Power Door Lock Test 4A - One Or All Doors Fail To Lock From One Switch
NOTE:
Perform POWER DOOR LOCK TEST 1A
before proceeding with this test. For connector terminal identification, refer to CONNECTOR IDENTIFICATION
. For wiring diagrams, refer to WIRING DIAGRAMS
. Perform, after each repair, VERIFICATION TEST VER-1A - VERIFICATION PROCEDURE
.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
- Using scan tool, read I/O's door lock switch status. If scan tool does not display LOCK SW PRESSED while lock switch is pressed on inoperative door, go to step 6). If scan tool displays LOCK SW PRESSED while lock switch is pressed on inoperative door, go to next step.
- Access door lock actuator inside inoperative door. Disconnect door lock actuator connector. Remove key from ignition and roll windows down. Connect test light between door lock actuator connector terminals.
- If test light illuminates while door lock switch is pressed, replace door lock actuator. If test light does not illuminate while door lock switch is pressed, go to next step.
- Connect test light to ground and probe Orange/Black wire of door lock actuator connector. If test light illuminates while door lock switch is pressed, repair open Orange/Black wire between door lock actuator and Central Timer Module (CTM). CTM is located behind right kick panel. If test light does not illuminate while door lock switch is pressed, go to next step.
- Access CTM 18-pin connector "B". Remove connector cover. Do not disconnect connector. Using an external voltmeter, measure voltage between ground and CTM 18-pin connector "B" terminal No. 1 (Orange/Black wire). If voltage is more than 9.5 volts while door lock switch is pressed, repair open Orange/Black wire. If voltage is 9.5 volts or less while door lock switch is pressed, replace CTM.
- Disconnect inoperative lock switch connector. Using an external voltmeter, measure voltage between ground and Red wire of door lock switch connector. If voltage is more than 9.5 volts, repair open Red wire between door lock switch connector and voltage source. If voltage is 9.5 volts or less, go to next step.
- Reconnect door lock switch connector. Measure voltage between ground and backprobe Orange/Violet wire of door lock switch connector. If voltage is more than 9.5 volts, go to next step. If voltage is 9.5 volts or less, replace door lock switch.
- Access CTM 18-pin connector "B". Remove connector cover. Do not disconnect connector. Using an external voltmeter, measure voltage between ground and CTM 18-pin connector "B" terminal No. 4 (Orange/Violet wire). If voltage is more than 9.5 volts, replace CTM. If voltage is 9.5 volts or less, repair open Orange/Violet wire between CTM and door lock switch.