Diagnosis Procedure
Regarding Wiring Diagram information, refer to POWER WINDOW SYSTEM: WIRING DIAGRAM [KING CAB]
.
DIAGNOSIS PROCEDURE
| Step |
Action |
YES |
NO |
| 1 |
CHECK DOOR SWITCHES INPUT SIGNAL
With SDT
Check door switches ("DOOR SW-DR", "DOOR SW-AS") in Data list mode with SDT. Refer to
[SDT FUNCTION (BCM - DOOR LOCK)
]
- When any doors are open:
DOOR SW-DR: ON
DOOR SW-AS: ON
- When any doors are closed:
DOOR SW-DR: OFF
DOOR SW-AS: OFF
Without SDT
Check voltage between BCM connector M18 or M19 terminals 12, 47 and ground.
Is the inspection result normal? |
Door switch circuit is OK. |
GO TO 2 |
| 2 |
CHECK DOOR SWITCH CIRCUIT
- Turn ignition switch OFF.
- Disconnect BCM.
- Check continuity between front door switch connector D213 (LH), D314 (RH) terminal 2 and BCM connector M18, M19 terminals 12 and 47.
2 - 47: Continuity should exist
2 - 12: Continuity should exist
- Check continuity between rear door switch upper connector D211 (LH), D312 (RH) terminal 1 and BCM connector M18, M19 terminals 12 and 47.
1 - 47: Continuity should exist
1 - 12: Continuity should exist
- Check continuity between rear door switch lower connector D212 (LH), D313 (RH) terminal 1 and BCM connector M18, M19 terminals 12 and 47.
1 - 47: Continuity should exist
1 - 12: Continuity should exist
- Check continuity between front door switch connector D213 (LH), D314 (RH) terminal 2 and ground.
2 - Ground: Continuity should exist
- Check continuity between rear door switch upper connector D211 (LH), D312 (RH) terminal 1 and ground.
1 - Ground: Continuity should not exist
- Check continuity between rear door switch lower connector D212 (LH), D313 (RH) terminal 1 and ground.
1 - Ground: Continuity should not exist
Is the inspection result normal? |
GO TO 3 |
Repair or replace harness. |
| 3 |
CHECK DOOR SWITCHES GROUND CIRCUIT
- Check continuity between front door switch connector D213 (LH), D314 (RH) terminal 3 and ground.
3 - Ground: Continuity should not exist
- Check continuity between rear door switch upper connector D211 (LH), D312 (RH) terminal 2 and ground.
2 - Ground: Continuity should not exist
- Check continuity between rear door switch lower connector D212 (LH), D313 (RH) terminal 2 and ground.
2 - Ground: Continuity should not exist
Is the inspection result normal? |
GO TO 4 |
Repair or replace harness. |
| 4 |
CHECK DOOR SWITCHES
Check continuity between door switch terminals.
Is the inspection result normal? |
Replace BCM. Refer to [BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION
] |
Replace door switch. |