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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 629 (POWER DOOR LOCK - DIAGNOSTICS)KEY LOCK-IN PREVENTION FUNCTION DOES NOT WORK PROPERLY (MANUAL OPERATION AND INTERLOCKED WITH KEY ARE (ACTIVE)INSPECTION PROCEDURE
2004 Toyota Matrix XR, FWD, Standard

Inspection Procedure

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT UN-LOCK WARNING SWITCH ASSY 
    1. Inspect the continuity of the key unlock warning switch continuity.
      Fig 1: Identifying Connector
      G02895211Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 2: Identifying Un-Lock Warning Switch Terminal Inspection Chart
      G02895212Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE UN-LOCK WARNING SWITCH ASSY 
    2. OK: Go to next step. 
  2. CHECK WIRE HARNESS 
    1. Disconnect the B6 body ECU and U1 unlock warning switch connectors.
    2. Check the continuity between the disconnected connector.

      Standard: 

      CONDITION CONTINUITY BETWEEN B6-U1

      Terminal No. Specified Condition
      B6-19 <--> U1-2 Continuity
    3. Check the continuity between the unlock warning switch disconnected connector and the body ground.

      Standard: 

      KEY UNLOCK WARNING SWITCH CONTINUITY CONDITION

      Terminal No. Specified Condition
      U1-1 <--> Body Ground Continuity
      Fig 3: Identifying Connector U-1 And B-6
      G02895213Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: Go to next step. 
  3. INSPECT FRONT DOOR COURTESY LAMP SWITCH ASSY 
    1. Inspect the continuity of the key unlock warning switch continuity.
      Fig 4: Identifying Connector
      G02895214Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 5: Identifying Front Door Courtesy Lamp Switch Terminal Inspection Chart
      G02895215Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE FRONT DOOR COURTESY LAMP SWITCH ASSY 
    2. OK: Go to next step. 
  4. CHECK WIRE HARNESS 
    1. Disconnect the B8 body ECU and D6 front door courtesy lamp switch connectors.
    2. Check the continuity between the disconnected connectors.

      Standard: 

      CONTINUITY CONDITION BETWEEN B8-D6

      Terminal No. Specified Condition
      B8-1 <--> D6-1 Continuity
      Fig 6: Identifying B-6 And D-8 Connector Terminal
      G02895216Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY 
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.