Grand Caravan L4-153 2.5L SOHC VIN K TBI (1988)
Cruise Control Servo: Testing and Inspection
Fig. 72 Servo Harness Connector
1. Turn ignition switch and speed control switch to the On position.
2. Set voltmeter to read battery voltage. Connect negative lead to chassis ground.
3. Disconnect the 4-way connector to the servo. Pin 2 should read approximately battery voltage. If not, check for loose connections or repair main
harness as necessary.
4. Connect a jumper wire between pin 2 of the 4-way connector and pin 2 of the speed control servo. The other three male terminals from the servo
should show battery voltage.
5. Using an ohmmeter, connect one lead to ground, then touch the other lead to pin 1 of the 4-way connector of the main harness. The meter should
indicate continuity. If not, repair ground circuit.
