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Home >> Pontiac >> 2005 >> G6 Base >> Repair and Diagnosis >> Steering >> Power Steering >> Power Steering System >> Diagnostic Information and Procedures >> DTC C0899 >> Test Description

Test Description

The number below refers to the step number on the diagnostic table.

  1. 2:  This step tests if the voltage malfunction exists in the power steering system.
DTC C0899

Step Action Values Yes No
Schematic Reference: Power Steering System Schematics 
Connector End Views Reference: Power Steering System Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2 
  1. Turn ON the ignition, with the engine OFF.
  2. With a scan tool, observe the Battery Voltage parameter in the Power Steering Data List.
Does the scan tool indicate that the Battery Voltage parameter is greater than the specified value?
9 V Go to Testing for Intermittent Conditions and Poor Connections Go to Step 3 
3 Inspect for poor connections at the underhood fuse block stud ring terminal. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
- Go to Step 10  Go to Step 4 
4 Inspect for poor connections at the ground terminal G103. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
- Go to Step 10  Go to Step 5 
5 Inspect for poor connections at the 80-amp EPS fuse in the underhood fuse block. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
- Go to Step 10  Go to Step 6 
6 Inspect for poor connections at the power steering control module (PSCM) harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .
Did you find and correct the condition?
- Go to Step 10  Go to Step 7 
7 Test the battery positive voltage circuit of the PSCM for a high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
- Go to Step 10  Go to Step 8 
8 Test the ground circuit of the PSCM for a high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
- Go to Step 10  Go to Step 9 
9 Replace the power steering motor and module assembly. Refer to Motor Replacement - Power Steering Assist (EPS) .
Did you complete the replacement?
- Go to Step 10  -
10
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC.
Does DTC C0899 reset?
- Go to Step 2  System OK