C15A1

STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: C15A1/61: Actuator Malfunction
C15A1/61 - Actuator Malfunction

DESCRIPTION

The steering control ECU drives the actuator while the steering wheel is turned to set the gear ratio. It detects the current flowing into the actuator motor driving circuit.

If the steering control ECU detects excessive current, it will store DTC C15A1/61, turn on the master warning light, and stop VGRS operation.





WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
When DTC C15A2/62 is output, a short circuit inside the steering actuator or inside the steering control ECU is suspected.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR)





(a) Disconnect the A43 steering control ECU connector.

(b) Disconnect the z15 steering actuator connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:





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

2. CHECK STEERING ACTUATOR

(a) Disconnect the A43 steering control ECU connector.





HINT
The resistance must be measured after the steering actuator connector is connected.

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

Standard resistance:





NG -- REPLACE STEERING ACTUATOR (POWER STEERING GEAR ASSEMBLY) Removal

OK -- REPLACE STEERING CONTROL ECU Removal