DTC B1483, B1484, B1486 [DYNAMIC STABILITY CONTROL]


id040220874700

Caution
• When attaching the tester lead to the DSC HU/CM connector the SST (49 G066 004) must be used.

DTC

B1483, B1484, B1486

Brake switch signal

DETECTION CONDITION

• Low voltage is detected at the voltage monitor of solenoid valve monitor, or the motor monitor

POSSIBLE CAUSE

• B1483
- Malfunction of brake switch
• B1484
- Open circuit in harness between DSC HU/CM terminal L and brake switch
• B1486
- Short to ground circuit in harness between DSC HU/CM terminal L and brake switch
• Short to power circuit in harness between DSC HU/CM terminal L and brake switch

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT DSC HU/CM TO BRAKE SWITCH FOR OPEN CIRCUIT
• Turn ignition key to OFF.
• Disconnect DSC HU/CM and brake switch connector
• Inspect continuity DSC HU/CM terminal L and brake switch
• Is there continuity?
Yes
Go to next step.
No
Repair or replace harness for open circuit between DSC HU/CM and brake switch, then go to next step.
2
INSPECT DSC HU/CM TO BRAKE SWITCH FOR SHORT TO GROUND
• Turn ignition key to OFF.
• Inspect continuity DSC HU/CM terminal L and ground
• Is there continuity?
Yes
Repair or replace harness for open circuit between DSC HU/CM and brake switch, then go to next step.
No
Go to next step.
3
INSPECT BRAKE SWITCH
• Inspect bake switch.
• Is it okay?
Yes
Go to next step.
No
Replace bake switch, then go to next step.
4
VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from memory.
• Is same DTC present?
Yes
Replace bake switch, then go to next step.
No
Go to next step.
5
VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
Yes
Go to applicable DTC inspection.
No
Troubleshooting completed.