DDEC VI SERIES 60 TROUBLESHOOTING GUIDE
26.1 SPN 654/FMI 5
This diagnosis is typically the injector current is below normal or an open circuit fault.
26.1.1
Open Circuits with the Ignition OFF Check
Check as follows:
1. Check for multiple codes.
[a] If fault code 168/1 is active in addition to 654/5, service 168/1
fi
rst. Refer to section
12.2.
[b] If fault codes 655/5 and 656/5 are active in addition to 654/5, repair the open circuit
in the harness between pin 17, 19, 21 of the 120–pin MCM connector and terminal
and pin 1 of injectors #4, #5, and #6 connector.
[c] If only fault code 654/5 is active, go to step 2.
2. Turn the ignition switch OFF.
3. Disconnect the Injector Harness 23–pin connector.
4. Measure the resistance between pin L and pin K on the valve cover side of the connector.
[a] If the resistance is less than 3
Ω
, refer to section 26.1.2.
[b] If the resistance is greater than 3
Ω
, go to step 5.
5. Remove valve cover.
6. Disconnect injector #4 connector.
7. Measure the resistance between pin 1 of the injector connector and pin K of the injector
harness 23–pin connector.
[a] If the resistance is greater than 3
Ω
, repair the open between pin 1 of the injector
connector and pin K of the injector harness 23–pin connector. Refer to section
26.1.3.1.
[b] If the resistance is less than 3
Ω
, go to step 8.
8. Measure the resistance between pin 2 of the injector connector and pin L of the injector
harness 23–pin connector.
[a] If the resistance is greater than 3
Ω
, repair the open between pin 2 of the injector
connector and pin L of the injector harness 23–pin connector. Refer to section
26.1.3.1.
[b] If the resistance is less than 3
Ω
, refer to section 26.1.3.
All information subject to change without notice.
PRELIMINARY 6SE567 0512
Copyright © 2005 DETROIT DIESEL CORPORATION
26-3
Summary of Contents for Series 60 DDEC VI
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Page 89: ...4 SPN 84 VEHICLE SPEED SENSOR Section Page 4 1 SPN 84 FMI 3 4 3 4 2 SPN 84 FMI 4 4 4 ...
Page 93: ...5 SPN 86 ADAPTIVE CRUISE CONTROL FAULT Section Page 5 1 SPN 86 FMI 14 5 3 ...
Page 201: ...21 SPN 625 CAN FAULT Section Page 21 1 SPN 625 FMI 2 9 10 13 14 21 3 21 2 SPN 625 FMI 4 21 5 ...