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Home >> Suzuki >> 2012 >> Equator Base >> Repair and Diagnosis >> Body & Frame >> Glass/Windows/Mirrors >> Diagnostic Information and Procedures >> Door Switch Circuit Check [Crew Cab] >> Diagnosis Procedure
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Diagnosis Procedure

Regarding Wiring Diagram information, refer to POWER WINDOW SYSTEM: WIRING DIAGRAM [CREW CAB] .

DIAGNOSIS PROCEDURE

Step Action YES NO
1  CHECK DOOR SWITCHES INPUT SIGNAL 
With SDT
Check door switches ("DOOR SW-DR", "DOOR SW-AS") in Data list mode with SDT. Refer to [SDT FUNCTION (BCM - DOOR LOCK) ]
  • When any doors are open:

    DOOR SW-DR: ON 

    DOOR SW-AS: ON 

  • When any doors are closed:

    DOOR SW-DR: OFF 

    DOOR SW-AS: OFF 


Without SDT
Check voltage between BCM connector M18 or M19 terminals 12, 47 and ground.
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Is the inspection result normal? 		 Door switch circuit is OK. GO TO 2
2  CHECK DOOR SWITCH CIRCUIT 
  1. Turn ignition switch OFF.
  2. Disconnect BCM.
G06443637Courtesy of SUZUKI OF AMERICA CORP.

  1. 3. Check continuity between door switch connector B8 (Front LH), B108 (Front RH) terminal 2 and BCM connector M18, M19 terminals 12, and 47.

    2 - 47: Continuity should exist. 

    2 - 12: Continuity should exist. 

  2. 4. Check continuity between door switch connector B8 (Front LH), B108 (Front RH) terminal 2 and ground.

    2 - Ground: Continuity should not exist. 


Is the inspection result normal? 		 GO TO 3 Repair or replace harness.
3  CHECK DOOR SWITCHES 
  1. Check continuity between door switch terminals.
G06443639Courtesy of SUZUKI OF AMERICA CORP.

Is the inspection result normal? 		 Replace BCM. Refer to [BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION ] Replace door switch.
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