Power Door Lock Test 27A - Remote Keyless Entry Problem
NOTE:
Perform POWER DOOR LOCK TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see appropriate sections in this article. Perform VERIFICATION TEST VER-1A after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
NOTE:
After repairing Remote Keyless Entry (RKE) system, transmitters may have to be reprogrammed. See appropriate KEYLESS ENTRY SYSTEM - REMOTE
article.
- Access RKE module under instrument panel cover. See Fig 1 . Turn ignition off. Disconnect RKE module connector. Using scan tool in voltmeter mode, measure voltage on connector, terminal No. 3 (Pink wire). If voltage is 10 volts or less, repair open Pink wire. If voltage is more than 10 volts, go to next step.
- Using scan tool in ohmmeter mode, measure resistance on RKE module connector, terminal No. 5 (Gray/Black wire). Grounding of circuit will cause RKE system to be inoperative. If resistance is less than 100 ohms, repair Gray/Black wire for short to ground. If resistance is 100 ohms or greater, go to next step.
- Using scan tool in ohmmeter mode, measure resistance on RKE module connector, terminal No. 4 (Black/Light Green wire). If resistance is 5 ohms or greater, repair open Black/Light Green wire. If resistance is less than 5 ohms, go to next step.
- Ensure gear shift selector is in Park. Using scan tool in voltmeter mode, measure voltage on RKE module connector, terminal No. 6 (Light Green/Red wire). If voltage is more than 4 volts, go to POWER DOOR LOCK TEST 27B. If voltage is 4 volts or less, go to next step.
- Connect jumper wire between chassis ground and RKE module connector, terminal No. 6 (Light Green/Red wire). Disconnect Body Control Module (BCM) "A" connector. BCM is located with junction block. See Figure in CHIME TEST 2A. Using scan tool in ohmmeter mode, measure resistance on "A" connector, terminal No. 1 (Light Green/Red wire). If resistance is 5 ohms or greater, repair open Light Green/Red wire. If resistance is less than 5 ohms, go to next step.
- Remove jumper wire. Using scan tool in ohmmeter mode, measure resistance on "A" connector, terminal No. 1 (Light Green/Red wire). If resistance is 100 ohms or greater, replace BCM. If resistance is less than 100 ohms, repair Light Green/Red wire for short to ground.