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P0580-SPEED CONTROL SWITCH 1 CIRCUIT LOW (3.7L, 4.7L) (CONTINUED) 3. SPEED CONTROL RESUME/ACCEL SWITCH With the scan tool, monitor the Speed Control Switch voltage. Disconnect the Speed Control Resume/Accel Switch harness connector. Did the voltage change to above 4.7 volts? Yes >> Replace the Speed Control Resume/Accel Switch. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 4 4. CLOCKSPRING Turn the ignition off. Disconnect the C1 Clockspring 6-way harness connector (instrument panel wiring side) per Service Information. Ignition on, engine not running. With the scan tool, read the S/C Switch voltage. Did the S/C Switch volts change to 5.0 volts? Yes >> Replace the Clockspring. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 5 5. (V37) S/C NO.1 SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off. Connect the C1 Clockspring harness connector per Service Informa- Disconnect the C2 and C3 PCM harness connectors. Measure the resistance between ground and the (V37) S/C Signal cir- Is the resistance below 100 ohms? Yes >> Repair the short to ground in the (V37) S/C Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 6 HB ENGINE ELECTRICAL DIAGNOSTICS 9 - 615 |