C123C

C123C-DYNAMICS SENSOR MOUNTING/INSTALLATION PERFORMANCE








When Monitored:

With the ignition on.

Set Condition:

When the Anti-Lock Brake Module indicates the Dynamics Sensor values are invalid.

Possible Causes

- WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE
IMPROPERLY INSTALLED DYNAMICS SENSOR
(G94) DYNAMICS SENSOR GROUND CIRCUIT OPEN
- DYNAMICS SENSOR

Diagnostic Test

1. CHECK FOR A DTC C123C-DYNAMICS SENSOR MOUNTING/INSTALLATION PERFORMANCE





NOTE: This DTC must be active for the results of this test to be valid

Turn the ignition on.
With the scan tool read and record DTC's.
With the scan tool, read and record Freeze Fame information.
With the scan tool, erase DTC's.
Cycle the ignition switch from off to on.
With the scan tool, read and record DTC's.

Does the scan tool display: C123C-DYNAMICS SENSOR MOUNTING/INSTALLATION PERFORMANCE?

Yes

- Go To 2

No

- Refer to the INTERMITTENT CONDITION diagnostic procedure. Testing and Inspection.
- Perform ABS VERIFICATION TEST - VER 1. ABS Verification Test.

2. CHECK THE WIRING HARNESS, TERMINALS, AND CONNECTORS





Visually inspect the related wiring harness. Look for any bruised chafed pierced or partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken bent pushed out or corroded terminals.

Were any problems found?

Yes

- Repair as necessary.
- Perform ABS VERIFICATION TEST VER 1. ABS Verification Test.

No

- Go To 3

3. CHECK THE DYNAMICS SENSOR INSTALLATION

NOTE: Dynamics Sensor installation and mounting bolt torque is crucial for proper operation.

Turn the ignition off.
Check the Dynamics Sensor for damaged, modified, and bent mounting brackets.
Check the Dynamics Sensor mounting bolts for a loose or over tightened condition.

Were any problems found?

Yes

- Repair as necessary.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Go To 4

4. CHECK THE RESISTANCE BETWEEN THE (G94) DYNAMICS SENSOR GROUND CIRCUIT AND GROUND





Turn the ignition off.
Disconnect the Dynamics Sensor harness connector.
Measure the resistance between the (G94) Dynamics Sensor Ground circuit and ground.

Is the resistance below 5.O ohm?

Yes

- Replace the Dynamics Sensor.
- Perform ABS VERIFICATION TEST VER 1. ABS Verification Test.

No

- Repair the (G94) Dynamics Sensor Ground circuit for an open circuit.
- Perform ABS VERIFICATION TEST VER 1. ABS Verification Test.