Inspection Procedure

INSPECT FUSE (MPX-B1, AM2, STR LOCK, D/C CUT)
1. Remove the MPX-B1, AM2 and STR LOCK fuses from the passenger side J/B.
2. Remove the D/C CUT fuse from the FL block.
3. Measure the resistance of the fuse.
Standard: Below 1 Ω

NG: REPLACE FUSE

OK: Go to next step

CHECK WIRE HARNESS (STEERING LOCK ECU - BATTERY AND BODY GROUND)

Disconnect the S46 ECU connector.
Measure the resistance and voltage of the wire harness side connector.

Standard:

STEERING LOCK ECU - BATTERY AND BODY GROUND - RESISTANCE TABLE

Tester connection	Condition	Specified condition
S46-1 (CPUB) - Body ground	Always	10 to 14 V
S46-2 (IG2) - Body ground	Ignition switch OFF -> ON	0 V -> 10 to 14 V
S46-10 (+B) - Body ground	Always	10 to 14 V
S46-9 (GND) - Body ground	Always	Below 1 Ω

Fig 1: Checking Wire Harness (Steering Lock ECU - Battery & Body Ground)

G03003091

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE STEERING LOCK ECU