Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT BATTERY
1. Check the battery voltage.
  Standard voltage: 11 to 14 V
NG: RECHARGE OR REPLACE BATTERY

OK: GO TO NEXT STEP

READ VALUE OF INTELLIGENT TESTER (IG VOLTAGE)

Using the DATA LIST, check for proper functioning of the IG voltage.

Skid control ECU assembly

DATA LIST

Item	Measurement Item/Range (Display)	Normal Condition	Diagnostic Note
IG VOLTAGE	ECU IG power voltage/UNDER or NORMAL or OVER	-	-

OK: Display is NORMAL

OK: REPLACE SKID CONTROL ECU ASSEMBLY

NG: GO TO NEXT STEP

CHECK WIRE HARNESS (SKID CONTROL ECU ASSEMBLY - BATTERY AND BODY GROUND)

Measure the voltage of the wire harness side connectors.

Standard voltage

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
A42-6 (IG1) - A42-17 (GND4)	Ignition switch ON	10 to 14 V
A42-6 (IG1) - A42-8 (GND3)	Ignition switch ON	10 to 14 V
A42-6 (IG1) - A41-6 (GND2)	Ignition switch ON	10 to 14 V
A42-6 (IG1) - A41-31 (GND1)	Ignition switch ON	10 to 14 V
A42-6 (IG1) - Body ground	Ignition switch ON	10 to 14 V

Fig 1: Identifying Skid Control ECU Assembly Terminals

Measure the resistance of the wire harness side connectors.

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
A42-17 (GND4) - Body ground	Always	Below 1 Ω
A42-8 (GND3) - Body ground	Always	Below 1 Ω
A41-6 (GND2) - Body ground	Always	Below 1 Ω
A41-31 (GND1) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: GO TO NEXT STEP

INSPECT FUSE (ECU-IG1)
1. Remove the ECU-IG1 fuse from the cowl side junction block LH.
2. Measure the resistance of the fuse.
  Standard resistance: Below 1 Ω
NG: REPLACE FUSE

OK: REPLACE SKID CONTROL ECU ASSEMBLY