B2788

STEERING COLUMN: STEERING LOCK SYSTEM: B2788: IG2 Signal Malfunction
B2788 - IG2 Signal Malfunction

DESCRIPTION

The steering lock ECU receives IG2 relay signals. Receiving the signals, the steering lock ECU determines that the vehicle is moving. The steering lock ECU does not lock the steering when it receives an IG2 relay ON signal (to prevent the steering from being locked while the vehicle is moving).





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT IGNITION RELAY NO. 2

(a) Remove the IG2 relay from the engine room R/B No.2.





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

Resistance:





NG -- REPLACE IGNITION RELAY NO. 2
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - BODY GROUND)

(a) Disconnect the K28 connector from the steering lock actuator assembly.





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

Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - BATTERY)

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





Voltage:





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

Resistance:





*: This measurement is performed with the engine switch off to check for a battery voltage short in the IG2 circuit.

OK -- REPLACE STEERING LOCK ACTUATOR ASSEMBLY

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (STEERING LOCK ACTUATOR ASSEMBLY - BATTERY)