DTC C104B
Precautions: Precautions for ESP® · Precautions for Diagnosing Trouble · Test with Speedometer Tester or Other Equipment · Precautions for Brakes · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
C104B: Back Up Light Switch System Malfunction Reverse signal is out of specified range. |
•Back up light switch
•Back up light switch circuit •ESP® control module |
Circuit Diagram
| [A]: | ESP® control module connector (View: [a]) | 2. | Ignition power supply | 6. | To back up light |
| A1: | Back up light switch power supply circuit | 3. | “BACK” fuse | 7. | To parking sensor system control module (if equipped) |
| A2: | Back up light switch signal circuit | 4. | Back up light switch | 8. | To navigation (if equipped) |
| 1. | J/B | 5. | ESP® control module |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “ESP® System Check” performed?
|
Go to Step 2.
|
Go to ESP® System Check.
|
| 2 |
Back up light switch power supply circuit check
1)With ignition “OFF”, disconnect back up light switch connector.
2)Check for proper connection to back up light switch connector.
3)If connections are OK, set ignition “ON”.
4)Check that voltage between “A1” circuit and ground is approx. 12 V.
Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
Back up light switch signal circuit check
1)Set ignition “OFF”.
2)Disconnect “E336” and “E08” connectors.
3)Check for proper connection to “E336” and “E08” connectors.
4)If connections are OK, check the following points.
•Resistance of “A2” circuit: less than 1 Ω
•Resistance between “A2” circuit and ground: infinity •Resistance between “A2” circuit terminal and other terminal at back up light switch, “E336” and “E08” connectors: infinity •Voltage of “A2” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 4.
|
Repair or replace defective wire harness.
|
| 4 |
Back up light switch check
1)Check back up light switch.
•M16A model:
 •K14C model: •D16AA model: Is check result OK?
|
Replace ESP® hydraulic unit / control module assembly and recheck DTC.
|
Replace back up light switch.
•M16A model:
•K14C model: •D16AA model: |