ECU Power Source Circuit

ECU Power Source Circuit

DESCRIPTION

When the engine switch is on (IG), the driver side junction block AIRSUS relay turns ON, and power is supplied to the suspension control ECU.

Wiring Diagram:

Step 1:

Step 1(Continued)-2:

Step 3-4:

Step 4(Continued)-6:

Step 7:

INSPECTION PROCEDURE

NOTE:
- Before performing troubleshooting, inspect the connectors of related circuits.
- Before replacing the suspension control ECU, perform all of the following again: 1) symptom simulation; 2) DTC inspection; and 3) intelligent tester or Techstream inspection (Data List or Active Test). If no malfunctions are found in other areas, replace the suspension control ECU.
- If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration must be performed.