項目   零配件號碼         新件號   描述  

    1   CH12895    1   CH12895    引擎控制組件ECM        

    2   CH10297    4   CH10297    圖釘         

    3   CH10272    8   CH10272             

    4   CH10108    4   CH10108    間隔器       

    5   CH10279    8   CH10279    墊圈         

    6   CH11932    2   CH11932    托架         

    7   CH12655    1   CH12655    蓋        

    8   CH12370    4   CH12370    帽        

    項目   零配件號碼         新件號   描述  

    1   T401652    1   T401652    節(jié)溫器殼         

    4   CH12474    2   CH12474    栓塞         

    5   CH11621    2   CH11621    密封O型圈       

    6   CH10285    1   CH10285    栓塞         

    7   CH10161    1   CH10161    密封O型圈       

    8   CH12171    4   CH12171    螺拴         

    9   CH12175    4   CH12175    螺拴         

    10  CH10277    4   CH10277    墊圈         

    11  CH12167    1   CH12167    調(diào)整器       

    12  CH11620    1   CH11620    節(jié)溫器       

    13  CH12166    1   CH12166    密封墊 - 節(jié)溫器殼       

    14  CH12165    1   CH12165    密封墊 - 節(jié)溫器殼       

    15  CH10287    3   CH10287    栓塞         

    16  CH10146    3   CH10146    密封O型圈       

    17  CH12661    1   CH12661    密封O型圈       

    18  CH12168    1   CH12168    管        

    19  CH10201    1   CH10201    密封O型圈       

    20  CH10201    1   CH10201    密封O型圈

    項目   零配件號碼         新件號   描述  

    1   CH12684    1   CH12684    缸體組合          - O 圈          

    項目   零配件號碼         新件號   描述  

    2      1      缸體         

    3   CH11752    5   CH11752    栓塞         

    4   CH12489    6   CH12489    缸套 - 壓八配合         

    5   CH12488    6   T400359    密封墊 -油       

    6   CH12630    7   CH12630    凸輪軸襯套       

    7      7      軸承蓋       

    8   CH12631    14  CH12631    螺拴         

    9   CH12632    14  CH12632    墊圈         

    項目   零配件號碼         新件號   描述  

    1   CH10032    3   CH10032    栓塞         

    2   CH11713    2   CH11713    合釘         

    3   CH11714    6   CH11714    合釘         

    4   T400363    3   T400363    栓塞         

    5   T409314    3   T409314    密封O型圈

    項目   零配件號碼         新件號   描述  

    1   CH12287    6   CH12287    螺拴             

    項目   零配件號碼         新件號   描述  

    1   CH12481    1   CH12481    軸        

    4   CH12484    1   CH12484    搖臂座       

    5   CH12483    2   CH12483    軸環(huán)         

    6   T400226    1   T400226    搖臂         

    7   CH12511    1   CH12511    搖臂         

    8   CH12509    1   CH12509    螺帽         

    9   CH12512    1   CH12512    螺旋         

    10  CH10229    1   CH10229    密封O型圈       

    11  CH12702    1   CH12702    樞        

    12  CH12514    1   CH12514    搖臂         

    13  CH12513    2   CH12513    螺旋         

    14  CH11865    2   CH11865    螺帽         

    15  CH12278    12  CH12278    結(jié)軸塊       

    16  CH12795    12  CH12795    PUSHROD          

    17  CH12808    6   CH12808    PUSHROD             

    項目   零配件號碼         新件號   描述  

    1   CH12586    1   CH12586    軸        

    4   CH12590    1   CH12590    托架         

    5   CH11807    7   CH11807    螺拴         

    6   CH12587    12  CH12587    滾子         

    7   CH12585    6   CH12585    滾子         

    8   CH12589    5   CH12589    托架         

    9   CH12588    1   CH12588    托架         

    10  CH12591    1   CH12591    合釘                       

    項目   零配件號碼         新件號   描述  

    1   CH12117    1   CH12117    油底殼       

    2   CH12118    1   CH12118    密封墊 -油底殼          

    3   CH11571    1   CH11571    排泄栓塞         

    4   CH11573    1   CH11573    密封O型圈       

    5   T400251    1   T400251    栓塞         

    6   T400544    1   T400544    密封O型圈       

    7   T400251    1   T400251    栓塞         

    8   T400544    1   T400544    密封O型圈       

    9   T401275    1   T401275    承接器       

    10  T406205    1   T406205    密封O型圈       

    11  2461 A503  1   2461 A503  關閉閥       

    12  CH12124    13  CH12124    螺拴         

    13  CH12119    13  CH12119    密封墊       

    14  CH10113    13  CH10113    墊圈         

    15  CH12657    1   CH12657    圖釘         

    16  CH12119    1   CH12119    密封墊       

    17  CH10113    1   CH10113    墊圈         

    18  T400250    1   T400250    管 - 油的吸入       

    19  CH10098    1   CH10098    密封O型圈       

    20  CH10041    2   CH10041    螺拴         

    21  T401636    2   T401636    墊圈         

    22  CH10099    2   CH10099    墊圈         

    23  CH12122    2   CH12122    螺拴  

    項目   零配件號碼         新件號   描述  

    1   CH12436    1   CH12436    凸輪軸       

    6   CH12435    1   CH12435    蓋        

    7   CH12437    1   CH12437    密封O型圈       

    8   CH11815    4   CH11815    螺拴         

    9   CH10277    4   CH10277    墊圈         

    10  CH12438    4   CH12438    螺拴             

    項目   零配件號碼         新件號   描述  

    2      1      凸輪軸       

    3   CH12520    1   CH12520    凸輪軸傳動機構(gòu)          

    4   CH12519    1   CH12519    推力墊圈         

    5   CH10005    1   CH10005    半圓鍵              

    項目   零配件號碼         新件號   描述  

    1   T401701    1   T401701    燃油濾清器       

    項目   零配件號碼         新件號   描述  

    1   T401729    1   T401729    承接器       

    2   T400248    1   T400248    密封O型圈       

    3   T401731    1   T401731    管        

    4   T401735    2   T401735    搖臂座       

    5   T401734    1   T401734    水管         

    6   T401730    1   T401730    承接器       

    7   T400248    1   T400248    密封O型圈       

    8   T401725    1   T401725    閥        

    9   T401736    4   T401736    螺拴         

    10  CH10303    4   CH10303    墊圈         

    11  T401724    1   T401724    密封墊       

    12  T401732    1   T401732    螺拴         

    13  CH11819    1   CH11819    墊圈         

    14  T401737    1   T401737    螺拴         

    15  CH11819    1   CH11819    墊圈         

    16  T401723    1   T401723    管集箱箱         

    20  T401726    1   T401726    連接器       

    21  T400248    1   T400248    密封O型圈       

    22  T401733    1   T401733    水管         

    23  T401735    2   T401735    搖臂座       

    24  T401728    1   T401728    管        

    25  T401727    1   T401727    承接器       

    26  T401291    1   T401291    密封O型圈          

    項目   零配件號碼         新件號   描述  

    1   T400172    1   T400172    機油冷卻器       

    2   T400162    1   T400162    端帽         

    3   T400173    1   T400173    密封O型圈       

    4   CH10291    1   CH10291    栓塞         

    5   CH12240    1   CH12240    密封O型圈       

    6   CH12474    1   CH12474    栓塞         

    7   CH11621    1   CH11621    密封O型圈       

    8   CH10395    1   CH10395    聯(lián)結(jié)器       

    9   CH12238    1   CH12238    密封O型圈       

    10  CH12238    1   CH12238    密封O型圈       

    11  CH11565    6   CH11565    螺拴         

    12  CH10277    6   CH10277    墊圈         

    13  T400175    1   T400175    端帽         

    14  T400173    1   T400173    密封O型圈       

    15  CH11375    1   CH11375    栓塞         

    16  CH10119    1   CH10119    密封O型圈       

    17  CH12447    4   CH12447    螺拴         

    18  CH10277    4   CH10277    墊圈         

    19  T400174    1   T400174    搖臂座       

    20  CH12662    1   CH12662    水管         

    21  T400174    1   T400174    搖臂座       

    22  CH12231    1   CH12231    密封O型圈       

    23  T401049    1   T401049    水肘管       

    24  CH10285    1   CH10285    栓塞         

    25  CH10161    1   CH10161    密封O型圈       

    26  CH10140    1   CH10140    螺拴         

    27  CH10277    1   CH10277    墊圈         

    28  CH12447    1   CH12447    螺拴         

    29  CH10277    1   CH10277    墊圈  

    項目   零配件號碼         新件號   描述  

    1   CH12455    1   CH12455    汽缸蓋組合       

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

    項目   零配件號碼         新件號   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         

    項目   零配件號碼         新件號   描述  

    1   KRP1688    1   KRP1688    溫度感應傳感器          

    4   KRP1699    1   KRP1699    油壓感應傳感器裝備         

    7   T401655    1   T401655    肘管         

    8   T409314    1   T409314    密封O型圈       

    9   KRP1687    1   KRP1687    溫度感應傳感器          

    12  KRP1693    1   KRP1693    氣壓感應傳感器裝備         

    15  CH12642    1   CH12642    承接器       

    16  CH11880    1   CH11880    密封O型圈

    項目   零配件號碼         新件號   描述  

    2   CH12652    1   CH12652    氣壓感應傳感器          

    3   CH11880    1   CH11880    密封O型圈       

    3   CH10133    1   CH10133    密封O型圈       

    項目   零配件號碼         新件號   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                

    項目   零配件號碼         新件號   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

    項目   零配件號碼         新件號   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   &, amp;, nbsp;     

    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

    項目   零配件號碼         新件號   描述  

    1   T401709    1   T401709    線束         

    2   KRP1699    1   KRP1699    油壓感應傳感器裝備         

    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    溫度感應傳感器          

    11  28170044   1   28170044   電力有關連接器          

    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

    項目   零配件號碼         新件號   描述  

    2      1      感應傳感器       

    3   CH10132    1   CH10132    密封O型圈          

    項目   零配件號碼         新件號   描述  

    2      1      溫度感應傳感器          

    3   T406205    1   T406205    密封O型圈       

    3   CH10230    1   CH10230    密封O型圈                 

    項目   零配件號碼         新件號   描述  

    1   T401573    6   T401573    活塞裝備         

    6   T401572    6   T401572    活塞環(huán)裝備              

    項目   零配件號碼         新件號   描述  

    1   T401573    6   T401573    活塞裝備         

    6   T401572    6   T401572    活塞環(huán)裝備              

    項目   零配件號碼          新件號   描述  

    2      1      活塞         

    3   CH12332    1   CH12332    軸頭銷       

    4   CH12331    1   CH12331    CIRCLIP          

    5   CH12331    1   CH12331    CIRCLIP          

    項目   零配件號碼         新件號   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             

    項目   零配件號碼         新件號   描述  

    2      1      連桿         

    3      1      連桿小的一端襯套        

    4   CH12499    2   CH12499    連桿螺拴  

    項目   零配件號碼         新件號   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

    項目   零配件號碼         新件號   描述  

    1   T400315    1   T400315    壓縮機           

    項目   零配件號碼         新件號   描述  

    1   T400318    1   T400318    啟動馬達         

    2   CH10310    1   CH10310    密封墊       

    3   T400724    3   T400724    墊圈         

    4   T400720    3   T400720    螺拴                    

    項目   零配件號碼         新件號   描述  

    1   2488 A298  1   2488 A298  壓縮機       

    2   T401634    1   T401634    栓塞         

    3   T401635    4   T401635    螺拴         

    4   T401636    4   T401636    墊圈                

    項目   零配件號碼         新件號   描述  

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

    2   T401641    1   T401641    皮帶輪       

    3   T401642    4   T401642    螺拴         

    4   T407566    4   T407566    墊圈                       

    項目   零配件號碼         新件號   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         

customer connector and the 70 pin customer

connector to 2.25 ± 0.25 N·m (20 ± 2 lb in).

Expected Result:

The ECM connector is secure and the allen head

screws are properly torqued.

Results:

• OK – The ECM connectors and the customer

connector is properly connected. Proceed to Test

Step 8.

• Not OK – The allen head screws for the ECM

connector or the customer connector is damaged.

Repair: Repair the connector or replace the

connector, as required. Verify that the repair

eliminates the fault.

STOP.

Test Step 8. Perform the “Wiggle Test”

on the Electronic Service Tool

A. Select the “Wiggle Tes t” from the diagnostic tests

on the electronic serv ice tool.

B. Choose the appropriate group of parameters to

monitor.

C. Press the “Start” button. Wiggle the wiring harness

in order to reproduce intermittent faults.

If an intermittent fault exists, the status will be

highlighted and an audible beep will be heard.

Expected Result:

No intermittent faults were indicated during the

“Wiggle Test”.

Results:

harness and connectors appear to be OK. If you

were sent from another procedure, return to the

procedure and c ontinue testing. If this test has

resolved the fault, return the engine to service.

STOP.

indicated.

Repair: Repair the harness or the connector. Verify

that the repair eliminates the fault.

STOP.

i02568609

Electrical Power Supply Circuit

- Test

System Operation Description:

Use this procedure to troubleshoot any suspec ted

faults with the electrical power supply.

This procedure covers the following diagnostic codes:

• 0168-02 Electrical System Voltage erratic,

intermittent, or incorrect

This procedure tests whether proper voltage is being

supplied to the Electronic Control Module (ECM).

Unswitched battery voltage is supplied through the

customer connector to the ECM at P1-48, P1-52, and

P1-53. The negative battery is s upplied to the ECM

at P1-61, P1-63, and P1-65. The ECM receives the

input from the keyswitch at P1-70 when the keyswitch

is in the ON position or the START position. When

the ECM detects battery voltage at this input, the

ECM will power up. When battery voltage is removed

from this input, the ECM will power down.

The cause of an intermittent power supply to the ECM

can occur on either the positive side or the negative

side of the battery circuit. Both sides are routed from

the ECM to the battery. The three connections for

the unswitched +Battery s hould be routed through a

dedicated protective device (circuit breaker).

The engine ECM requires the keyswitch to be in the

ON position in order to maintain communications with

the electronic service tool.

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95

Troubleshooting Section

Schematic diagram for the electrical power supply

Connectors and the Wiring

A. Check all circuit breakers.

B. Check the battery.

C. Turn the keyswitch to the OFF position.

g01286846

Illustration 34

Left side view

(1) J1/P1 ECM connectors

(2) P61 customer connector

g01286858

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Troubleshooting Section

KENR6224

D. Thoroughly inspect connectors (1) and (2).

Inspect the connections for the battery and

the connections to the keyswitch. Refer to the

Troubleshooting Guide, “Electrical Connectors -

Inspect” for details.

Illustration 36

g01216338

Illustration 35

g01104383

J61 and P61 terminals that are associated with the electrical

power supply

(1) +Battery

(26) Keyswitch

(27) Shutdown

(31) +Battery

(32) +Battery

E. Perform a 45 N (10 lb) pull test on each of the

wires that are associated with the electrical power

supply.

F. Check the allen head screw on each ECM

P1 terminals that are assoc iated with the electrical power supply

(P1-44) Shutdown

(P1-48) +Battery

(P1-52) +Battery

(P1-53) +Battery

(P1-61) −Battery

(P1-63) −Battery

(P1-65) −Battery

(P1-70) Keys witch

connector for the proper torque. Refer to the

Troubleshooting Guide, “Electrical Connectors -

Inspect” for the correct torque values.

G. Check the harnes s and wiring for abrasions and

for pinc h points from the battery to the ECM. Also,

check the harness and wiring for abrasions and

for pinch points from the key switch to the ECM.

Expected Result:

All connectors, pins, and sockets are completely

coupled and/or inserted, and the harness and wiring

are free of corrosion, of abrasion and of pinch points.

Results:

• OK – The connectors and wiring are OK. Proceed

to Test Step 2.

This document has been printed from SPI². Not for Resale

KENR6224

97

Troubleshooting Section

•

Not OK

wiring.

– There is a fault in the connectors or

B. Load test the batteries.

Expected Result:

replace the connectors or wiring. Ensure that all of

the seals are properly in place and ensure that the

connectors are completely coupled.

STOP.

Test Step 2. Check the Battery Voltage at

the ECM

A. Disconnect the J1/P1 ECM connector.

B. Turn the keyswitch to the ON position.

C. Measure the voltage between P1-52 (Unswitched

Positive Battery) and P1-63 (Negative Battery).

D. Measure the voltage between P1-48 (Unswitched

Positive Battery) and P1-61 (Negative Battery).

E. Measure the voltage between P1-53 (Unswitched

Positive Battery) and P1-65 (Negative Battery).

F.  Measure the voltage between P1-70 (Keyswitch)

and P1-63 (Negative Battery).

Expected Result:

The meas ured voltage is between 22.0 VDC and 27.0

VDC with no suspected intermittent faults at this time.

Results:

• OK – The ECM is receiving the correct voltage.

Repair: If an intermittent condition is suspected,

refer to the Troubleshooting Guide, “Electrical

Connectors - Inspect”.

STOP.

Step 3.

•

Repair: Check the circuit protection for the

circuit and for the wiring. Trace the wiring for the

keyswitch from the ECM through the keyswitch

circuit to the batteries. Find the fault and repair the

fault.

Verify that the repairs eliminate the fault.

STOP.

Test Step 3. Check the Batteries

A. Measure the no-load battery voltage at the battery

posts.

The batteries pass the load test. The measured

voltage is the minimum specification for a 24V

system.

Results:

• OK – The batteries are OK.

Repair: Check the wiring between the batteries

and the ECM for shorts.

Check the connectors between the batteries and

the ECM for moisture and/or corrosion.

Repair the wiring and/or the connectors.

Verify that the repair eliminates the fault.

STOP.

• Not OK – The battery voltage is low or the battery

did not pass the load test.

Repair: Recharge or replace the faulty batteries.

Verify that the repair eliminates the fault.

STOP.

i02568670

Engine Pressure Sensor Open

or Short Circuit - Test

System Operation Description:

Use this procedure to troubleshoot any suspect faults

with the following sensors:

• Engine oil pressure sensor

• Inlet manifold pressure sensor

• Atmospheric pres sure sensor

This procedure covers the following diagnostic codes:

• 0100-03 Engine Oil Pressure Sensor voltage

above normal

• 0100-04 Engine Oil Pressure Sensor voltage below

normal

• 0273-03 Turbocharger Outlet Pressure Sensor

voltage above normal

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98

Troubleshooting Section

KENR6224

•

•

•

0273-04 Turbocharger Outlet Pres sure Sensor

voltage below normal

0274-03 Atmospheric Pressure Sensor voltage

above normal

0274-04 Atmospheric Pressure Sensor voltage

below normal

The troubleshooting procedures for the diagnostic

codes of each pressure sensor are identical. The

Engine Control Module (ECM) sends a 5 volt supply

to terminal 1 of each sensor. The sensor common

connection is connected to terminal 2 of each sensor.

The signal voltage from terminal 3 of each sensor is

sent to the appropriate terminal at the J2/P2 ECM

connector.

Pull-up Voltage

The ECM continuously outputs a pull-up voltage

on the circuit for the sensor signal wire. The ECM

uses this pull-up voltage in order to detect an open

in the signal circuit. When the ECM detects the

presence of a voltage that is above a threshold on the

signal circuit, the ECM will generate an open circuit

diagnostic code (03) for the sens or.

If the sensor is disconnected at the s ensor connector,

the presence of pull-up voltage at the sensor

connector indicates that the wires from the sensor

connector to the ECM are not open or shorted to

ground. If the sensor is disconnected at the sensor

connector, the absence of pull-up voltage at the

sensor connector indicates an open in the signal wire

or a short to ground. If the sensor is disconnected at

the sensor connec tor and the voltage at the sensor

connector is different from pull-up voltage, the signal

wire is shorted to another wire in the harness.

This document has been printed from SPI². Not for Resale

KENR6224

99

Troubleshooting Section

Illustration 37

Schematic for the engine pressure sensors

g01284368

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100

Troubleshooting Section

KENR6224

Sensor connector

(1) +5 VDC

(2) Common

(3) Signal

Connectors and Wiring

Electrical

g01287356

Illustration 38

P2 ECM connector

(P2-15) Signal from the inlet manifold pressure sensor

(P2-17) Sensor common

(P2-28) Signal from the oil pressure sensor

(P2-57) Atmospheric pressure sensor signal

(P2-72) +5 Volt sensor supply

g01287043

A. Turn the keyswitch to the OFF position.

B. Thoroughly inspect the J1/P1 ECM connector and

the J2/P2 ECM connector. Thoroughly inspect the

connectors for each analog sensor. Refer to the

Troubleshooting Guide, “Electrical Connectors -

Inspect” for details.

C. Perform a 45 N (10 lb) pull test on each of the

wires that are associated with the active diagnostic

code.

D. 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.

E. Check the harness and wiring for abrasions and

for pinch points from each sensor back to the

ECM.

Expected Result:

All connectors, pins, and sockets are completely

coupled and/or inserted. The harness and wiring are

free of corrosion, of abrasion, and of pinch points .

Results:

• OK – The harnes s and wiring are OK. Proceed

to Test Step 2.

• Not OK – There is a fault in the connectors and/or

wiring.

This document has been printed from SPI². Not for Resale