P1683

Test 1 - 4:

Test 5 - 9:

Test 10 - 13:

SYMPTOM
P1683-SPD CTRL PWR RELAY; OR S/C 12 V DRIVER CKT

TEST NOTE
This symptom is diagnosed using the tests P1595-SPEED CONTROL SOLENOID CIRCUITS.

WHEN MONITORED
With the ignition key on and the speed control switched on.

SET CONDITION
The speed control power supply circuit is either open or shorted to ground.

POSSIBLE CAUSES
- (Z10) ground circuit open
- Intermittent condition
- Speed control servo
- (V30) S/C brake switch output circuit open
- Brake lamp switch
- (V32) S/C power supply circuit open
- S/C vacuum solenoid
- (V36) S/C vacuum sol control circuit open
- (V36) S/C vacuum sol control circuit shorted to ground
- S/C vent solenoid
- (V35) S/C vent sol control circuit open
- (V35) S/C vent sol control circuit shorted to ground
- PCM