Pinpoint Test 2: SJB Will Not Enter Sensor Training Mode

PINPOINT TEST 2: SJB WILL NOT ENTER SENSOR TRAINING MODE

Normal Operation

For the smart junction box (SJB) to enter tire pressure monitoring system (TPMS) sensor training mode, the SJB must receive valid inputs from the brake pedal position switch (OFF-ON-OFF) and ignition switch (both OFF and RUN), and it must receive valid vehicle speed sensor input (0 km/h [0 mph]). See Tire Pressure Monitoring System (TPMS) Sensor Training for the complete sensor training procedure.

Possible Causes
- Wiring, terminals or connectors
- Brake on/off (BOO) switch
- Ignition switch
- SJB

Diagnostic Procedure