Inspection Procedure
- INSPECT ENGINE SWITCH
- Disconnect the D21 switch connector.
- Connect the positive (+) lead to terminal "A" and the negative (-) lead to terminal "B" of the engine switch.
- Check if the illumination for the engine switch comes on.
OK:
ENGINE SWITCHPositive (+) Connection (Symbols) Negative (-) Connection (Symbols) Illumination Condition D21-11 (SWIL) D21-4 (COM) or D21-5 (GND) Comes on D21-12 (INDS) D21-4 (COM) or D21-5 (GND) Comes on D21-13 (INDW) D21-4 (COM) or D21-5 (GND) Comes on
- NG: REPLACE ENGINE SWITCH
- OK: Go to next step.
- CHECK WIRE HARNESS (ENGINE SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND)
- Disconnect the D44 ECU connector.
- Measure the resistance according to the value(s) in ENGINE SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND
.
Standard:
ENGINE SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUNDTester Connection (Symbols) Condition Specified condition D44-4 (INDS) - D21-12 (INDS) Always Below 1 Ω D44-13 (INDW) - D21-13 (INDW) Always Below 1 Ω D44-36 (SWIL) - D21-11 (SWIL) Always Below 1 Ω D44-4 (INDS) - Body ground Always 1 MΩ or Higher D44-13 (INDW) - Body ground Always 1 MΩ or Higher D44-36 (SWIL) - Body ground Always 1 MΩ or Higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
- OK: REPLACE POWER SOURCE CONTROL ECU