Pinpoint Test P: DTC B11E8:16

Anti-Lock Control - Four-Channel

Pinpoint Test P: DTC B11E8:16

Normal Operation

- DTC B11E8:16 (ABS Power Supply: Circuit Voltage Below Threshold)- this DTC sets in continuous memory and on demand if the voltage supplied to the ABS module falls below 9 volts during the ABS module self-test or normal operation.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Charging system concern

- ABS module

PINPOINT TEST P : DTC B11E8:16

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector

NOTE: Failure to disconnect the battery when instructed results in false resistance readings.

P1 RECHECK THE ABS MODULE DTCs

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: Self Test- ABS Module.

- Clear the ABS module DTCs.

- Ignition OFF.

- Ignition ON.

- Wait 10 seconds.

- Repeat the ABS module self-test.

Is DTC B11E8:16 still present?

Yes
GO to P2.

No
The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.

P2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM

- Enter the following diagnostic mode on the scan tool: Self Test- PCM KOEO (Key ON Engine OFF).

Is DTC P0620, P0622, P0625, P0626 or P065B set in the PCM?

Yes
REFER to Charging System.

No
GO to P3.

P3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE

- Check the battery condition and verify the battery is fully charged.

Is the battery OK and fully charged?

Yes
GO to P4.

No
REFER to Battery.

P4 CHECK THE ABS MODULE VOLTAGE SUPPLY

- Ignition OFF.

- Disconnect: ABS Module C135.

- Ignition ON.

- Measure the voltage between the ABS module C135 and ground as follows:

ABS Module Connector-Pin Circuit C135-1 SBB96 (VT/RD) C135-25 SBB86 (BN/RD) C135-30 CBB54 (VT/OG)






Are the voltages within 0.2 volt of the recorded battery voltage?

Yes
GO to P5.

No
REPAIR circuit SBB96 (VT/RD) for high resistance. CLEAR the DTC. REPEAT the self-test.

P5 CHECK THE ABS MODULE GROUND CIRCUIT

- Ignition OFF.

- Disconnect: Battery Negative Cable.

- Measure the resistance between the ABS module C135-13, circuit GD163 (BK/GY), harness side and ground; and between the ABS module C135-38, circuit GD163 (BK/GY), harness side and ground.





Is the resistance less than 5 ohms?

Yes
GO to P6.

No
REPAIR circuit GD163 (BK/GY) for open circuit. CLEAR the DTCs. REPEAT the self-test.

P6 CHECK THE ABS MODULE GROUND EYELET AT THE CHASSIS

- Ignition OFF.

- Remove the bolt retaining G135 on the LH frame rail.
- Clean the body mating surface and ground eyelets.

- Install the ground eyelet to the chassis with the retaining bolt.

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: Self Test- ABS Module.

Is the concern still present?

Yes
GO to P7.

No
The concern was caused by a loose or corroded connector. CLEAR the DTCs. REPEAT self-test.

P7 CHECK FOR CORRECT ABS MODULE OPERATION

- Disconnect the ABS module connector.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect the ABS module connector and make sure it seats correctly.

- Operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.