DESCRIPTION

The main body ECU supplies the power to activate the motor of the steering lock actuator assembly.

The diagnosis information of the steering lock ECU is transmitted to the Techstream via the certification ECU (smart key ECU assembly) as the steering lock ECU is not connected to the CAN communication system.

WIRING DIAGRAM

INSPECTION PROCEDURE

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:

If the steering lock actuator assembly (steering lock ECU) is replaced, with the engine switch off and the shift lever in P, open and close the driver side door to record the current lock position into the steering lock ECU. If this is not performed, the engine may not start.

PROCEDURE

(a) Check the problem symptom of the steering lock system.

Result

A

(a) Use the Data List to check if the steering lock command is functioning properly.

Smart Access

OK:

YES is displayed on the Techstream screen.

OK

(a) Immediately after turning the engine switch on (IG), measure the voltage between terminals E26-3 (IGE) and E26-1 (GND) of the steering lock ECU.

Result

A

(a) Disconnect the E26 steering lock ECU connector.

(b) Disconnect the E1 main body ECU connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

(a) Move the shift lever to P.

(b) Turn the engine switch off.

(c) Open the driver side door.

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

OK

(a) Disconnect the E26 steering lock ECU connector.

(b) Disconnect the E1 main body ECU connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK