DTC B1026: Passenger's door lock switch malfunction
| DTC Description | DTC |
|---|---|
| B1026 Passenger's door lock switch malfunction |
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC ChecksBody Electrical Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (without the HDS)Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode B - Control Unit Not CommunicatingBody Electrical Troubleshooting - B-CAN System Diagnosis Test Mode C - No DTCs and Output Won't Shut OFFBody Electrical Troubleshooting - B-CAN System Diagnosis Test Mode D - No DTCs and Output Won't Turn ON .
- 1. Problem verification (passenger's door lock switch in the neutral position):
1. Check the parameter(s) below with the HDS.
Signal Current conditions Value Unit Front Passenger's Door Lock Sw.(LOCK) Signal Current conditions Value Unit Front Passenger's Door Lock Sw.(UNLOCK) Is either information indicator ON?
YES
Go to step 4.
NO
Go to step 2.
- 2. Problem verification (passenger's door lock switch in the lock position):
1. With the front passenger's door lock switch in the lock position, check the parameter(s) below with the HDS.
Signal Current conditions Value Unit Front Passenger's Door Lock Sw.(LOCK) Front Passenger's Door Lock Sw.(UNLOCK) Are both information indicator ON?
YES
Go to step 3.
NO
Intermittent failure, the system is OK at this time.
- 3. Shorted wire check (AS REMOTE SW LOCK to AS REMOTE SW UNLOCK line):
1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the following connector.
Front passenger's power window switch 10P connector 3. Connect terminals A and B with a jumper wire.
Terminal A Front passenger's power window switch 10P connector No. 3 Terminal B Body ground 4. Check the parameter(s) below with the HDS.
Signal Current conditions Value Unit Front Passenger's Door Lock Sw.(LOCK) Signal Current conditions Value Unit Front Passenger's Door Lock Sw.(UNLOCK) Are both information indicators ON?
YES
Repair a short between the wires.
NO
The AS REMOTE SW LOCK to AS REMOTE SW UNLOCK wire is OK. Faulty door lock switch; replace the front passenger's power window switch - Refer to: Rear Power Window Switch Removal and InstallationFront Passenger's Power Window Switch Removal and Installation .
- 4. Passenger's door lock switch check:
1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the following connector.
Front passenger's power window switch 10P connector 3. Check the parameter(s) below with the HDS.
Signal Current conditions Value Unit Front Passenger's Door Lock Sw.(LOCK) Front Passenger's Door Lock Sw.(UNLOCK) Is either information indicator ON?
YES
Go to step 5.
NO
Faulty door lock switch; replace the front passenger's power window switch - Refer to: Rear Power Window Switch Removal and InstallationFront Passenger's Power Window Switch Removal and Installation .
- 5. Shorted wire check (AS REMOTE SW LOCK, AS REMOTE SW UNLOCK lines):
1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the following connector.
Under-dash fuse/relay box connector W (24P) 3. Check for continuity between test points 1 and 2 individually.
Test condition Vehicle OFF (LOCK) mode Front passenger's power window switch 10P connector: disconnected
Under-dash fuse/relay box connector W (24P): disconnected
Test point 1 Under-dash fuse/relay box connector W (24P) No. 7 Test point 2 Body ground Test point 1 Under-dash fuse/relay box connector W (24P) No. 8 Test point 2 Body ground Are there continuity?
YES
Repair a short to ground in the wire.
NO
The AS REMOTE SW LOCK and AS REMOTE SW UNLOCK wires are OK. Faulty MICU; replace the under-dash fuse/relay box .
