Cruise Command System Tests

Testing of cruise control switch is performed with an ohmmeter. See Fig 1 . Testing of cruise control system is performed with Cruise Command System Tester (AM PC-1-R). Remove harness connector from control module. Connect tester to harness connector. Perform tests as part of service diagnosis to determine cause and correction of system malfunction. Various tester lights are associated with specific components, circuits, etc. See tables below.

Fig 1: Testing Cruise Control Switch

Courtesy of CHRYSLER MOTORS.

Fig 2: Cruise Control Wiring Schematic For All Except Grand Wagoneer

Courtesy of CHRYSLER MOTORS.

Fig 3: Cruise Control Wiring Schematic For Grand Wagoneer

Courtesy of CHRYSLER MOTORS.

MINIMUM OPERATION REQUIRED TO TURN ON LAMP

Condition	Lamp On	Perform Test
Cruise switch on, set switch depressed	1	2
Cruise switch on	2	3
Ign. switch on, depress brake to turn off	3, 4	4, 5
Ign. switch on, depress clutch to turn off	3, 4	4, 5
Cruise switch resume/accelerate	5, 6	6

SERVO CHECKS

Condition

Lamp On

Perform Test

⁽¹⁾

5, 6

7A, 7B

⁽¹⁾	Cruise switch resume/accelerate engine running. Parking brake fully engaged; automatic transmission in Park; manual transmission in Neutral.