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LEFT HEATER CORE TEMPERATURE SENSOR CIRCUIT (CONTINUED) 3. READ LEFT HEATER CORE TEMPERATURE SENSOR VOLTAGE WITH DRB III Turn the ignition off. Connect a jumper wire between the Left Heater Core Temperature Turn the ignition on. With the DRB III T , read the Left Heater Core Temperature Sensor volt- age. Does the DRB III T display LEFT HEATER CORE TEMP: 4.5 VOLTS or greater? Yes >> Go to 4 No >> Replace the Heater Core Temperature Sensor. (Refer to 24 - HEATING & AIR CONDITIONING/CONTROLS/TEM- Perform BODY VERIFICATION TEST. 4. MEASURE THE RESISTANCE OF THE LEFT HEATER CORE TEMPERATURE SENSOR SIGNAL CIRCUIT Turn the ignition off. Disconnect the A/C Heater Control Module harness connector. Note: Check connector - Clean/repair as necessary. Is the resistance below 5.0 ohms? Yes >> Go to 5 No >> Repair the Left Heater Core Temperature Sensor Signal circuit for an open. Perform BODY VERIFICATION TEST. ZH HEATING & AIR CONDITIONING - ELECTRICAL DIAGNOSTICS 24 - 11 |