DDEC VI SERIES 60 TROUBLESHOOTING GUIDE
19.1 SPN 601/FMI 12
This diagnosis is typically both Cruise Control switches, SET and RES, are shorted to ground.
19.1.1
Short to Ground Check
Check as follows:
1. Turn the ignition ON (key ON, engine OFF) and place the Cruise Control Switch in the
OFF position. DO NOT start the engine.
2. Check the driver console display.
[a] If Cruise Control switch status RES is displayed, go to step 3.
[b] If Cruise Control switch status SET is displayed, go to step 4.
3. Unplug the RES Cruise Control Switch.
[a] If RES status is no longer displayed, replace the Cruise Control RES Switch.
Refer to section 19.1.1.1.
[b] If RES status is still displayed, repair the short to ground in the wire from the RES
switch to pin 16 of the CPC #1 connector. Refer to section 19.1.1.1.
4. Unplug the SET Cruise Control Switch.
[a] If SET status is no longer displayed, replace the Cruise Control SET Switch.
Refer to section 19.1.1.1.
[b] If SET status is still displayed, repair the short to ground in the wire from the SET
switch to pin 12 of the CPC #1 connector. Refer to section 19.1.1.1.
19.1.1.1
Verify Repairs
Verify repairs as follows:
1. Turn the ignition OFF and reconnect all connectors.
2. Turn the ignition ON. Clear the codes.
3. Start and run the engine for eight minutes. Stop the engine.
4. Check for codes.
[a] If no codes are logged, troubleshooting is complete.
[b] If other codes are logged, review this section to
fi
nd the error. If no error is found,
contact Detroit Diesel Customer Support Center (313–592–5800).
All information subject to change without notice.
PRELIMINARY 6SE567 0512
Copyright © 2005 DETROIT DIESEL CORPORATION
19-3
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 ...