What to check for --No Cruise Control?
#1
11-08-2008, 11:42 PM
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What to check for --No Cruise Control?
I've recently discovered that my CC doesn't work all of a sudden after four years. I've checked all fuses under steering column and couldn't find anything blown. While driving @ highway speed and pressing the ON button, the green CC light no longer lights. What should I check next? Pressing any buttons on the steering wheel related to CC while driving do nothing either.
#3
11-09-2008, 06:39 AM
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Check fuses F27 & F34.
Pull connector to the speed control module and inspect it for purned or corroded pins.
Check the deactivator switch and the add-on harness fuse (if applicable for your truck) for continuity.
Attempt to run the VSC Self-Diagnostic as follows:
Report your results.
Steve
Pull connector to the speed control module and inspect it for purned or corroded pins.
Check the deactivator switch and the add-on harness fuse (if applicable for your truck) for continuity.
Attempt to run the VSC Self-Diagnostic as follows:
Self-Test Diagnostics
WARNING: This test is a key on engine off (KOEO) test only that is conducted in PARK only with the emergency brake fully engaged.
Enter the Self-Test Diagnostics by depressing the speed control OFF switch while turning the ignition key ON, making sure the engine does not start and is not running. The speed control indicator on the instrument panel will flash once to indicate that speed control module entered the diagnostic mode. Five additional flashes at this point indicate a defective speed control servo. Release the OFF switch.
Press the remaining switches in this sequence: ON, RESUME, COAST and SET/ACCEL.
If the "ON" switch is not depressed within five seconds after entering the diagnostic mode, the module times out and the procedure must be started over.
The speed control indicator lamp will flash as each switch is depressed. Press each switch in the sequence immediately after the indicator light goes out for the previous switch.
NOTE: There will be a slight delay when the last button is pressed and the lamp flashes.
A lamp flash with the last button (SET/ACCEL) indicates that the STATIC test passed. If the lamp does not flash with the last button and there are no additional flashes of the lamp, the switch is defective.
If the lamp does not flash with the last button, and additional flashes occur, follow the chart below for trouble codes:
WARNING: This test is a key on engine off (KOEO) test only that is conducted in PARK only with the emergency brake fully engaged.
Enter the Self-Test Diagnostics by depressing the speed control OFF switch while turning the ignition key ON, making sure the engine does not start and is not running. The speed control indicator on the instrument panel will flash once to indicate that speed control module entered the diagnostic mode. Five additional flashes at this point indicate a defective speed control servo. Release the OFF switch.
Press the remaining switches in this sequence: ON, RESUME, COAST and SET/ACCEL.
If the "ON" switch is not depressed within five seconds after entering the diagnostic mode, the module times out and the procedure must be started over.
The speed control indicator lamp will flash as each switch is depressed. Press each switch in the sequence immediately after the indicator light goes out for the previous switch.
NOTE: There will be a slight delay when the last button is pressed and the lamp flashes.
A lamp flash with the last button (SET/ACCEL) indicates that the STATIC test passed. If the lamp does not flash with the last button and there are no additional flashes of the lamp, the switch is defective.
If the lamp does not flash with the last button, and additional flashes occur, follow the chart below for trouble codes:
Steve
#4
11-09-2008, 01:25 PM
#5
11-09-2008, 03:37 PM
Thats what it was on mine, I knocked the wire off the sensor while installing my WW, plugged it back in, and I was off again.
#6
11-10-2008, 06:16 PM
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Check fuses F27 & F34.
Pull connector to the speed control module and inspect it for purned or corroded pins.
Check the deactivator switch and the add-on harness fuse (if applicable for your truck) for continuity.
Attempt to run the VSC Self-Diagnostic as follows:
Report your results.
Steve
Pull connector to the speed control module and inspect it for purned or corroded pins.
Check the deactivator switch and the add-on harness fuse (if applicable for your truck) for continuity.
Attempt to run the VSC Self-Diagnostic as follows:
Report your results.
Steve
#7
11-10-2008, 08:45 PM
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Project, here's the results:
F27 and F34 check out good.
Self test diag as follows:
1. Holding "off" button and key to on = 1 green light (gl) flash
2. Press "on" = 1 flash gl
3. Press "resume" = 1 flash gl
4. Press "coast" = 1 flash gl
5. Press "set/accl" = NO flash gl
6. Three green light flashes follow
I didn't know where to look for the speed control module. I looked at the 5 pronged connector attached half way up the brake pedal and everything looks clean and not burned. Not sure where the deactivator switch is (assume this is the latter). And I don't know if I have the add-on harness fuse. Hope this helps further a diagnosis.
F27 and F34 check out good.
Self test diag as follows:
1. Holding "off" button and key to on = 1 green light (gl) flash
2. Press "on" = 1 flash gl
3. Press "resume" = 1 flash gl
4. Press "coast" = 1 flash gl
5. Press "set/accl" = NO flash gl
6. Three green light flashes follow
I didn't know where to look for the speed control module. I looked at the 5 pronged connector attached half way up the brake pedal and everything looks clean and not burned. Not sure where the deactivator switch is (assume this is the latter). And I don't know if I have the add-on harness fuse. Hope this helps further a diagnosis.
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#9
11-11-2008, 02:20 PM
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Thanks BJ.
#10
11-11-2008, 08:59 PM
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