Diagnosis Procedure
The Signal Tech II Tool [- (J-50190)] can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information.
- Activate and display TPMS sensor IDs
- Display tire pressure reported by the TPMS sensor
- Read TPMS DTCs
- Register TPMS sensor IDs
Regarding Wiring Diagram information, refer to WIRING DIAGRAM .
- CHECK TIRE PRESSURE SIGNAL
With CONSULT
- Select "Data Monitor" mode in "AIR PRESSURE MONITOR".
- Check that the air pressures match the specified value.
Monitor item Displayed value AIR PRESS FL Approximately equal to specified value. Refer to TIRE AIR PRESSURE . AIR PRESS FR AIR PRESS RR AIR PRESS RL
Are all tire pressures displayed 0 kPa (psi)?
YES
GO TO STEP 2.
NO
Replace applicable tire pressure sensor. Refer to REMOVAL AND INSTALLATION .
- CHECK BCM POWER CIRCUIT
Check voltage between BCM connector M20 terminal 161 and ground.
BCM Ground Voltage
(Approx.)Connector Terminal M20 161 - Battery voltage Is the inspection result normal?
YES
GO TO STEP 3.
NO
Repair or replace harness or connectors.
- CHECK BCM GROUND CIRCUIT
Check continuity between BCM connector M20 and ground.
BCM Ground Continuity Connector Terminal M20 170 - Yes 171 Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace harness or connectors.
- TIRE PRESSURE SENSOR ID REGISTRATION
Perform tire pressure sensor ID registration. Refer to WORK PROCEDURE .
Can the tire pressure sensor ID registration be completed?
YES
GO TO STEP 5 .
NO
Replace applicable tire pressure sensor. Refer to REMOVAL AND INSTALLATION .
- RECHECK TIRE PRESSURE SIGNAL
With CONSULT
- Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for 10 minutes.
- Select "Data Monitor" mode in "AIR PRESSURE MONITOR".
- Check that the air pressures match the specified value.
Monitor item Displayed value AIR PRESS FL Approximately equal to specified value. Refer to TIRE AIR PRESSURE . AIR PRESS FR AIR PRESS RR AIR PRESS RL
Does Data Monitor display specified value without turning tire pressure warning lamp ON?
YES
Inspection End.
NO
Replace BCM. Refer to REMOVAL AND INSTALLATION (with Intelligent Key system) or REMOVAL AND INSTALLATION (without Intelligent Key system).