DTC B1162

Precautions: Precautions for Diagnosing Trouble · Precautions for Replacing Remote Controller · Precautions for Remote Controller Disposal · Precautions for Replacing Keyless Start Control Module · Precautions for Control Systems · General safety (00)

DTC Detecting Condition and Trouble Area

DTC detecting condition	Trouble area
B1162: Steering Lock Unit Internal Defect •Steering lock unit internal failure. •Lock / Unlock operation failure.	•Steering lock unit circuit / connector •Steering lock unit •Keyless start control module

Circuit Diagram

[A]:	Keyless start control module connector (View: [a])	A2:	Steering lock unit power supply circuit 2	C2:	Steering lock unit ground circuit 2
[B]:	Steering lock unit connector (View: [b])	B1:	Steering lock unit signal circuit	1.	Steering lock unit
A1:	Steering lock unit power supply circuit 1	C1:	Steering lock unit ground circuit 1	2.	Keyless start control module

DTC Confirmation Procedure

1)Set steering wheel in straight ahead position.

2)Repeat lock / unlock operation of steering lock unit several times.

•Lock: Change ignition “ON” to “OFF” and open a door.
•Unlock: Set ignition “ON” at steering lock conditions.

DTC Troubleshooting

NOTE:

•This DTC might be detected when battery is run down or the voltage is very low.
•If ignition is set “OFF” with force applied to steering wheel, there may be a case that B1162 is detected because steering lock unit cannot be unlocked. This is a temporary malfunction and not a permanent defect.

Step	Action	Yes	No
1	Battery voltage check 1)Check that battery terminal voltage is 12 V or more. Is check result OK?	Go to Step 2.	Check battery and generator. •M16A model: —Battery: —Generator: •K14C model: —Battery: —Generator: •D16AA model: —Battery: —Generator:
2	DTC check 1)Check DTC. Is current DTC B1162 detected?	Go to Step 4.	Go to Step 3.
3	DTC recheck 1)Clear DTC. 2)Set ignition “OFF”. 3)Set steering wheel in straight ahead position. 4)Set ignition “ON”. 5)Open driver door. 6)Perform DTC Confirmation Procedure and then recheck DTC. Is current DTC B1162 detected?	Go to Step 4.	Check for intermittent trouble.
4	Steering lock unit operation check 1)Open driver door. 2)Check that ignition is “OFF”. 3)Set ignition “ON”. 4)Repeat Step 1) – 2) several times. 5)Check that steering lock does lock / unlock according to change of ignition. Is check result OK?	Check for intermittent trouble.	Go to Step 5.
5	Steering lock unit power supply circuit check 1)Set ignition “OFF”. 2)Disconnect steering lock unit connector. 3)Check for proper terminal connection to steering lock unit connector. 4)If connections are OK, check the following points. •Voltage between “A1” and “C2” is battery voltage when ignition is switched from “OFF” to “ON”. •Voltage between “A2” and “C1” is battery voltage when ignition is switched from “OFF” to “ON”. Is check result OK?	Clear DTC, and then go to Step 8.	Clear DTC, and then go to Step 6.
6	Steering lock unit ground circuit check 1)Check that voltage between each of “A1” and “A2” circuit and ground is battery voltage when ignition is switched from “OFF” to “ON”. Is check result OK?	Repair or replace “C1” and “C2” circuits.	Go to Step 7.
7	Steering lock unit power supply circuit check 1)Set ignition “OFF”. 2)Disconnect “G16” connector. 3)Check for proper terminal connection to “G16” connector. 4)If connections are OK, check the following points. •Resistance of “A1” and “A2” circuits: less than 1 Ω •Resistance between each of “A1” and “A2” circuits and ground: infinity •Resistance between each of “A1” and “A2” circuit terminal and each terminal at steering lock unit connector: infinity •Voltage of “A1” and “A2” circuits: approx. 0 V (When ignition is “ON”) Is check result OK?	Replace keyless start control module and recheck DTC.	Repair or replace defective wire harness.
8	DTC check 1)Replace steering lock unit. 2)Open driver door. 3)Perform DTC Confirmation Procedure and then recheck DTC. Is DTC B1162 still detected?	Replace keyless start control module and recheck DTC.	End. (Steering lock unit was faulty.)