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4. (D508) COM - LIN TIRE PRESSURE MONITOR LAN CIRCUIT SHORT TO VOLTAGE Turn the ignition off. Disconnect the Tire Pressure Transponder harness connector. Disconnect the Sentry Key Remote Entry Module harness connector. Turn the ignition on. Measure the voltage of the (D508) COM - LIN Tire Pressure Monitor Is there any voltage present? Yes >> Repair the (D508) COM - LIN Tire Pressure Monitor LAN circuit for a short to voltage. Perform TPM VERIFICATION TEST. (Refer to 22 - TIRES/ No >> Go to 5 5. (D508) COM - LIN TIRE PRESSURE MONITOR LAN CIRCUIT SHORT TO GROUND Turn the ignition off. Measure the resistance between ground and the (D508) COM - LIN Tire Is the resistance below 5.0 ohms? Yes >> Repair the (D508) COM - LIN Tire Pressure Monitor LAN circuit for a short to ground. Perform TPM VERIFICATION TEST. (Refer to 22 - TIRES/ No >> Go to 6 6. (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 the (D508) COM - LIN Tire Pressure Monitor Using a 12-Volt test light connected to battery voltage, probe the (D508) COM - LIN Tire Pressure Monitor LAN NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connec- Does the test light illuminate bright? Yes >> Go to 7 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/WHEELS - DIAGNOSIS AND TESTING) PM TIRES/WHEELS - ELECTRICAL DIAGNOSIS 22 - 43 |