Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Pinpoint Test A: No Communication With The Traction Control Module
Test Step
A1 CHECK THE VOLTAGE TO THE TRACTION CONTROL MODULE
- Key in OFF position.
- Disconnect: Traction Control Module C135.
- Key in ON position.
- Measure the voltage between the traction control module C135 pin 4, circuit 15-CF6A (GN/YE), harness side and ground.
- Is the voltage greater than 10 volts?
Result / Action to Take
Yes
Go to A2.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
Test Step
A2 CHECK THE TRACTION CONTROL MODULE GROUNDS
- Key in OFF position.
- Measure the resistance between the traction control module C135 pin 16, circuit 91-CF6 (BK/YE), harness side and ground; and between the traction control module C135 pin 47, circuit 91-CF13 (BK/BU), harness side and ground.
- Are the resistances less than 5 ohms?
Result / Action to Take
Yes
REFER to MODULE COMMUNICATIONS NETWORK .
No
REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.