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7. (D508) COM - LIN TIRE PRESSURE MONITOR LAN CIRCUIT OPEN OR HIGH RESISTANCE Use a jumper wire with one end connected to ground and the other to Using a 12-Volt test light connected to battery voltage, probe the (D508) NOTE: The test light should be illuminated and bright. Compared Does the test light illuminate bright? Yes >> Go to 9 No >> Repair the (D508) COM - LIN Tire Pressure Monitor LAN circuit for an open circuit or high resistance. Perform TPM VERIFICATION TEST. (Refer to 22 - TIRES/ 8. POWER AND GROUND CIRCUIT OPEN Turn the ignition on. With a voltmeter measure the voltage between the power and ground circuit at the Trigger Module. Is the voltage at least the same as battery voltage? Yes >> Go To 10 No >> Repair the open circuit. Perform TPM VERIFICATION TEST. (Refer to 22 - TIRES/WHEELS/TIRE PRESSURE MONITORING - 9. CHECK FOR ADDITIONAL TRIGGER MODULE COMMUNICATION RELATED DTCs With the scan tool, select Network View and select Advanced. Is there more than one module with active DTCs “Logged Against” the WCM? Yes >> Replace/update the WCM in accordance with the service information. Perform TPM VERIFICATION TEST. (Refer to 22 - TIRES/WHEELS/TIRE PRESSURE MONITORING - No >> Replace the Tire pressure trigger Module in accordance with the service information. Perform TPM VERIFICATION TEST. (Refer to 22 - TIRES/WHEELS/TIRE PRESSURE MONITORING - PM TIRES/WHEELS - ELECTRICAL DIAGNOSIS 22 - 39 |