AFS

DTC C0800 (AFS)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.



DTC Descriptors
DTC C0800 03
- Device Power 1 Circuit Voltage Below Threshold


DTC C0800 07
- Device Power 1 Circuit Voltage Above Threshold




Diagnostic Fault Information






Circuit/System Description

The active front steering control module (AFS) checks whether the system voltage is with in the normal range. This diagnostic compares power state with the engine running state received over serial data to determine whether or not there is an power ground short fault.


Conditions for Running the DTC

The engine is running.


Conditions for Setting the DTC

The engine is running, and the AFS control module detects that the device voltage is less than 9.2 volts or greater than 17 volts


Actions Taken When DTC Sets

* DTC is stored in memory.
* The active front steering warning indicator will be displayed on the driver information center (DIC).
* Steering assist is set to a default level.



Conditions for Clearing the MIL/DTC

* When the condition for the DTC is no longer present.
* The AFS control module automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.



Diagnostic Aids

* A high or low voltage value in multiple modules indicates a concern in the charging system.
* Overcharging with a battery charger or jump starting can cause this DTC to set.



Reference Information
Schematic Reference

Power Steering Schematics (Electrical Diagrams)
Description and Operation

Active Front Steering Description and Operation (Active Front Steering Description and Operation)
Connector End View Reference

Component Connector End Views (Connector Views)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference




Control Module References (Programming and Relearning) for Scan Tool Information


Circuit/System Verification

1. Engine running, measure and record the voltage at the battery terminals.
2. Verify that the battery voltage is 12.5-15.5 volts.

• If the battery voltage is not within the specified range, refer to Charging System Test (Charging System Test) .

3. Engine running, observe the scan tool AFS battery positive voltage parameter.
4. The battery terminal and AFS parameter should not differ by more than 2 volts.



Circuit/System Testing

1. Verify that the DTC is set as current.
2. Ignition OFF, disconnect the harness connectors at the AFS module.
3. Ignition OFF, test for less than 3.0 ohms between the ground circuit X2 terminal 1 and X3 terminal 3 to ground.

• If greater than the specified value, test the affected ground circuit for an open/high resistance.

4. Ignition ON, verify a test lamp illuminates between the battery positive voltage circuits X2 terminal 2 and X3 terminal 1 and ground.

• If the test lamp did not illuminate, test the affected battery positive voltage circuit for a short to ground or an open/high resistance.

5. If all circuits test normal, replace the AFS module.



Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.


Control Module References (Programming and Relearning) for AFS control module replacement, setup, and programming