DESCRIPTION

The steering lock ECU sends an unlock position signal to the main body ECU. On receiving the signal, the main body ECU permits an engine start. This prevents the engine from being started with the steering locked.

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.

PROCEDURE

(a) 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