Last Modified: 6-7-2017 6.8:8.0.40 Doc ID: RM0000017SN002X
Model Year Start: 2007 Model: Land Cruiser Prod Date Range: [08/2006 -           ]
Title: ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: Diagnosis Circuit; 2007 MY Land Cruiser [08/2006 -        ]

Diagnosis Circuit

DESCRIPTION

This circuit sends a signal to the ECU that outputs DTC.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

INSPECT DLC3 TERMINAL VOLTAGE

(a) Turn the ignition switch ON.

(b) Measure the voltage of the D7 connector.

Standard voltage:

Tester Connection

Specified Condition

4 (CG) - 7 (SIL)

10 to 14 V

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE

NG

2.

CHECK WIRE HARNESS (TRANSPONDER KEY ECU ASSEMBLY - DLC3 AND BODY GROUND)

(a) Disconnect the T19 ECU connector.

(b) Disconnect the D7 connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:

Tester Connection

Specified Condition

T19-9 (D) - D7-7 (SIL)

Below 1 Ω

D7-4 (CG) - Body ground

T19-9 (D) or D7-7 (SIL) - Body ground

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

REPLACE TRANSPONDER KEY ECU ASSEMBLY