DTC C0475
Diagnostic Instructions
DTC Descriptors
| DTC C0475 00: Electric Steering Motor
Circuit Malfunction |
| DTC C0475 59: Electric Steering Motor
Circuit Protection Time-Out |
Circuit/System Description
C0475 00
The power steering control module continuously monitors the voltage
and current levels being commanded to the 3-phase steering assist
motor. The power steering control module compares the desired and
actual current levels to detect malfunctions in the internal power
steering assist motor circuits.
C0475 59
The power steering control module continuously monitors the thermal
cycle counter of the steering gear. If the thermal cycle counter
exceeds the maximum allowable limit, the steering gear has reached
the end of its predetermined lifecycle and must be replaced.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
C0475 00
The power steering control module detects a short to ground, short
to voltage, or an open/high resistance on any of the internal power
steering assist motor circuits.
C0475 59
The power steering control module detects the thermal cycle counter
has exceeded the maximum allowable limit indicating that the whole
steering gear system must be replaced.
Action Taken When the DTC Sets
| • |
The DTC is stored in
memory. |
| • |
The driver information center
displays the SERVICE POWER STEERING warning message. |
Conditions for Clearing the DTC
C0475 00
| • |
A current DTC will clear on
the next malfunction free ignition cycle. |
| • |
A history DTC will clear after
40 consecutive malfunction free ignition cycles. |
C0475 59
This DTC cannot be cleared. The power steering system must be
replaced.
Reference Information
Schematic Reference
Power Steering Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Power Steering System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
C0475 00
| 1. |
Ignition OFF, disconnect the
X1 harness connector at the K43 Power Steering Control
Module. |
| 2. |
Test for less than 1 Ω
between the ground circuit terminal 1 and ground. |
| ⇒ |
If greater than the specified range, test the
ground circuit for an open/high resistance. |
| 3. |
Ignition ON, verify that a
test lamp illuminates between the B+ circuit terminal 2 and
ground. |
| ⇒ |
If the test lamp does not illuminate, test the B+
circuit for a short to ground or an open/high resistance. |
| 4. |
If all circuits test normal,
replace the K43 Power Steering Control Module. |
C0475 59
Verify that DTC C0475 59 is not set.
If the DTC is set, replace the steering gear.
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
