Toyota 4Runner: How To Proceed With Troubleshooting

Toyota 4Runner Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Engine Immobiliser System(w/o Smart Key System) / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use these procedures to troubleshoot the engine immobiliser system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

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

3.	CRANK ENGINE FOR MORE THAN 10 SECONDS

4.	CHECK FOR DTC*

(a) Check for DTCs and note any codes that are output (See page ).

(b) Clear the DTCs (See page ).

(c) Recheck for DTCs. Try to duplicate the DTC (SFI system and engine immobiliser system) by reproducing the symptoms indicated by the DTC.

Result	Proceed to
DTC is not output	A
SFI system DTC is output	B
Engine immobiliser system DTC is output	C

GO TO SFI SYSTEM

GO TO DIAGNOSTIC TROUBLE CODE CHART

5.	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

GO TO STEP 7

6.	OVERALL ANALYSIS AND TROUBLESHOOTING*

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

(b) Terminals of ECU (See page ).

7.	ADJUST, REPAIR OR REPLACE

8.	CONFIRMATION TEST

END

Registration

REGISTRATION PROCEDURE 1. DESCRIPTION OF CODE REGISTRATION The key has 2 codes: the key code (immobiliser code) and the wireless code (recognition code). Both of these codes need to be registered ...

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Disposal
DISPOSAL CAUTION / NOTICE / HINT CAUTION: Before performing pre-disposal deployment of any SRS part, review and closely follow all applicable environmental and hazardous material regulations. Pre-disposal deployment may be considered hazardous material ...

Low Power Supply Voltage Malfunction (C1241)
DESCRIPTION If the voltage supplied to the IG1 terminal is within the DTC detection range due to malfunctions in components such as the battery and generator circuit, this DTC is stored. DTC Code DTC Detection Condition T ...

Toyota 4Runner: How To Proceed With Troubleshooting

System Diagram

Registration

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