|
|
Content .. 1003 1004 1005 1006 ..
3. AAT SENSOR Connect a jumper wire between the (G31) AAT Signal circuit and the With a scan tool, read the AAT voltage. Is the voltage below 1.0 volt with the jumper wire installed? Yes >> Replace the AAT Sensor. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 4 NOTE: Remove the jumper wire before continuing. 4. (G31) AAT SIGNAL CIRCUIT HIGH RESISTANCE Turn the ignition off. Reconnect the AAT sensor harness connector. Using a voltmeter perform a voltage drop test. Backprobe the (G31) AAT Signal circuit at the AAT sensor harness WARNING: WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put Monitor the voltmeter. Is the voltage below 0.5 volts? Yes >> Go To 5 No >> Repair the high resistance in the (G31) AAT Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 5. (G931) SENSOR GROUND CIRCUIT HIGH RESISTANCE Turn the ignition off. Reconnect the AAT sensor harness connector. Using a voltmeter perform a voltage drop test. Backprobe the (G931) Sensor ground circuit at the AAT sensor har- WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the Start the engine and allow it to reach normal operating temperature. Monitor the voltmeter. Is the voltage below 0.5 volts? Yes >> Go To 6 No >> Repair the high resistance in the (G931) Sensor ground circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9 - 44 ENGINE ELECTRICAL DIAGNOSTICS LX |