C1568

POWER STEERING: POWER STEERING SYSTEM: C1568: DC-DC Converter Malfunction
C1568 - DC-DC Converter Malfunction

DESCRIPTION

As a fail-safe function, when the power steering converter assembly is malfunctioning, power assistance is limited/stopped.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (POWER STEERING CONVERTER PIG POWER SUPPLY)

(a) Disconnect the n2 power steering 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 -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (POWER STEERING CONVERTER IG POWER SUPPLY)

(a) Disconnect the n1 power steering 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 -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU PIG POWER SUPPLY)

(a) Disconnect the A44 power steering ECU connector.

(b) Disconnect the n3 power steering converter connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. CHECK POWER STEERING SYSTEM (OPERATION)

(a) Turn the power switch ON (READY) and check whether the power assistance operates.

Result

B -- GO TO ACTIVE STABILIZER SUSPENSION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) How To Proceed With Troubleshooting

A -- REPLACE POWER STEERING CONVERTER ASSEMBLY Removal