For 1990-2009 cars
ABS Components
Cell 44: PWR, GND, and Stoplamp/BTSI Switch
Handling ESD Sensitive Parts Notice
Cell 10: Battery and Underhood Fuse Blocks
Cell 14: G104

### Circuit Description

The BPMV pump motor ground is supplied through a ground stud on the pump motor to a good ground.

### Conditions for Setting the DTC

All of the following conditions occur:

• | The pump relay is commanded OFF.

• | The pump motor ground resistance is greater than 6900 ohms.

### 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

• | It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.

• | An intermittent malfunction can be caused by poor connections, broken insulation, or a wire that is broken inside the insulation.

• | If an intermittent malfunction exists, refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.

### Test Description

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

1. This step checks for a good pump motor ground.

2. This step checks for proper pump motor resistance.

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. Use the J 39200 DMM in order to measure the resistance between the motor ground stud and a good chassis ground.

Is the resistance less the specified value?

2 ohms

Go to Step 3

Go to Step 8

3 |

1. Disconnect the EBCM/EBTCM connector.
2. Remove the EBCM/EBTCM from the BPMV.
3. Inspect the EBCM/EBTCM to the BPMV connector for any of the following conditions:

• | Damage

• | Corrosion

• | Poor terminal contact

• | The presence of brake fluid

Is the connector free of the previous conditions?

--

Go to Step 4

Go to Step 5

4 |

1. Install the J 41247 to the BPMV connector.
2. Use the J 39200 DMM in order to measure the resistance between the BPMV internal connector terminal 8 and the motor ground stud.

Is the resistance within the specified range?

0.2-10.0 ohms

Go to Step 6

Go to Step 7

5 |

1. If corrosion or connector damage is evident, replace the BPMV or the EBCM/EBTCM as needed.
2. If brake fluid is present, replace the BPMV and the EBCM/EBTCM.

Did you complete the repair?

--

Go to Diagnostic System Check - ABS

--

6 | Replace the EBCM/EBTCM. Refer to Electronic Brake Control Module Replacement . Did you complete the repair? | -- | Go to Diagnostic System Check - ABS | --
7 | Replace the BPMV. Refer to Brake Pressure Modulator Valve Replacement . Did you complete the repair? | -- | Go to Diagnostic System Check - ABS | --
8 | Repair the open or high resistance in CKT 1150 (BLK). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Diagnostic System Check - ABS | --