T400857    1   T400857    密封O型圈       

    20  T400695    1   T400695    密封O型圈       

    21  T400694    1   T400694    栓塞         

    22  T401715    1   T401715    托架         

    23  T400188    1   T400188    密封O型圈       

    24  CH12017    1   CH12017    非回路閥         

    28  CH11819    2   CH11819    墊圈         

    29  ST43558    2   ST43558I   螺拴         

    30  CH10287    1   CH10287    栓塞         

    31  T406205    1   T406205    密封O型圈       

    32  CH10287    1   CH10287    栓塞         

    33  T406205    1   T406205    密封O型圈

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   T401702    1   T401702    水管         

    2   T401708    1   T401708    承接器       

    3   CH11880    1   CH11880    密封O型圈       

    4   CH11880    1   CH11880    密封O型圈       

    5   CH11410    1   CH11410    栓塞         

    6   CH11880    1   CH11880    密封O型圈       

    7   CH11411    1   CH11411    灰塵盾       

    8   T401711    1   T401711    承接器       

    9   T406205    1   T406205    密封O型圈       

    10  CH10286    1   CH10286    栓塞         

    11  CH11880    1   CH11880    密封O型圈       

    12  T401717    1   T401717    管        

    13  T401704    1   T401704    承接器       

    14  T400646    1   T400646    承接器       

    15  CH11880    1   CH11880    密封O型圈       

    16  T401703    1   T401703    管夾         

    17  CH11819    1   CH11819    墊圈         

    18  CH11807    1   CH11807    螺拴         

    19  T401448    1   T401448    間隔器       

    20  T401714    1   T401714    水管         

    21  CH11595    1   CH11595    連接器       

    22  T406205    1   T406205    密封O型圈       

    23  CH10841    1   CH10841    連接         

    24  CH11880    1   CH11880    密封O型圈       

    25  T401448    1   T401448    間隔器       

    26  T400658    1   T400658    托架         

    27  T400659    1   T400659    托架         

    28  CH11819    1   CH11819    墊圈         

    29  CH11807    1   CH11807    螺拴         

    30  T400660    1   T400660    襯套         

    31  T401714    1   T401714    水管         

    32  CH10026    1   CH10026    連接         

    33  CH11880    1   CH11880    密封O型圈       

    34  CH10026    1   CH10026    連接         

    35  CH11880    1   CH11880    密封O型圈       

    36  T401713    1   T401713    肘管         

    37  CH10133    1   CH10133    密封O型圈       

    38  CH11865    1   CH11865    螺帽         

    39  CH11819    1   CH11819    墊圈         

    40  T400659    1   T400659    托架         

    41  T400660    1   T400660    襯套         

    42  T400658    1   T400658    托架         

    43  T401705    1   T401705    螺拴         

    44  CH10255    1   CH10255    墊圈         

    45  T400659    1   T400659    托架         

    46  T400660    1   T400660    襯套         

    47  T400658    1   T400658    托架         

    48  T401712    1   T401712    間隔器       

    49  T400658    1   T400658    托架         

    50  T400660    1   T400660    襯套         

    51  T400659    1   T400659    托架         

    52  T401707    1   T401707    間隔器       

    53  T401720    1   T401720    桿        

    54  T401706    1   T401706    間隔器       

    55  CH10054    2   CH10054    纜拉桿

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   T401709    1   T401709    線束         

    2   KRP1699    1   KRP1699    油壓感應(yīng)傳感器裝備         

    5   T409314    1   T409314    密封O型圈       

    6   T400689    1   T400689    承接器       

    7   T406205    1   T406205    密封O型圈       

    8   KRP1687    1   KRP1687    溫度感應(yīng)傳感器          

    11  28170044   1   28170044   電力有關(guān)連接器          

    12  2900 A011  2   2900 A011  銷        

    13  CH10420    1   CH10420    接線夾       

    14  CH10054    1   CH10054    纜拉桿       

    15  T410794    1   T410794    接線夾       

    16  CH10054    1   CH10054    纜拉桿       

    17  T410794    1   T410794    接線夾       

    18  CH12203    1   CH12203    螺拴         

    19  CH11819    1   CH11819    墊圈         

    20  CH10054    1   CH10054    纜拉桿           

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   T401573    6   T401573    活塞裝備         

    6   T401572    6   T401572    活塞環(huán)裝備

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    2      1      活塞         

    3   CH12332    1   CH12332    軸頭銷       

    4   CH12331    1   CH12331    CIRCLIP          

    5   CH12331    1   CH12331    CIRCLIP          

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   CH12635    6   CH12635    連桿組合         

    5   KRP3023    1   KRP3023    大頭軸承裝備        

    (5) KRP3023/051   1   KRP3023/051   大頭 BRG 裝備 -U/S         

    (5) KRP3023/076   1   KRP3023/076   大頭 BRG 裝備 -U/S             

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   CH12334    6   CH12334    活塞冷卻噴咀        

    2   CH10239    6   CH10239    螺拴         

    3   CH10255    6   CH10255    墊圈  

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   T401692    1   T401692    燃油濾清器       

    4   CH11299    2   CH11299    螺拴         

    5   CH11865    2   CH11865    螺帽         

    6   T401694    2   T401694    螺拴         

    7   T401001    2   T401001    墊圈         

    8   T401700    1   T401700    板        

    9   T401696    1   T401696    承接器       

    10  T400544    1   T400544    密封O型圈       

    11  CH10822    1   CH10822    工具         

    12  T409314    1   T409314    密封O型圈       

    13  T401693    1   T401693    承接器       

    14  T400544    1   T400544    密封O型圈       

    15  2658 A101  1   2658 A101  帽        

    16  T401697    1   T401697    承接器       

    17  T400544    1   T400544    密封O型圈       

    18  4587260    1   4587260    濾油器       

    19  T401695    1   T401695    水管 -油         

    20  T401698    1   T401698    承接器       

    21  T400762    1   T400762    密封O型圈       

    22  T401695    1   T401695    水管 -油         

    23  T401699    1   T401699    承接器       

    24  T400762    1   T400762    密封O型圈       

    25  T401691    1   T401691    蓋        

    26  T401690    2   T401690    密封O型圈       

    27  T401689    1   T401689    承接器

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   T401657    1   T401657    渦輪增壓器       

    4   T401656    1   T401656    密封墊       

    5   T401658    4   T401658    間隔器       

    6   CH11242    4   CH11242    鎖緊螺母  

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   T400315    1   T400315    壓縮機(jī)

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   T400318    1   T400318    啟動(dòng)馬達(dá)         

    2   CH10310    1   CH10310    密封墊       

    3   T400724    3   T400724    墊圈         

    4   T400720    3   T400720    螺拴                

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   2488 A298  1   2488 A298  壓縮機(jī)       

    2   T401634    1   T401634    栓塞         

    3   T401635    4   T401635    螺拴         

    4   T401636    4   T401636    墊圈                

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   T401628    1   T401628    托架         

    2   T401626    1   T401626    惰輪皮帶輪       

    3   T401627    1   T401627    緊張         

    4   T401629    1   T401629    螺拴         

    5   T405615    1   T405615    墊圈         

    6   CH11777    2   CH11777    螺拴         

    7   CH10099    2   CH10099    墊圈         

    8   CH12447    2   CH12447    螺拴         

    9   CH10277    2   CH10277    墊圈         

    10  317013 2   317013 螺帽         

    11  CH10099    2   CH10099    墊圈                       

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   T400313    1   T400313    交流充電發(fā)電機(jī)          

    2   T401641    1   T401641    皮帶輪       

    3   T401642    4   T401642    螺拴         

    4   T407566    4   T407566    墊圈         

    項(xiàng)目   零配件號(hào)碼         新件號(hào)   描述  

    1   T401643    6   T401643    噴油器       

    (1) T401643R   6   T401643R   噴油器           

    7   CH12324    6   CH12324    噴油器搖臂座        

    8   CH12326    6   CH12326    螺拴             

replace the connectors or wiring. Ensure that all of

the seals are properly in place and ensure that the

connectors are completely coupled.

Verify that the repair eliminates the fault.

STOP.

Test Step 2. Check the Supply Voltage at

the Sensor Connector

A. Turn the keyswitch to the OFF position.

B. Disconnect all of the following analog sensors at

the sensor connector:

•

• Inlet manifold pressure sensor

• Atmospheric pressure sensor

C. Turn the keyswitch to the ON position.

D. Measure the voltage between terminal 1 (5 V

analog supply) and terminal 2 (sensor return) at

each of the sensor connectors.

E. Turn the keyswitch to the OFF position.

F.  Reconnect all of the sensors.

Expected Result:

The voltage is 5.0 ± 0.16 VDC.

Results:

is correct. Proceed to Test Step 3.

voltage is incorrect.

Repair: Perform the diagnostic functional test

in the Troubleshooting Guide, “5 Volt Engine

Pressure Sensor Supply Circuit - Test”.

STOP.

Test Step 3. Check for Active Diagnostic

Codes

A. Connect the elec tronic service tool to the

diagnostic connector.

B. Turn the keyswitch to the ON position.

C. Monitor the active diagnostic code screen on the

electronic service tool. Check and record any

active diagnostic codes.

diagnostic codes to bec ome activ e.

D. Determine if the fault is related to an open circuit

diagnostic code 03 or a short circuit diagnostic

code 04.

Expected Result:

No diagnostic codes are active.

Results:

• OK – No diagnostic codes are active.

Repair: The fault may have been related to

a faulty connection in the harness. Carefully

reinspect the connectors and wiring. Refer to the

Troubleshooting Guide, “Electrical Connectors -

Inspect”.

STOP.

• Not OK – A short circuit diagnostic c ode (04) is

active at this time. Proceed to Test Step 4.

• Not OK – An open circuit diagnostic code (03) is

active at this time. Proceed to Test Step 5.

Sensor in Order to Create an Open Circuit

A. Turn the keyswitch to the OFF position.

B. Disconnect the sensor connector of the sensor

with the short circuit diagnostic code (04).

C. Turn the keyswitch to the ON pos ition. Wait at

least 15 seconds for activation of the diagnostic

codes.

D. Access the “Active Diagnostic Code” screen on

the electronic service tool. Check for an active

open circuit diagnostic code (03).

E. Turn the keyswitch to the OFF position.

Expected Result:

An open circuit diagnostic code 03 is now active for

the disconnected sensor.

Results:

active before disconnecting the sensor. An open

circuit diagnostic code (03) became active after

disconnecting the sensor.

This document has been printed from SPI². Not for Resale

102

Troubleshooting Section

KENR6224

•

Repair: Temporarily connect a new sensor to the

harness, but do not install the new sensor in the

engine. Verify that there are no active diagnostic

codes for the sensor. If there are no active

diagnostic codes for the sensor, permanently

install the new sensor. Clear any logged diagnostic

codes.

STOP.

Not OK – There is a short circuit between the

sensor harness connector and the ECM. Leave the

sensor disconnected. Proceed to Test Step 8.

E. Measure the resistance between the terminal for

the sensor signal wire at the ECM and engine

ground.

F.  Rec onnect P1 and P2.

Expected Result:

Each resistance measurement is greater than 20,000

Ohms.

Results:

• OK – Each of the resistance measurements is

A. Turn the keyswitch to the ON position.

B. Disconnect the suspect sensor.

C. Measure the voltage between terminal 3 (signal)

and terminal 2 (sensor return) at the sensor

connector.

D. Turn the keyswitch to the OFF position.

•

greater than 20,000 Ohms. Proceed to Test Step 7.

Not OK – At least one resistance measurement is

less than 20,000 Ohms.

Repair: The low resistance measurement indicates

a low resistance between two or more wires.

Repair the connectors or wiring and/or replace the

connectors or wiring.

STOP.

The voltage is 11 ± 2 VDC.

Results:

to the ECM from the sensor connector is OK.

Repair: The open circuit is in the sensor o, r the

wire between the sensor and the sensor connector.

Replac e the sensor. Do not install the sensor in

the engine. Verify that no diagnostic codes are

active for the sus pect sensor before permanently

installing the s ensor.

STOP.

voltage is incorrect. Proceed to Test Step 6.

Test Step 6. Check the Signal Wire for a

Short Circuit

A. Turn the keyswitch to the OFF position.

B. Disconnect ECM connectors P1 and P2.

C. Disconnect the connector for the suspect sensor.

D. Measure the resistance between the terminal

for the sensor signal wire at the ECM and

every terminal on ECM connector P1 and ECM

connector P2.

A. Turn the keyswitch to the OFF position.

B. Install a jumper wire with Ampseal sockets on

each end between terminal 2 (sensor return) and

terminal 3 (signal) on the connector for the suspec t

sensor. Connect the jumper on the harness side

of the connector.

C. Turn the keyswitch to the ON position.

D. Wait at least 15 seconds for activ ation of the short

circuit diagnostic code 04.

Note: Monitor the “Active Diagnostic Codes” screen

on the electronic service tool before installing the

jumper wire and after installing the jumper wire.

E. Remove the jumper wire.

F.  Turn the keyswitch to the OFF position.

Expected Result:

A short circuit diagnostic code 04 is active when the

jumper wire is installed. An open circuit diagnostic

code 03 is activ e when the jumper wire is removed.

Results:

• OK – The engine harness and the ECM are OK.

This document has been printed from SPI². Not for Resale

KENR6224

103

Troubleshooting Section

•

Repair: Temporarily connect a new sensor to the

harness, but do not install the new sensor in the

engine. Verify that there are no active diagnostic

codes for the sensor. If there are no active

diagnostic codes for the sensor, permanently

install the new sensor. Clear any logged diagnostic

codes.

STOP.

Not OK – The open circuit diagnostic code 03

remains active with the jumper in place. The

open circuit is between the ECM and the sensor

connector. Proceed to Test Step 8.

Expected Result:

An open circuit diagnostic code 03 is active when

the sensor signal wire is removed from the ECM

connector. A short circuit diagnostic c ode 04 is active

when the signal wire is connected to the sensor

return.

Results:

• OK – The ECM is operating properly. The fault is

in the wiring between the ECM and the sensor

connector.

Repair: If the code is active for more than one

A. Turn the keyswitch to the OFF position.

B. Check the operation of the ECM by creating an

open circuit at the ECM.

a. Remove the signal wire for the suspect sensor

from the P2 ECM connector.

b. Remove the sensor return for the s uspect

sensor from the P2 ECM connector.

Note: Disconnecting the sensor return from the ECM

will generate an open circuit diagnostic code for all

sensors that are connected to the sensor return.

Troubleshoot the original diagnostic code. Delete the

logged diagnostic codes when you are finished.

c. Reconnect the ECM connector.

d. Turn the keyswitch to the ON position. Monitor

the “Active Diagnostic Code” screen on the

electronic service tool. Wait at least 15 seconds

•

sens or, the fault is most likely in the return wire for

the sensor. Repair the return wire for the sensor

or replace the harness.

If the c ode is only active for one sensor, the fault is

most likely in the signal wire for the sensor. Repair

the signal wire for the sensor.

STOP.

Not OK – One of the following conditions exists:

The open circuit diagnostic code 03 is not active

when the sensor signal wire is disconnected. The

short c ircuit diagnostic code 04 is not active when

the wire jumper is installed.

Repair: Replace the ECM. Refer to the

Troubleshooting Guide, “Replacing the ECM”.

Verify that the fault is eliminated.

STOP.

i02569903

for activation of the code.

Engine

Speed/Timing Sensor

An open circuit diagnostic code (03) should be

active for the suspect sensor.

C. Check the operation of the ECM by creating a

short at the ECM.

a. Install a wire jumper between the two terminals

for the sensor signal and the sensor return.

b. Reconnect the ECM connector.

c. Monitor the “Active Diagnostic Code” screen

on the electronic serv ice tool. Wait at least 15

seconds for activation of the code.

A short circuit diagnostic code (04) should be

active when the wire jumper is installed.

d. Remove the wire jumper and reconnect all

wires.

Circuit - Test

System Operation Description:

Use this procedure to troubleshoot any suspect faults

with the following sensors:

• Crankshaft position sensor

• Cams haft position sensor

This procedure covers the following open circuit

diagnostic codes and short circuit diagnostic codes:

• 190-02 Engine Speed Sensor erratic, intermittent

or incorrect

• 190-09 Engine Speed Sensor abnormal update

rate

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•

•

•

•

•

190-11 Engine Speed Sensor mechanical failure

190-12 Engine Speed Sensor failure

342-02 Secondary Engine Speed Sensor erratic,

intermittent or incorrect

342-11 Secondary Engine Speed Sensor other

failure mode

342-12 Secondary Engine Speed Sensor failure

Both sensors are magnetic sensors. The two sensors

are not interchangeable. Do not switch the positions

of the sensor. If the sensors are replaced, a timing

calibration is not necessary.

If a replacement of the ECM is required, the ECM

parameters and the timing calibration can be

transferred from the suspect ECM to the replacement

ECM. Timing calibration will not be necessary. This

feature requires the electronic servic e tool and this

feature is only possible if the existing ECM can

communicate with the electronic service tool. Use the

The engine uses 2 position sensors. The cranks haft

position sensor detects the unique pattern of the

crankshaft gear and the cams haft position sensor

picks up the unique pattern of the camshaft gear.

Both of the position sensors detect the reference for

engine speed and timing from a unique pattern on the

gear. The Engine Control Module (ECM) measures

the time between the pulses that are created by the

sensors as the gears rotate in order to determine rpm.

Under normal operation, the camshaft position sensor

is used to determine timing for starting purposes.

The camshaft position sensor is used to determine

when the piston in the No. 1 cylinder is at the top of

the compression stroke. When the timing has been

established, the crankshaft position sensor is then

used to determine engine speed.

After locating the No. 1 cy linder, the ECM triggers

each electronic unit injector in the correct firing order

and at the correct timing. The actual timing and

duration of each injection is based on engine rpm

and load. If the engine is running and the signal from

the crankshaft position sensor is lost, a slight change

in engine performanc e will be noticed when the ECM

performs the changeover to the camshaft position

sensor. Loss of the signal from the camshaft position

sensor during engine operation will not result in any

noticeable change in engine performance. However,

if the signal from the camshaft position sensor is not

present during start-up the following conditions may

exist:

• The engine may require a slightly longer period

of time to s tart-up.

• The engine may run rough for a few seconds until

the ECM determines the proper firing order with

the crankshaft position sensor.

The engine will start and the engine will run when only

one sensor signal is present. The loss of the signal

from both of the sens ors during engine operation will

result in the termination of injection and the shutting

down the engine by the ECM. The loss of the signal

from both of the sensors during start-up will prevent

the engine from starting.

“Copy Configuration - ECM Replacement” feature on

the electronic service tool.

Complete all of the following tasks when you

install a position sensor:

• Lubricate the O-ring with oil.

• Ensure that the sensor has a face seal inside the

connector body. If a seal is damaged or missing,

replace the s eal.

• Ensure that the s ensor is fully seated into the

engine before tightening the bracket bolt.

• Ensure that the connector is latched on both sides.

• Ensure that the harness is properly secured, and

ensure that the tie-wraps are placed in the correct

location.

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Illustration 40

Schematic for position s ensors

g01287361

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KENR6224

Illustration 41

P2 ECM connector

(P2-25) Primary engine speed/timing −

(P2-26) TDC probe +

(P2-35) Primary engine speed/timing +

(P2-36) TDC probe −

(P2-46) Secondary engine speed/timing +

(P2-47) Secondary engine speed/timing −

g01099116

rpm on the electronic service tool while the engine is

being cranked. The electronic service tool may need

to be powered from another battery while the engine

is being c ranked.

D. Check for one of the following logged diagnostic

codes or active diagnostic codes:

• 190-02

• 190-09

• 190-11

• 190-12

• 342-02

• 342-11

• 342-12

Expected Result:

One of the diagnostic codes that are listed above are

logged or active.

Note: If the engine will not start and the electronic

service tool displayed 0 rpm during cranking, selec t

“No Engine rpm”.

Results:

• 190-XX or 342-XX – There is an active diagnostic

code or a logged diagnostic code. Proceed to Test

Step 3.

• Not OK – Refer to “Troubleshooting Without a

Diagnostic Code” if the following conditions exist:

The codes are not active. The codes are not

logged. The engine is not running properly. STOP.

• No Engine rpm – Engine rpm is not indicated on

the electronic service tool. Proceed to Test Step 2.

Sensors

A. Turn the keyswitch to the OFF position.

Test Step 1. Check for Diagnostic Codes

A. Connect the electronic service tool to the

diagnostic connector.

B. Turn the keyswitch to the ON position.

C. Start the engine and run the engine until the

engine is at normal operating temperature.

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107

Troubleshooting Section

5.

Ensure that the harness is properly secured,

and ensure that the tie-wraps are placed in the

correct location.

Illustration 42

Typical speed sensor

g01146452

•

Proceed to Test Step 3.

Not OK – At least one of the components of the

sens or is not OK.

Repair: Obtain a new sensor. Perform the following

procedure in order to properly install the new

sens or:

1. Lubricate the O-ring with engine oil.

2. Fully seat the sensor in the engine.

(1) Bracket

(2) Flange

(1) O-ring

B. Vis ually inspect the sensor without removing the

sensor from the engine. Flange (2) must be flush

against the engine in order to ensure proper

operation. Inspect bracket (1) in order to ensure

that the installation allows the flange of the sensor

to be flush against the engine. Verify that the

bracket is not bent.

Note: The bracket cannot be replaced separately.

C. Remove the sensor. Ensure that one O-ring (3)

is installed on the sensor. Check the O-ring for

damage. Replace the O-ring, if necessary.

Expected Result:

The components of the sensor are OK.

Results:

• OK – The components of the sensor are OK.

Repair: Perform the following procedure in order

to properly install the sensor:

1. Lubricate the O-ring with engine oil.

2. Fully seat the sensor in the engine.

Note: If the sensor will not fully seat into the engine,

replace the sensor.

3. Tighten the bracket bolt.

4. Connect the electrical connector to the sensor.

Verify that the connector is latched on both

sides.

replace the sensor.

3. Tighten the bracket bolt.

4. Connect the electrical connector to the sensor.

Verify that the connector is latched on both

sides.

5. Ensure that the harness is properly secured,

and ensure that the tie-wraps are placed in the

correct location.

Verify that the repair eliminates the fault.

STOP.

Resistance through the Engine Harness

A. Turn the keyswitch to the OFF position.

B. Thoroughly inspect the J2/P2 ECM connector.

Refer to the Troubleshooting Guide, “Electrical

Connectors - Inspect” for details.

C. Perform a 45 N (10 lb) pull test on the wires that

are associated with the position sensors .

D. Ensure that the latch tab on each sensor

connector is properly latched.

E. Check the allen head screw on each ECM

connector for the proper torque. Refer to the

Troubleshooting Guide, “Electrical Connectors -

Inspect” for the correct torque values.

F.  Repair the harness or repair the connector if a

fault is found.

G. Ensure that the wiring harness is correctly routed

and secured at the correct locations.

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H. Ensure that the harness wiring is not pulled

too tightly. When the harness wiring is pulled

too tightly, vibrations or movement can cause

intermittent connections.

I.  Inspect the harness wiring for nicks and abrasions.

J. If the harness and the connector are OK,

dis connect the J2/P2 ECM connector.

K. If you are troubleshooting a fault with the

crankshaft position sensor, perform the following

procedure:

a. Measure the sens or resistance between P2-35

(Primary engine speed/timing positive) and

P2-25 (Primary engine speed/timing negative).

b. Check for an intermittent open circuit or for a

short circuit by moving the harness while you

take the resistance measurement. Pull the

wires that are directly behind the sensor or

shake the wires that are directly behind the

sensor.

Resistance  ............................ 75 to 230 Ohms

L. If you are troubleshooting a fault with the camshaft

position sensor, perform the following procedure:

a. Measure the sens or resistance between P2-46

(Secondary engine speed/timing positive)

and P2-47 (Secondary engine speed/timing

negative).

b. Check for an intermittent open circuit or for a

short circuit by moving the harness while you

take the resistance measurement. Pull the

wires that are directly behind the sensor or

shake the wires that are directly behind the

sensor.

Resistance  ........................ 600 to 1800 Ohms

Expected Result:

The readings are within the spec ifications.

Results:

• OK – The readings are within the specifications.

Neither a short circuit nor an open circuit is

indicated. Proceed to Test Step 5.

• Not OK – The readings are not within the

specifications. The sensor resistance is not within

the acceptable range when the sensor resistance

is measured through the engine harness. Proceed

to Test Step 4.

A. Disconnect the suspect sensor from the engine

harness.

B. Thoroughly inspect the sensor connectors.

Refer to the Troubleshooting Guide, “Electrical

Connectors - Inspect” for details.

C. If you are troubleshooting a fault with the

crankshaft position sensor, perform the following

procedure:

a. Measure the sensor resistance between J401-2

(Primary engine speed/timing positive) and

J401-1 (Primary engine speed/timing negative).

Resistance ............................. 75 to 230 Ohms

D. If you are troubleshooting a fault with the camshaft

position sensor, perform the following procedure:

a. Measure the sensor resistance between J402-2

(Secondary engine speed/timing positive)

and J402-1 (Secondary engine speed/timing

negative).

Resistance  ........................ 600 to 1800 Ohms

Expected Result:

The readings are within the specifications.

Results:

Proceed to Test Step 5.

spec ifications.

Repair: Perform the following procedure in order

to check and install the new sensor:

1. Before you install the new sensor, measure the

resistance of the new sensor.

If the new sensor resistance is within the

specification, install the new sensor in the

engine according to the following procedure:

a. Loosen the bolt and remove the bolt that

holds the sensor mounting bracket to the

engine.

b. Ensure that one O-ring is installed on the

new sensor. Verify that the O-ring is free of

damage.

c. Lubricate the O-ring.

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