B1363

Tire Pressure Monitoring System (TPMS)

Pinpoint Test F: DTCs B1359 and B1363

Refer to Wiring Diagrams Set 118, Tire Pressure Monitoring System (TPMS) for schematic and connector information. Electrical Diagrams

Normal Operation

With the ignition switch in the RUN or START position, the Tire Pressure Monitor (TPM) /Vehicle Security Module (VSM) receives voltage from the Central Junction Box (CJB). When the ignition is in the RUN or ACC position, voltage is received from the CJB (Central Junction Box).

- DTC B1359 (Ignition Run/Acc Circuit Failure)- sets if the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) detects the RUN/ACC input is open or shorted to ground.

- DTC B1363 (Ignition Start Circuit Failure)- sets if the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) detects the RUN/START input is open or shorted to ground.

This pinpoint test is intended to diagnose the following:

- Fuse(s)

- Wiring, terminals or connectors

- TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module)

- Ignition switch

PINPOINT TEST F : DTCs B1359 and B1363

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

F1 CHECK ACC VOLTAGE TO THE TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module)

- Ignition OFF.

- Disconnect: TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) C2409A.

- Ignition ON.

- Measure the voltage between the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) C2409A-20, circuit 75-WA1 (YE/RD), harness side and ground.





Is the voltage greater than 10 volts?

Yes
GO to F2.

No
VERIFY the CJB (Central Junction Box) fuse 137 (7.5A) is OK. If OK, REPAIR open in circuit 75-WA1 (YE/RD). If not OK, REFER to the Wiring Diagrams to identify the possible causes of the short circuit. Electrical Diagrams

F2 CHECK RUN VOLTAGE TO THE TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module)

- Ignition OFF.

- Disconnect: TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) C2409A.

- Ignition ON.

- Measure the voltage between the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) C2409A-23, circuit 15-WA6 (GN/YE), harness side and ground.





Is the voltage greater than 10 volts?

Yes
GO to F3.

No
VERIFY the CJB (Central Junction Box) fuses 137 (7.5A) and 179 (7.5A) are OK. If OK, REPAIR open in circuit 15-WA6 (GN/YE). If not OK, REFER to the Wiring Diagrams to identify the possible causes of the short circuit. Electrical Diagrams

F3 CHECK FOR CORRECT TPMS (Tire Pressure Monitoring System) OPERATION

- Disconnect all the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) electrical connectors.

- Check the connectors for:
- corrosion
- damaged pins
- pushed-out pins


- Connect all the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) connectors and make sure they seat correctly.

Is the concern still present?

Yes
INSTALL a new TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module). REFER to Tire Pressure Monitor (TPM) Module . TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.