Inspection Procedure

1. Remove the key unlock warning switch.
2. Inspect the key unlock warning switch continuity, as shown in the illustration and table.
   Fig 1: Unlock Warning Switch Terminals

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Standard: 

Fig 2: Key Unlock Warning Switch Specifications

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1. OK: GO TO NEXT STEP 
2. NG: REPLACE UN-LOCK WARNING SWITCH ASSY 

Fig 3: Un-Lock Warning Switch & Instrument Panel Circuit Specifications

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1. Disconnect the unlock warning switch and instrument panel J/B connectors.
2. Check the continuity between the terminals of the unlock warning switch (U1) and instrument panel J/B (IJ) connectors, as shown in the illustration and table.

Standard (Check for open) : 

Fig 4: Identifying Un-Lock Warning Switch & Instrument Panel Connector Terminals

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1. OK: Go to Next step 
2. NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR 

Fig 5: Front Door Courtesy Lamp Switch Specifications

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1. Remove the courtesy lamp switch.
2. Inspect the courtesy lamp switch continuity, as shown in the illustration and table.

Standard: 

Fig 6: Identifying Front Door Courtesy Lamp Switch

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1. OK: Go to Next step 
2. NG: REPLACE FRONT DOOR COURTESY LAMP SWITCH ASSY 

Fig 7: Identifying Front Door Courtesy Lamp Switch & Instrument Panel J/B Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the courtesy lamp switch and instrument panel J/B connectors.
2. Check the continuity between the terminals of the courtesy lamp switch (D7) and instrument panel J/B (ID) connectors, as shown in the illustration and table.

1. OK: REPLACE INTEGRATION RELAY 
2. NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR