Checking Speed Control Operation With No DTC's Present

Test 1:

Tests 2 - 7:

Tests 8 - 13:

Tests 14 - 18:

Tests 19 - 23:

Tests 24 - 28:

Tests 29 - 34:

Tests 35 - 40:

Tests 41 - 42:

SYMPTOM
CHECKING SPEED CONTROL OPERATION WITH NO DTC'S PRESENT

POSSIBLE CAUSES
- Ground circuit at S/C servo connector open
- Ground circuit to S/C RESUME/ACCEL switch connector open
- S/C switch signal circuit to clockspring connector open
- Speed control switch ground circuit open clockspring to S/C switch
- Speed control switch ground circuit open PCM to clockspring
- Clockspring shorted to ground
- DRB does not show set switch "PRESSED" or released
- S/C wiring harness observable problem
- Cancel switch
- Coast switch
- Throttle cable observable problem
- Throttle opens and closes
- S/C switch (ON/OFF)
- S/C switch (RESUME/ACCEL)
- S/C signal circuit shorted to sensor ground
- S/C switch signal circuit shorted to ground
- Speed control ON/OFF switch
- Speed control ON/OFF switch stuck
- Speed control RESUME/ACCEL switch
- Speed control RESUME/ACCEL switch stuck
- Speed control switch signal circuit open PCM to clockspring
- Speed control switch signal circuit open clockspring to S/C switch
- Speed control switch signal circuit shorted to voltage
- PCM
- Powertrain control module