Pinout Values and Diagnostic Parameters

HORN: HORN SYSTEM: TERMINALS OF ECU

1. CHECK FRONT LIGHT ECU (FRONT CONTROLLER)





(a) Disconnect the A50 and A52 ECU connectors.

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





If the result is not as specified, there may be a malfunction on the wire harness side.

(c) Reconnect the A50 and A52 ECU connectors.

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





If the result is not as specified, the ECU may have a malfunction.

2. CHECK STEERING PAD SWITCH ASSEMBLY WITH MODULATOR (STEERING PAD ECU)





(a) Disconnect the z74 ECU connector.

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





If the result is not as specified, there may be a malfunction on the wire harness side.