DTC 78

DTC C15C7/78 DC Motor Power Source Voltage Malfunction
DTC C15C8/79 Power Supply Relay Failure

DESCRIPTION
The steering control ECU monitors PIG (motor power source voltage) and detects a malfunction in the power supply relay (located inside the steering control ECU). If the steering control ECU detects a malfunction, it will turn on the master warning light, store these DTCs, and stop VGRS operation.

DTC DETECTION CONDITION:

WIRING DIAGRAM:

CAUTION: The fault may be intermittent. Check harnesses and connectors thoroughly and retest.

INSPECTION PROCEDURE

Steps 1-3:

Step 3 (Continued):