Convertible Top: 9870

9870 TRUNK LATCH ACTUATOR LOCK CONTROL CIRCUIT SHORT TO GROUND

9870 Trunk Latch Actuator Lock Control Circuit Short To Ground:

WHEN MONITORED
Continuously, with the ignition on.

SET CONDITION
When the Power Top Control Module (PTCM) senses high current flow on the Trunk Latch Actuator Unlock Control circuit.

POSSIBLE CAUSES
- Trunk latch actuator lock control circuit short to ground
- Trunk latch assembly
- Power top control module

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

DIAGNOSTIC TEST

1. Trunk Latch Assembly




Turn the ignition on.
Disconnect the Trunk Latch Assembly C2 harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Using a 12-volt test light connected to between the Trunk Latch Actuator Lock Control circuit and the Trunk Latch Actuator Unlock Control circuit at the Trunk Latch Assembly C2 harness connector.
With the DRB III(R), select Actuator Test and actuate the TRUNK LATCH ACT LOCK.

Q: Does the test light illuminate brightly when actuated?

YES: Replace the Trunk Latch Assembly. Perform POWER TOP CONTROL MODULE VERIFICATION TEST. Power Top Verification Test
NO: Go To 2

2. Trunk Latch Actuator Lock Control Circuit For Short To Ground




Turn the ignition off.
Disconnect the Power Top Control Module C1 harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between ground and the Trunk Latch Actuator Lock Control circuit.

Q: Is the resistance below 100 kohms?

YES: Repair the Trunk Latch Actuator Lock Control circuit for a short to ground. Perform POWER TOP CONTROL MODULE VERIFICATION TEST. Power Top Verification Test
NO: Replace the Power Top Control Module. Perform POWER TOP CONTROL MODULE VERIFICATION TEST. Power Top Verification Test