C1563

POWER STEERING: POWER STEERING SYSTEM: C1563: DC / DC Converter IG Power Supply Voltage
C1563 - DC / DC Converter IG Power Supply Voltage

DESCRIPTION

The power steering ECU detects malfunctions in the power steering converter's IG power supply voltage based on the power steering converter's WDD communication signal (DC / DC condition notification signal). As a fail-safe function, when the IG power supply and power steering converter are malfunctioning, power assistance stops.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK POWER STEERING CONVERTER ASSEMBLY (IG TERMINAL)

(a) Disconnect the A46 converter connector.





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

Standard voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER STEERING CONVERTER ASSEMBLY Removal