DOOR LOCK AND POWER WINDOWS — TROUBLE DIAGNOSIS — Diagnostic Procedure 5 (Cont'd) — Without Power Windows
BF-24flowchartDP5 has two parallel branches: BF-22/BF-23 covers models with power windows (master-switch routes lock/unlock through 12-pin connector D6/D7); this BF-24 branch covers models without power windows where a separate DOOR LOCK TIMER (M44) handles the central-lock logic.
Diagnostic Procedure 5 (Cont'd) — without Power Windows
NOTE
SYMPTOM: One or more door locks will not operate. (For models without Power Windows)
Diagnostic Procedure 5 — door locks without power windows
1
CHECK THE OPERATION OF THE CENTRAL DOOR LOCK AT THE DRIVER SIDE BY USING EITHER THE DRIVER SIDE MAIN CONTROL SWITCH OR THE KEY-SWITCH.
N.G.
Confirm that failure is not caused by:
Confirm that failure is not caused by:
- Disconnected rod(s) at lock assembly and/or bell crank.
- Disconnected/loose connector at driver's side lock knob switch.
O.K.
2
Check fusible links and circuit breaker (refer to relevant wiring diagram).
N.G.
Identify cause of fault and/or replace 'blown' fuse link.
O.K.
3
A — CHECK DOOR LOCK TIMER GROUND CIRCUIT.
1) Turn off ignition switch.
2) Disconnect 8-pin connector (M44) from door lock timer.
3) Check continuity between terminal and body ground. CONTINUITY SHOULD EXIST.
N.G.
Repair harness and/or ensure good body ground connection.
O.K.
4
B — CHECK DRIVER SIDE DOOR LOCK KNOB GROUND CIRCUIT.
1) Turn off ignition switch.
2) Disconnect door lock knob connector (D8).
3) Check continuity between terminal (2) and body ground. CONTINUITY SHOULD EXIST.
N.G.
Repair harness and/or body ground connection.
O.K.
5
C — CHECK DOOR LOCK TIMER POWER SUPPLY.
1) Connect door lock timer connector (M44) to timer unit.
2) Check voltage between terminal (3) and body ground.
N.G.
Repair harness between circuit breaker and door lock timer unit.
O.K.
A — continues on BF-25
Test C — door-lock-timer power supply at M44 terminal 3
3
Terminal (−)GND
ConnectorM44
VoltageApprox. 12V