Checking components and wiring

Check the connectors on the central electronic module (CEM) and the sensor for the seat belt reminder. Check for contract resistance and oxidation. Check for damage or loose connections.

Check the connectors between the central electronic module (CEM) and the sensor for the seat belt reminder. Check for an open-circuit.

Take readings between:

• Central electronic module (CEM) terminal D27 (#27) and seat belt reminder sensor terminal #1
• Central electronic module (CEM) terminal D28 (#28) and seat belt reminder sensor terminal #2.

Check the seat belt reminder sensor. Measure the resistance between terminals #1 and #2 in the sensor connector.

HINT: The resistance should be above 50 kΩ with no passengers and below 50 kΩ with passengers. 

Remedy as necessary.

Other information 

• See Connecting the breakout box
• -2004: Signal specification
• 2005-: Signal specification
• To replace the seat belt reminder sensor, see: Heater pad, replacing (-2004) or Heater pad backrest and cushion, replacing (2005-).
• See Checking wiring and terminals

• Continue 

  Refer to Verification