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DTC Troubleshooting: B1129
DTC B1129: Driver's Door Lock Knob Switch Malfunction
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DTC Description |
DTC |
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B1129 Driver's Door Lock Knob Switch Malfunction |
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1. |
Problem verification:
Problem verification
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?1. |
Clear the DTCs with the HDS.
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?2. |
Operate the driver's door lock knob switch several times. |
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?3. |
Check for DTCs with the HDS.
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DTC Description |
DTC |
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B1129 Driver's door lock knob switch malfunction |
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Is DTC B1129 indicated?
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Intermittent failure, the system is OK at this time.? |
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2. |
Determine possible failure area (DR SILCON UNLOCK, DR SILCON LOCK lines):
Determine possible failure area (DR SILCON UNLOCK, DR SILCON LOCK lines)
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?1. |
With the driver's door lock knob switch in the lock position, check the parameter(s) below with the HDS.
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Signal |
Current conditions |
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Values |
Unit |
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Driver's Door Lock Knob Switch(UNLOCK) |
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Is the DRIVER'S DOOR LOCK KNOB SWITCH (UNLOCK) information indicator ON?
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3. |
Shorted wire check (DR SILCON LOCK line):
Shorted wire check (DR SILCON LOCK line)
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?1. |
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode. |
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?2. |
Disconnect the following connectors.
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?3. |
Check for continuity between test points 1 and 2.
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Test condition |
IG LOCK (0) or OFF mode
Driver's door latch 10P connector
Power window master switch 37P connector |
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Test circuit |
DR SILCON LOCK |
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Test point 1 |
Power window master switch 37P connector No. 33 (BLU) |
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Test point 2 |
Body ground | |
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Is there continuity?
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Repair a short to ground in the wire.? |
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The DR SILCON LOCK wire is not shorted to ground. Go to step 4. |
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4. |
Shorted wire check (DR SILCON UNLOCK line to DR SILCON LOCK line):
Shorted wire check (DR SILCON UNLOCK line to DR SILCON LOCK line)
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?1. |
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode. |
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?2. |
Check for continuity between test points 1 and 2.
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Test condition |
IG LOCK (0) or OFF mode
Driver's door latch 10P connector
Power window master switch 37P connector |
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Test circuit |
DR SILCON UNLOCK, DR SILCON LOCK |
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Test point 1 |
Power window master switch 37P connector No. 32 (LT BLU) |
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Test point 2 |
Power window master switch 37P connector No. 33 (BLU) | |
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Is there continuity?
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Repair a short in DR SILCON UNLOCK wire to DR SILCON LOCK wire.? |
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5. |
Shorted wire check (DR SILCON UNLOCK line):
Shorted wire check (DR SILCON UNLOCK line)
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?1. |
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode. |
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?2. |
Disconnect the following connectors.
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?3. |
Check for continuity between test points 1 and 2.
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Test condition |
IG LOCK (0) or OFF mode
Driver's door latch 10P connector
Power window master switch 37P connector |
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Test circuit |
DR SILCON UNLOCK |
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Test point 1 |
Power window master switch 37P connector No. 32 (LT BLU) |
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Test point 2 |
Body ground | |
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Is there continuity?
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Repair a short to ground in the wire.? |
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The DR SILCON UNLOCK wire is not shorted to ground. Go to step 6. |
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6. |
Shorted wire check (DR SILCON UNLOCK line to DR SILCON LOCK line):
Shorted wire check (DR SILCON UNLOCK line to DR SILCON LOCK line)
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?1. |
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode. |
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?2. |
Check for continuity between test points 1 and 2.
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Test condition |
IG LOCK (0) or OFF mode
Driver's door latch 10P connector
Power window master switch 37P connector |
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Test circuit |
DR SILCON UNLOCK, DR SILCON LOCK |
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Test point 1 |
Power window master switch 37P connector No. 32 (LT BLU) |
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Test point 2 |
Power window master switch 37P connector No. 33 (BLU) | |
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Is there continuity?
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Repair a short in DR SILCON UNLOCK wire to DR SILCON LOCK wire.? |
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