DESCRIPTION
The steering lock ECU determines the on/off status of the engine switch through the IG2 signal circuit.
The steering lock ECU does not lock the steering when it receives the IG2 relay on signal. This prevents the steering from being locked while the vehicle is moving.
The diagnosis information of the steering lock ECU is transmitted to the Techstream via the certification ECU as the steering lock ECU is not connected to the CAN communication system.
DTC Code |
Detection Condition |
Trouble Area |
---|---|---|
B2788 |
The IG2 input to the steering lock ECU does not match the LIN communication input. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
When the engine switch is off, the main body ECU may occasionally go into a non-active state called sleep mode. Therefore, before proceeding with the inspection, it is necessary to perform the following steps to wake up the ECU:
With the engine switch off, open the driver door. Then (with the engine switch still off) open and close any door several times at 1.5 second intervals.
NOTICE:
PROCEDURE
1. |
CHECK STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) |
(a) Disconnect the F68 steering lock ECU connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F68-1 (GND) - Body ground |
Always |
Below 1 Ω |
*a |
Front view of wire harness connector (to Steering Lock ECU) |
(c) Reconnect the F68 steering lock ECU connector. |
|
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F68-6 (IG2) - F68-1 (GND) |
Engine switch on (IG) |
11 to 14 V |
F68-6 (IG2) - F68-1 (GND) |
Engine switch off |
Below 1 V |
*a |
Component with harness connected (Steering Lock ECU) |
OK |
REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) |
NG |
CHECK FOR SHORT IN ALL HARNESSES, CONNECTORS AND COMPONENTS CONNECTED TO IG2 FUSE |
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL SHIFT LOCK CONTROL ECU SUB-ASSEMBLY
(a) Attach the 3 claws to install the shift lock control ECU to the transmission
floor shift.
(b) Connect the shift lock solenoid connector to the shift lock control ECU.
2. INSTALL IND ...
Operation Check
OPERATION CHECK
1. CHECK INITIAL CHECK FUNCTION
(a) Check the initial check function for the buzzer.
(1) When the back sonar or clearance sonar switch assembly is turned on, check
that the following occurs: 1) after 0.2 seconds, the buzzer sounds for ap ...