DDEC VI SERIES 60 TROUBLESHOOTING GUIDE
31.1 SPN 706/FMI 3
This fault code indicates that there is a short to power.
31.1.1
Short to Power Check
Check as follows:
1. Turn the ignition OFF.
2. Disconnect the injector harness 23–pin connector.
3. Measure the resistance between pin A and pin B on the valve cover side of the connector.
[a] If the resistance is less than 5
Ω
, repair the short in the harness on the valve cover
side between circuits 36 and 91 on pins A and B. Refer to section 31.1.2.1.
[b] If the resistance is greater than 9
Ω
, go to step 4.
4. Turn the ignition ON (key ON, engine OFF).
5. Measure the voltage between pin B and ground on the engine side of the connector.
[a] If the voltage is greater than 11.5 volts, repair the short to power between pin B and
pin 36 of the MCM. Refer to section 31.1.2.1.
[b] If the voltage is less than 11.5 volts, refer to section 31.1.2.
31.1.2
Resistance and Voltage Check
The resistance and voltage check performed indicate that you should not be getting a code. The
following is a recheck before requesting a new MCM.
1. Reconnect all connectors.
2. Turn ignition ON. Clear codes with diagnostic tool.
3. Start and run the engine for one minute. Stop engine.
4. Turn the ignition OFF.
5. Disconnect the injector harness 23–pin connector.
6. Measure the resistance between pin A and pin Bon the valve cover side of the connector.
[a] If the resistance is less than 5
Ω
, repair the short in the harness on the valve cover
side between circuits 36 and 91 on pins A and B. Refer to section 31.1.2.1.
[b] If the resistance is greater than 9
Ω
, go to step 7.
7. Turn the ignition ON (key ON, engine OFF).
8. Measure the voltage between pin B and ground on the engine side of the connector.
[a] If the voltage is greater than 11.5 volts, repair the short to power between pin B and
pin 36 of the MCM. Refer to section 31.1.2.1.
All information subject to change without notice.
PRELIMINARY 6SE567 0512
Copyright © 2005 DETROIT DIESEL CORPORATION
31-3
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 ...