Toyota 4Runner Quiz
Audio / Visual / Telematics

How To Proceed With Troubleshooting

In this manual: Audio / Visual / Telematics
General — 25Audio / Visual / Telematics — 283Brake — 187Drivetrain — 204Power Source / Network — 79Steering — 76Suspension — 130Vehicle Exterior — 391Vehicle Interior — 693
~2min read
CAUTION / NOTICE / HINT

HINT:

Use these procedures to troubleshoot the rear view monitor system.

PROCEDURE

  1. VEHICLE BROUGHT TO WORKSHOP

NEXT

  1. CUSTOMER PROBLEM ANALYSIS

(a) Ask the customer about the problems and the conditions at the time the malfunction occurred to make sure the problem symptom was not temporarily caused by radio waves in the surrounding environment.

HINT:

The rear view monitor display may be temporarily distorted due to radio waves around the vehicle.

Problem Symptom

Cause
Both of the following conditions are met:
  • The problem symptom indicates a rear view monitor display malfunction and the problem symptom cannot be reproduced.
  • DTC C1622 is output as "Hist" only.*

The display may be temporarily distorted when the vehicle is close to an object that transmits radio waves, such as a telecommunication tower, an airport or a truck equipped with a transceiver.
  • *: DTCs output as "Hist" will not be output again after DTCs are cleared.
NEXT

  1. INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

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

NEXT

  1. CHECK FOR DTC

(a) Check for DTCs and note any codes that are output (Click here ).


(b) Clear the DTCs (Click here ).


(c) Recheck for DTCs. Try to reproduce the DTCs by simulating the conditions indicated by the DTCs (Click here ).


Result

Proceed to

No DTCs are output

A

DTCs are output

B

B

GO TO STEP 10
A

  1. PROBLEM SYMPTOM CONFIRMATION

(a) Problem symptom confirmation.

Result

Proceed to

Symptom does not occur

A

Symptom occurs

B

B

GO TO STEP 7
A

  1. SYMPTOM SIMULATION

NEXT

  1. CHECK IF SAME SYMPTOM APPEARS IN NAVIGATION SYSTEM

(a) Refer to Navigation System (See page ).


Result

Proceed to

Symptom does not appear

A

Symptom appears

B

B

FOLLOW THE NAVIGATION SYMPTOM CHART TO PERFORM TROUBLESHOOTING
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 10
A

  1. BASED ON MALFUNCTION SYMPTOM, PERFORM TROUBLESHOOTING BELOW

(a) Terminals of ECU (See page ).


NEXT

  1. ADJUST, REPAIR OR REPLACE

NEXT

  1. CONFIRMATION TEST


NEXT

END

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