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.
Power Circuits
Release Engine Control Module (ECM) connector retaining clip and remove connector from ECM. Access is gained by removing front seat base trim of right hand front seat. Remove connector shroud and maneuver it along harness until there is enough clearance to enable meter probes to be inserted into back of plug. There are six pin numbers (1, 13, 14, 27, 28 and 40) molded onto rear of plug as shown in illustration. See Fig 2 . Pin wire colors are identified in ENGINE CONTROL MODULE CONNECTOR TERMINAL IDENTIFICATION table.
To test Powertrain Control Module (PCM) power circuits, see Fig 1 . After completing test, retest vehicle to ensure faults have been rectified. If faults still persist, recheck using Lucas diagnostic equipment.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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