ABS sensor testing - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

df14936 · 06-23-2023, 08:27 AM

I'm working on an ABS C0045 5A: Left Rear Wheel Speed Sensor Circuit Not Plausible error and replaced the sensor to no effect. 2011 LT2 with a manual transmission.

I am trying to do the dynamic sensor test and can't get a reading on any wheel.

1. Ignition OFF, connect the harness connector at the wheel speed sensor.
2. Connect a fused jumper wire between B+ and the 12 V reference circuit terminal listed below:
 Left front wheel speed sensor circuit terminal 21 at the K17 Electronic Brake Control Module
(EBCM) harness connector
 Right front wheel speed sensor circuit terminal 18 at the K17 Electronic Brake Control Module
(EBCM) harness connector
 Left rear wheel speed sensor circuit terminal 33 at the K17 Electronic Brake Control Module
(EBCM) harness connector
 Right rear wheel speed sensor circuit terminal 19 at the K17 Electronic Brake Control Module
(EBCM) harness connector
3. Spin the wheel very slowly, test for alternating current between ca. 7 mA and ca. 14 mA between the low
reference circuit terminal listed below and ground:
 Left front wheel speed sensor circuit terminal 34 at the K17 Electronic Brake Control Module
(EBCM) harness connector
 Right front wheel speed sensor circuit terminal 6 at the K17 Electronic Brake Control Module
(EBCM) harness connector
 Left rear wheel speed sensor circuit terminal 20 at the K17 Electronic Brake Control Module
(EBCM) harness connector
 Right rear wheel speed sensor circuit terminal 31 at the K17 Electronic Brake Control Module
(EBCM) harness connector

On each sensor I can read about 0.45mA and I never get a change when spinning the wheels.
Has anyone done this test, or is there a different one that works to check the integrity of the sensors?

06-23-2023, 08:27 AM	#1
df14936 Drives: 2011 LS Join Date: Apr 2023 Location: Cedar Falls IA Posts: 3	ABS sensor testing I'm working on an ABS C0045 5A: Left Rear Wheel Speed Sensor Circuit Not Plausible error and replaced the sensor to no effect. 2011 LT2 with a manual transmission. I am trying to do the dynamic sensor test and can't get a reading on any wheel. 1. Ignition OFF, connect the harness connector at the wheel speed sensor. 2. Connect a fused jumper wire between B+ and the 12 V reference circuit terminal listed below:  Left front wheel speed sensor circuit terminal 21 at the K17 Electronic Brake Control Module (EBCM) harness connector  Right front wheel speed sensor circuit terminal 18 at the K17 Electronic Brake Control Module (EBCM) harness connector  Left rear wheel speed sensor circuit terminal 33 at the K17 Electronic Brake Control Module (EBCM) harness connector  Right rear wheel speed sensor circuit terminal 19 at the K17 Electronic Brake Control Module (EBCM) harness connector 3. Spin the wheel very slowly, test for alternating current between ca. 7 mA and ca. 14 mA between the low reference circuit terminal listed below and ground:  Left front wheel speed sensor circuit terminal 34 at the K17 Electronic Brake Control Module (EBCM) harness connector  Right front wheel speed sensor circuit terminal 6 at the K17 Electronic Brake Control Module (EBCM) harness connector  Left rear wheel speed sensor circuit terminal 20 at the K17 Electronic Brake Control Module (EBCM) harness connector  Right rear wheel speed sensor circuit terminal 31 at the K17 Electronic Brake Control Module (EBCM) harness connector On each sensor I can read about 0.45mA and I never get a change when spinning the wheels. Has anyone done this test, or is there a different one that works to check the integrity of the sensors?