Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Inspection Procedure
- CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSY
- Measure voltage between terminals when opening the front door LH only.
Standard:
SPECIFIED CONDITIONFront door LH Tester connection Specified condition Close B8-1 (DCTY) - 2A - 8 10 - 14 V Open B8-1 (DCTY) - 2A - 8 Below 1 V
- OK: CHECK AND REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY
- NG: Go to next step.
- Measure voltage between terminals when opening the front door LH only.
- INSPECT FRONT DOOR COURTESY LAMP SWITCH ASSY (FRONT DOOR LH)
- Inspect front door courtesy lamp switch LH continuity.
- Check that the continuity exists between terminal 1 and body ground when switch is operated.
Standard:
ON (When shaft is pressed): No continuity
OFF (When shaft is not pressed): Continuity
- NG: REPLACE FRONT DOOR COURTESY LAMP SWITCH ASSY (FRONT DOOR LH)
- OK: Go to next step.
- Inspect front door courtesy lamp switch LH continuity.
- CHECK HARNESS AND CONNECTOR (BETWEEN INSTRUMENT PANEL J/B ASSY AND FRONT DOOR COURTESY LAMP SWITCH LH)
- Disconnect the connector of the multiplex network body computer.
- Check the continuity between terminal B6 - 1 (DCTY) and body ground.
Standard: There is continuity.
- NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
- OK: Go to next step.
- CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSY
- Measure voltage between terminals when opening the front door RH only.
Standard:
SPECIFIED CONDITIONFront door RH Tester connection Specified condition Close B6-11 (PCTY) - 2A - 8 (GND) 10 - 14 V Open B6-11 (PCTY) - 2A - 8 (GND) Below 1 V
- OK: CHECK AND REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY
- NG: Go to next step.
- Measure voltage between terminals when opening the front door RH only.
- INSPECT FRONT DOOR COURTESY LAMP SWITCH ASSY (FRONT DOOR RH)
- Inspect front door courtesy lamp switch RH continuity.
- Check that the continuity exists between terminal 1 and body ground when switch is operated.
Standard:
ON (When shaft is pressed): No continuity
OFF (When shaft is not pressed): Continuity
- NG: REPLACE FRONT DOOR COURTESY LAMP SWITCH ASSY (FRONT DOOR RH)
- OK: Go to next step.
- Inspect front door courtesy lamp switch RH continuity.
- CHECK HARNESS AND CONNECTOR (BETWEEN INSTRUMENT PANEL J/B ASSY AND FRONT DOOR COURETESY LAMP SWITH RH)
- Disconnect the connector of the multiplex network body computer.
- Check the continuity between terminal B6 - 11 (PCTY) and body ground.
Standard: There is continuity.
- NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
- OK: Go to next step.
- CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSY
- Measure voltage between terminals, when opening the rear door LH only.
Standard:
SPECIFIED CONDITIONRear door LH Tester connection Specified condition Close 20 (RCTY) - 2A-8 (GND) 10 - 14 V Open 20 (RCTY) - 2A-8 (GND) Below 1 V
- OK: CHECK AND REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY
- NG: Go to next step.
- Measure voltage between terminals, when opening the rear door LH only.
- INSPECT REAR DOOR COURTESY LAMP SWITCH ASSY (REAR DOOR LH)
- Inspect rear door courtesy lamp switch LH continuity.
- Check that the continuity exists between terminal 1 and body ground, when switch is operated.
Standard:
ON (When shaft is pressed): No continuity
OFF (When shaft is not pressed): Continuity
- NG: REPLACE REAR DOOR COURTESY LAMP SWITCH ASSY (REAR DOOR LH)
- OK: Go to next step.
- Inspect rear door courtesy lamp switch LH continuity.
- CHECK HARNESS AND CONNECTOR (BETWEEN INSTRUMENT PANEL J/B ASSY AND REAR DOOR COURTESY LAMP SWITCH LH)
- Disconnect the connector of the multiplex network body computer.
- Check the continuity between terminal 20 (RCTY) and body ground.
Standard: Continuity exists.
- NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
- OK: Go to next step.
- CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSY
- Measure voltage between terminals when opening the rear door RH only.
Standard:
SPECIFIED CONDITIONRear door RH Tester connection Specified condition Close 20 (RCTY) - 2A-8 (GND) 10 - 14 V Open 20 (RCTY) - 2A-8 (GND) Below 1 V
- OK: CHECK AND REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY
- NG: Go to next step.
- Measure voltage between terminals when opening the rear door RH only.
- INSPECT REAR DOOR COURTESY LAMP SWITCH ASSY (REAR DOOR RH)
- Inspect rear door courtesy lamp switch RH continuity.
- Check that the continuity exists between terminal 1 and body ground when switch is operated.
Standard:
ON (When shaft is pressed): No continuity
OFF (When shaft is not pressed): Continuity
- NG: REPLACE REAR DOOR COURTESY LAMP SWITCH ASSY (REAR DOOR RH)
- OK: REPAIR OR REPLACE HARNESS OR CONNECTOR
- Inspect rear door courtesy lamp switch RH continuity.
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.