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Check Door Switch

CHECKING STEPS REFERENCE

Step Check Yes No
1 CHECK DOOR SWITCH CIRCUIT. 
Measure the voltage between the security control module harness connector terminal and chassis ground.
Connector & terminal 
  1. Front and rear door: 
  2. (B93) No. 5 (+) - Chassis ground (-): 
  3. Rear gate or trunk lid: 
  4. (B93) No. 4 (+) - Chassis ground (-): 
 Is the measured value less than 1.5 V when each door, rear gate or trunk lid is opened? Go to step 2. Go to step 3.
2 CHECK DOOR SWITCH CIRCUIT. 
Measure the voltage between the security control module harness connector terminal and chassis ground.
Connector & terminal 
  1. Front and rear door: 
  2. (B93) No. 5 (+) - Chassis ground (-): 
  3. Rear gate or trunk lid: 
  4. (B93) No. 4 (+) - Chassis ground (-): 
 Does the measured value exceed the 10 V when all doors and rear gate or trunk lid is closed? The door switch is OK. Go to step 3.
3 CHECK DOOR SWITCH. 
  1. Disconnect the door switch harness connector.
  2. Measure the resistance between the door switch terminals.

    Terminal 

    1. Door switch: 
    2. No. 1 - No. 3: 
    3. Rear gate latch switch or trunk room light: 
    4. No. 1 - No. 2: 
 Is the measured value More than 1 MΩ when door switch is pushed? Go to step 4. Replace the door switch.
4 CHECK DOOR SWITCH. 
Measure the resistance between the door switch terminals.
Terminal 
  1. Door switch: 
  2. No. 1 - No. 3: 
  3. Rear gate latch switch or trunk room light switch: 
  4. No. 1 - No. 2: 
 Is the measured value Less than 1 Ω when door switch is released? Check the harness for open circuits and shorts between the security control module and door switch. Replace the door switch.
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