1. Clear the DTCs with the HDS.
2. Lock and unlock the driver's door with the driver's door lock switch.
3. Check for DTCs with the HDS.
Is DTC B2180 indicated?
YES -
Go to step 4.
NO -
Intermittent failure, the system is OK at this time. Check for loose or poor connections between the driver's MPCS unit and the driver's door lock
switch.?
4. With the driver's door lock switch in the neutral position, select the DOOR LOCK from the BODY ELECTRICAL SYSTEM SELECT
menu, and enter the DATA LIST.
5. Check the ON/OFF Information of the Driver's Door Lock Switch (LOCK) and Driver's Door Lock Switch (UNLOCK).
Are both information indicators OFF?
YES -
Go to step 6.
NO -
Go to step 7.
6. Operate the driver's door lock switch in the LOCK and UNLOCK positions, and check the ON/OFF information of the Driver's Door Lock
Switch (LOCK) and Driver's Door LOCK Switch (UNLOCK).
Are both Driver's Door LOCK Switch (LOCK) and Driver's Door LOCK Switch (UNLOCK) information indicators ON at the same time when the
door lock switch is in the LOCK or UNLOCK position?
YES -
Do the door lock switch test See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Testing and
Inspection/Component Tests and General Diagnostics/Power Door Lock Switch Test. If the switch is OK, repair a short between the wires.?
NO -
Replace the driver's MPCS unit.?
7. Disconnect the driver's door lock switch 5P connector.
8. Check the ON/OFF information of the Driver's Door Lock Switch (LOCK) and Driver's Door Lock Switch (UNLOCK).
Are both information indicators OFF?
YES -
Faulty driver's door lock switch.?
NO -
Go to step 9.
9. Disconnect driver's MPCS unit connector A (40P).
10. Check for continuity between body ground and driver's door lock switch 5P connector terminals No. 3 and No. 4 individually.
