Vehicle Exterior

How To Proceed With Troubleshooting

~1min read
CAUTION / NOTICE / HINT

HINT:

  • Use these procedures to troubleshoot the lighting system.
  • *: Use the Techstream.
PROCEDURE
  1. VEHICLE BROUGHT TO WORKSHOP

NEXT
  1. INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

NEXT
  1. CHECK FOR DTC*

(a) Check for DTCs (See page ).


(b) Clear the DTCs (See page ).


(c) Recheck for DTCs (See page ).


Result

Proceed to

DTC output does not reoccur

A

DTC output reoccurs

B


B

GO TO STEP 6

A
  1. PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table (See page
).

Result

Proceed to

Fault is not listed in problem symptoms table

A

Fault is listed in problem symptoms table

B


B

GO TO STEP 6

A
  1. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check (See page ).


(b) Terminals of ECU (See page ).


(c) Data List / Active Test (See page ).


NEXT
  1. ADJUST, REPAIR OR REPLACE

NEXT
  1. CONFIRMATION TEST


NEXT

END

Test yourself

A quick Toyota 4Runner quiz: every answer comes with an explanation and a link to the manual page.