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.
Component Testing
2011 Cadillac Escalade Base, AWDSECTION Component Testing
WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that DTCs P1AF0, P1AF2, P1B43, P1B44, P1B0B, or P1B0C is not set.
- If DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Ignition OFF, disconnect the X176 harness connector at the transmission.
- Install the DT-48493Β jumper harness to the transmission side only.
- Test for 7.0-9.0 Ξ© between the AC terminal 15 and the AC terminal 16.
- If not within the specified range, test the transmission control wiring harness extension harness circuits for a short to voltage, short to ground, or an open/high resistance. If the circuits test normal replace the M15A drive motor with generator assembly.
- Test for 20-23 Ξ© between the signal terminal 20 and the signal terminal 21.
- If not within the specified range, test the transmission control wiring harness extension harness circuits for a short to voltage, short to ground, or an open/high resistance. If the circuits test normal replace the M15A drive motor with generator assembly.
- Test for 23-26 Ξ© between the signal terminal 17 and the signal terminal 18.
- If not within the specified range, test the transmission control wiring harness extension harness circuits for a short to voltage, short to ground, or an open/high resistance. If the circuits test normal replace the M15A drive motor with generator assembly.
- Test for greater than 10, 000 Ξ© between the terminals listed below and ground:
- Terminal 15
- Terminal 16
- Terminal 17
- Terminal 18
- Terminal 20
- Terminal 21
- If less than the specified value, test the transmission control wiring harness extension harness circuit for a short to ground. If the circuit tests normal replace the M15B drive motor with generator assembly.
- Test for infinite resistance between the terminals listed below:
- Terminals 15 and 17
- Terminals 15 and 20
- Terminals 17 and 20
- If less than the specified value, test the transmission control wiring harness extension harness circuits for a short between the circuits. If the circuits test normal replace the M15B drive motor with generator assembly.
- If the test passed refer to Circuit/System Testing.
NOTE:
You must perform the Component Testing before proceeding with Circuit/System Testing.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.