C123C-Dynamics sensor mounting/installation performance

C123C code - With vehicle speed above 7 mph (11km/h), but not if the sensor signal is invalid. If the Antilock Brake System (ABS) Module detects implausible Dynamics sensor values.

Possible Causes C123C Code

• Wiring harness, terminal, connector damage
• Dynamics sensor installation
• Dynamics sensor

Diagnose code C123C-Dynamics sensor mounting/installation performance

Step 1. Verify DTC is active

Note : If present, diagnose and repair DTC C2114-Dynamics sensor supply voltage low or DTC C2115-Dynamics sensor supply voltage high before diagnosing this DTC.

Turn the ignition on, with the scan tool, read and record the ABS DTC. With the scan tool, read and record the environmental data to help identify the conditions in which the DTC was set. With the scan tool, erase the ABS DTC. Cycle the ignition switch.

Warning : Make sure brake capability is available before road testing.

Test drive the vehicle by turning the vehicle left or right in s curving manner at a velocity between 6 and 12 mph (10 and 20 km/h). Park the vehicle, with the scan tool, read the ABS DTC.

Does this DTC reset ?

Yes, go to step 2.

No, the condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched or partially broken wires.

Step 2. 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.

No, go to step 3.

Step 3. Inspect related wiring harness, terminals, and connectors
Visually inspect the related wiring harness. Look for any pinched, chefed, pierced and partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out and corroded terminals.

Were any problems found ?

Yes, repair as necessary.

No, replace the Dynamics sensor. Perform the ABS Verification Test.

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