|
DTC Advanced Diagnostics: C0023-14
DTC C0023-14: Brake Diag Circuit OFF Failure
NOTE
|
|
Initial Diagnosis:
The initial on-board diagnosis occurs right after the vehicle condition is turned to the ON mode, and the ABS/VSA indicator comes on, and continues until the indicator goes off. |
|
|
Regular Diagnosis:
The regular on-board diagnosis begins right after the ABS/VSA indicator goes off, and it continues until the vehicle condition is turned to the OFF (LOCK) mode. |
|
|
Review "How to troubleshoot the VSA system" before doing the DTC troubleshooting procedure. |
|
|
Test-drive the vehicle according to local traffic conditions and regulations. Do not test-drive on a lift unless specified. |
|
|
The possible causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes. |
|
Confirmation Procedure |
Basic Condition:
|
|
12 volt battery voltage 9.6 - 16.5 V |
With the HDS:
|
1. |
Turn the vehicle to the ON mode. |
|
2. |
Select the BRAKE LIGHT RELAY TEST in the VSA FUNCTION TEST with the HDS. | |
|
Execution |
Regular Diagnosis |
|
Duration |
About 1 second |
|
DTC Type |
|
|
1 drive cycle |
|
|
Brake system indicator (amber) on | |
|
Fail Safe Action |
|
|
Stop automatic brake hold function |
|
|
Stop ACC function* |
|
|
Stop CMBS function* | |
|
Possible Cause |
|
|
Relay circuit board failure |
|
|
Open between the under-hood fuse/relay box and the relay circuit board (+B STOP line) |
|
|
Open between the brake pedal position switch and the relay circuit board (STOP SW line) |
|
|
Open between the under-dash fuse/relay box and the relay circuit board (IG1 OPTION line) |
|
|
Open between the relay circuit board and the VSA modulator-control unit (BRK DIAG, BRK LAMP lines) |
|
|
VSA modulator-control unit internal failure | | |
|
| | 
