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A/C PRESSURE SENSOR CIRCUIT (CONTINUED) 2. MEASURE THE RESISTANCE FROM THE A/C PRESSURE SENSOR SIGNAL CIRCUIT TO THE 5-VOLT Turn the ignition off. Disconnect the A/C Pressure Sensor harness connector. Note: Check connector - Clean/repair as necessary. Note: Check connector - Clean/repair as necessary. Is the resistance below 5.0 ohms? Yes >> Repair the A/C Pressure Sensor Signal circuit for a short to the 5-Volt Supply circuit. Perform BODY VERIFICATION TEST. No >> Go to 3 3. MEASURE THE VOLTAGE ON THE A/C PRESSURE SENSOR SIGNAL CIRCUIT Turn the ignition on. Measure the voltage on the A/C Pressure Sensor Signal circuit at the Is the voltage above 5.2 volts? Yes >> Repair the A/C Pressure Sensor Signal circuit for a short to battery voltage. Perform BODY VERIFICATION TEST. No >> Go to 4 4. MONITOR A/C PRESSURE SENSOR VOLTAGE WITH DRB III T Turn the ignition off. Connect a jumper wire between the A/C Pressure Sensor Signal circuit Turn the ignition on. With the DRB III T , monitor the A/C Pressure Sensor voltage. Is the voltage below 1.0 volt? Yes >> Replace the A/C Pressure Sensor. (Refer to 24 - HEAT- ING & AIR CONDITIONING/CONTROLS/A/C PRESSURE Perform BODY VERIFICATION TEST. No >> Go to 5 ZH HEATING & AIR CONDITIONING - ELECTRICAL DIAGNOSTICS 24 - 35 |