For 1990-2009 cars
ABS Components
Cell 44: PWR, GND, and Stoplamp/BTSI Switch
Handling ESD Sensitive Parts Notice
Cell 44: PWR, GND, and Stoplamp/BTSI Switch

### Circuit Description

The valve solenoid circuits are supplied with battery power when the ignition is ON. The EBCM/EBTCM controls the valve functions by grounding the circuit when necessary.

### Conditions for Setting the DTC

The EBCM/EBTCM senses a discrepancy such as an open, short to ground, or short to voltage in the circuit.

### Action Taken When the DTC Sets

• | A malfunction DTC is stored.

• | The ABS/TCS is disabled.

• | The ABS indicator isturned ON.

• | The TRACTION OFF indicator is turned ON.

### Conditions for Clearing the DTC

• | The condition for the DTC is no longer present and you used the scan tool Clear DTC function.

• | The EBCM/EBTCM does not detect the DTC in 50 drive cycles.

### Diagnostic Aids

Make sure the integrity of the connection between the EBCM/EBTCM and the BPMV is secure, tight, and free from corrosion.

### Test Description

The numbers below refer to step numbers on the diagnostic table.

1. This step checks the resistance value of the solenoid.

2. This step checks for a short to ground in the BPMV.

3. This step checks for an internal short to voltage.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the ABS Diagnostic System Check? | -- | Go to Step 2 | Go to Diagnostic System Check - ABS
2 |

1. Turn OFF the ignition.
2. Disconnect the EBCM/EBTCM connector.
3. Remove the EBCM/EBTCM from the BPMV.
4. Inspect the EBCM/EBTCM to BPMV connector for conditions which may cause intermittents such as damage, corrosion, or poor terminal contact.

Are the internal connectors OK and cavity free of brake fluid?

--

Go to Step 3

Go to Step 6

3 |

1. Install the J 41247 BPMV pinout box to the BPMV connector.
2. Use the J 39200 DMM in order to measure the resistance between the J 41247 terminal 1 and terminal 7.

Is the resistance within the specified range?

8-12 ohms

Go to Step 4

Go to Step 8

4 | Use the J 39200 DMM in order to measure the resistance between the J 41247 terminal 1 and the BPMV case. Does the resistance equal the specified value? | OL (infinite) | Go to Step 5 | Go to Step 8
5 |

1. Remove the J 41247 .
2. Reinstall the EBCM/EBTCM to BPMV.
3. Reconnect the EBCM/EBTCM connector
4. Turn the ignition switch to the RUN position while the engine is off.

Does DTC C1263 reset as a current DTC?

--

Go to Step 9

Go to Step 7

6 |

1. If connector corrosion or damage is present, replace BPMV and/or EBCM/EBTCM as necessary.
2. If brake fluid is present, replace both the BPMV and the EBCM/EBTCM. Refer to Brake Pressure Modulator Valve Replacement and Electronic Brake Control Module Replacement .

Did you complete the repair?

--

Go to Diagnostic System Check - ABS

--

7 | Use a scan tool in ABS/TCS special functions in order to run the AUTOMATED test. Does DTC C1263 reset as a current DTC? | -- | Go to Step 8 | Go to Diagnostic System Check - ABS
8 | Replace the BPMV. Refer to Brake Pressure Modulator Valve Replacement . Did you complete the repair? | -- | Go to Diagnostic System Check - ABS | --
9 | Replace the EBCM/EBTCM. Refer to Electronic Brake Control Module Replacement . Did you complete the repair? | -- | Go to Diagnostic System Check - ABS | --