Test results

Check for the presence of short circuits to earth or Vbatt.

Move on to Step 2

1. Presence of short circuit to earth

2. Presence of short circuit to Vbatt.

1. Restore correct insulation to earth

2.Restore correct insulation to +batt

Check the aerial power supply signal

 See Test 4450BB TPMS SYSTEM TRANSMITTER AERIAL OPERATION CHECK

End of diagnosis

1. Lack of continuity between TPMS control unit and aerial

2. Lack of insulation of the wiring between the TPMS control unit and the aerial

3. Aerial not working properly

4. TPMS control unit not working properly

1. Restore the correct continuity for the wiring

2. Restore correct wiring insulation

3. Replace the aerial

4. Replace the TPMS control unit

 Op. 4450B91 TPMS SYSTEM CONTROL UNIT R R