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POWERTRAIN VERIFICATION TEST For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS) For a complete wiring diagram Refer to Section 8W. Diagnostic Test 1. SELECTING THE PROPER VERIFICATION TEST The following verification test are for different repairs. Select the appropriate Verification test for the Speed Control repair Go To 2 Charging System repair Go To 3 NVLD System repair Go To 4 All other repairs Go To 5 2. POWERTRAIN VERIFICATION TEST 1 NOTE: If this vehicle is equipped with an Electronic Throttle Control system, and the APP Sensors, PCM, or NOTE: 2. After completing the Powertrain Verification Test the Transmission Verification Test must be per- NOTE: 3. If the PCM has been replaced and the correct VIN and mileage have not been programmed, a DTC NOTE: 4. If the vehicle is equipped with a Sentry Key Remote Entry, Secret Key data must be updated. Refer 6. Connect the scan tool to the data link connector and erase all codes. 7. Turn the speed control ON (if equipped, cruise light will be on). 8. Depress and release the SET Switch when the vehicle speed is greater than 35 MPH. The speed control should 9. Press and hold the RESUME/ACCEL Switch. The vehicle speed should increase by at least 2 MPH. 10. Press and hold the COAST switch. The vehicle speed should decrease. 11. Using caution, press and release the brake pedal. The speed control should disengage. 12. Bring the vehicle speed back up to 35 MPH. 13. Press the RESUME/ACCEL switch. The speed control should resume the previously set speed. 14. Hold down the SET switch. The vehicle should decelerate. 15. Make sure vehicle speed is greater than 35 mph and release the SET Switch. The vehicle should adjust and set 16. Press and release the CANCEL switch. The speed control should disengage. 17. Bring the vehicle speed back up above 35 mph and engage speed control. 18. Turn the Speed Control Off. (Cruise light will be off). The speed control should disengage. NOTE: OVERSHOOT/UNDERSHOOT FOLLOWING SPEED CONTROL SET. 9 lift foot set 9 ), the vehicle may accelerate and exceed the desired set speed by up to 5 mph (8 km/h). 21. It may also decelerate to less than the desired set speed, before finally achieving the desired set speed. 22. The Speed Control System has an adaptive strategy that compensates for vehicle-to-vehicle variations in speed 9 - 1036 ENGINE ELECTRICAL DIAGNOSTICS LX |