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Circuit/System Verification

NOTE: Low tire pressure in one or more tires is indicated by a continuously illuminated tire pressure monitor indicator icon after the IPC bulb check is completed. If equipped with a DIC, a check tire pressure type message will also be displayed. It is not necessary to perform the Learn procedure for a low tire condition.
When a TPM DTC is set, the tire pressure monitor indicator icon will flash for 1 minute after the IPC bulb check is completed and then remains illuminated. If equipped with a DIC, a service tire monitor type message will also be displayed.
  1. Verify all tires are inflated to the proper pressure ±10%. Refer to VEHICLE CERTIFICATION, TIRE PLACARD, ANTI-THEFT AND SERVICE PARTS ID LABEL .
    • If not within the specified range, adjust all tire pressures to specification and drive the vehicle over 40 km/h (25 mph) for greater than 2 minutes. Verify the tire pressure monitor indicator icon is OFF.
  2. Using the J-46079, activate each tire pressure sensor and record each sensors tire pressure reading. Check the tire pressures with a known accurate hand held tire pressure gauge. Verify that the pressure readings from the special tool do not differ more than 27.6 kPa (4 psi) from the actual tire pressure readings.
    • If not within the specified range, replace the suspect tire pressure sensor.
  3. Using a scan tool, enable the TPM learn mode. Use the J-46079 in simulate mode to learn 4 simulated sensor transmissions into the RCDLR. Observe tire pressures in the scan tool data display. Verify the simulated tire pressures do not differ more than +/- 27.6 kPa (4 psi) of the scan tool reading.
    • If not within the specified range, replace the RCDLR.
  4. Using a scan tool, select instrument panel special functions Lamp Test. Command the instrument panel warning lamps OFF. Verify the tire pressure monitor indicator icon turns OFF.
    • If the tire pressure monitor icon does not turn OFF, replace the IPC.
  5. Ignition ON, use the scan tool to setup the Tire Type/Pressure Selection in the RCDLR Module Setup menu. Refer to the VEHICLE CERTIFICATION, TIRE PLACARD, ANTI-THEFT AND SERVICE PARTS ID LABEL . Drive the vehicle over 40 km/h (25 mph) for greater than 2 minutes. Verify the tire pressure monitor indicator icon is OFF.
    • If the tire pressure monitor indicator icon is ON, replace the RCDLR.
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