Toyota 4Runner manuals

Toyota 4Runner: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use these procedures to troubleshoot the lighting system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP


NEXT

2.

INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

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


NEXT

3.

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

4.

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

5.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check (See page ).


(b) Terminals of ECU (See page ).


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



NEXT

6.

ADJUST, REPAIR OR REPLACE


NEXT

7.

CONFIRMATION TEST


NEXT

END

System Diagram
SYSTEM DIAGRAM ...

System Description
SYSTEM DESCRIPTION 1. AUTOMATIC LIGHT CONTROL SYSTEM (a) General When the headlight dimmer switch is in the AUTO position, the automatic light control sensor detects ambient light levels and outp ...

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Diagnosis System
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XM Tuner Malfunction (B15BA)
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