Self-Diagnostic System
WARNING:
This test is Key On Engine Off (KOEO) test only. Ensure gear selector is in park, and parking brake is fully engaged.
NOTE:
Manufacturer specifies ignition switch position during testing, although it may not affect power distribution.
- Hold speed control OFF button, turn ignition on. CRUISE indicator on instrument cluster should flash once to indicate successful entry into self-diagnostic mode. If CRUISE indicator does not flash, repeat step 1) . If CRUISE indicator still does not flash, repair system by symptom. See SYMPTOM INDEX table under SYSTEM TESTS. If CRUISE indicator flashes once followed by 5 additional flashes, replace cruise control servo/actuator.
- Release speed control OFF button. Within 5 seconds of entering self-diagnostics, press speed control ON button. Press remaining speed control buttons in the following sequence; ON, RES, COAST and SET/ACCEL. As each button is pressed, CRUISE indicator will flash. Wait until indicator light goes out to press next button.
- After sequence has been completed, indicator light will flash to indicate test passed or failed. See FLASH CODES table and perform appropriate test.
- Immediately after static test has passed, actuator performs a dynamic test by automatically operating throttle .04-.40" (1-10 mm). Observe throttle movement to witness any sticking of cable or linkage. Ensure throttle returns properly. Turn ignition switch to LOCK position. If self-diagnostics does not pinpoint fault, repair by symptom. See SYMPTOM INDEX table under SYSTEM TESTS.
FLASH CODES
| Flash Code | Perform Test | |||||
|---|---|---|---|---|---|---|
| Flash Code 1 | ||||||
| (With Throttle Pull) | Test Passed | |||||
| (No Throttle Pull At Throttle Body) | (1) | |||||
| (No Throttle Pull At Servo/Actuator) | A | |||||
| (Speed Control Inoperative) | D | |||||
| Flash Code 2 (Brake Pedal Position (BPP) Switch Circuit) | B | |||||
| Flash Code 3 (Deactivator Switch Circuit) | C | |||||
| Flash Code 5 (Servo/Actuator) | (2) | |||||
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