FixVault

Check Door Switch

CHECKING DOOR SWITCH

Step Check Yes No
1 : CHECK DOOR SWITCH CIRCUIT. 
Measure the voltage between the security control unit harness connector terminal and chassis ground.
Connector & terminal 
Front and rear door: 
(B93) No. 5 (+) - chassis ground (-): 
Rear gate: 
(B93) No. 4 (+) - chassis ground (-): 
Is the voltage 0 V when any door or rear gate is opened? Go to step 2.  Go to step .
2 : CHECK DOOR SWITCH CIRCUIT. 
Measure the voltage between the security control unit harness connector terminal and chassis ground.
Connector & terminal 
Front and rear door: 
(B93) No. 5 (+) - chassis ground (-): 
Rear gate: 
(B93) No. 4 (+) - chassis ground (-): 
Is the voltage more than 10 V when any door and rear gate are closed? The door switch is OK. Go to step .
3 : CHECK DOOR SWITCH. 
  1. Disconnect the door switch harness connector.
  2. Measure the resistance between the door switch terminals.

Terminal 
Door switch No. 1 - No. 3: 
Rear gate latch switch No. 1 - No. 2: 
Is the resistance more than 1 Mohm 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 
Door switch No. 1 - No. 3: 
Rear gate latch switch No. 1 - No. 2: 
Is the resistance less than 1 ohm when door switch is released? Check the harness for open circuits and shorts between the security control unit and door switch. Replace the door switch.