DTC 74

When the ignition switch is turned to ON, the ignition relay is activated and battery positive voltage is applied to terminal + B of the ECU. When the ignition switch is turned to OFF, the ignition relay is de-energized and the power source is cut off.

This power source energizes the suspension control actuator, height control valve, relay, indicator, each IC and sensor.

Wiring Diagram:

Inspection Procedure - Step 1:

Step 2:

Step 3:

Step 4:

Step 5: