STEERING LOCK UNIT INSPECTION

id091400701300

Note

• When removing the lower column cover, it is necessary to rotate the steering wheel.

• If any door is opened/closed with the ignition switched OFF, the steering wheel will lock. Perform the procedure from Steps 1-3 so that the steering wheel will not be locked.

1. Switch the ignition ON (engine off or on).

2. Open the front driver-side door.

3. Switch the ignition off.

4. Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

5. Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION.)

6. Verify that the voltages of each of the terminals are as indicated in the terminal voltage table (reference).

• If the voltage is not as specified in the terminal voltage table (reference), inspect the parts under Inspection item(s).

― If the system does not work normally even though the inspection items are normal, replace the steering lock unit. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

Terminal voltage table (reference)

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Terminal

Signal name

Connected to

Measurement conditions

Voltage (V)

Inspection item (s)

A

GND

Body ground

Under any condition

Approx. 0

•  GND point

•  Related wiring harness

B

CAN-HI

Climate control unit

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

C

—

—

—

—

—

D

CAN-LO

Climate control unit

Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.

E

GND_ESCL

Body control module (BCM)

Steering lock is operated with ignition switched OFF

1.0 or less

•  Body control module (BCM)

•  Related wiring harness

Except above

Because this terminal is for communication, examination using terminal voltage inspection is not possible.

F

—

—

—

—

—

G

—

—

—

—

—

H

PWR_ESCL

Body control module (BCM)

Steering lock is operated with ignition switched OFF

B+

•  Body control module (BCM)

•  Related wiring harness

Except above

Because this terminal is for communication, examination using terminal voltage inspection is not possible.

Terminal	Signal name	Connected to	Measurement conditions	Voltage (V)	Inspection item (s)
A	GND	Body ground	Under any condition	Approx. 0	• GND point • Related wiring harness
B	CAN-HI	Climate control unit	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
C	—	—	—	—	—
D	CAN-LO	Climate control unit	Because this terminal is for communication, integrity determination using terminal voltage inspection is not possible.
E	GND_ESCL	Body control module (BCM)	Steering lock is operated with ignition switched OFF	1.0 or less	• Body control module (BCM) • Related wiring harness
E	GND_ESCL	Body control module (BCM)	Except above	Because this terminal is for communication, examination using terminal voltage inspection is not possible.	• Body control module (BCM) • Related wiring harness
F	—	—	—	—	—
G	—	—	—	—	—
H	PWR_ESCL	Body control module (BCM)	Steering lock is operated with ignition switched OFF	B+	• Body control module (BCM) • Related wiring harness
H	PWR_ESCL	Body control module (BCM)	Except above	Because this terminal is for communication, examination using terminal voltage inspection is not possible.	• Body control module (BCM) • Related wiring harness