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Home >> Chevrolet >> 2005 >> Optra5 LS, Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel, Gages, And Console >> Diagnostic Information and Procedures >> DTC P0463 (w/Delphi Controller) >> Test Description

Test Description

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

  1. 2:  This step determines if the fault is present.
Step Action Value Yes No
Schematic Reference: Instrument Cluster Schematics 
Connector End View Reference: Instrument Panel, Gages, and Console Connector End Views 
1 Did you perform the Diagnostic System Check - Instrument Cluster? - Go to Step 2  Go to Diagnostic System Check - Instrument Cluster 
2 
  1. Turn ON the ignition, with the engine OFF.
  2. Observe the Fuel Level Sensor voltage parameter with a scan tool.
Is the voltage parameter less than the specified value?		 0.25 V Go to Step 4  Go to Step 3 
3
  1. Observe the Freeze Frame/Failure Records for this DTC.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 4  Go to Diagnostic Aids
4
  1. Disconnect the fuel level sensor through the access panel under the rear seat.
  2. Connect a 3-amp fused jumper wire between the signal circuit of the fuel level sender and the low reference circuit of the fuel level sender female terminal side.
  3. Turn ON the ignition, with the engine OFF.
  4. Observe the Fuel Level Sensor voltage parameter with a scan tool.
Is the voltage more than the specified value?		 0.25 V Go to Step 8  Go to Step 5 
5 Jumper the fuel level sensor signal circuit to a known good ground.
Is the voltage more than the specified value?		 0.25 V Go to Step 7  Go to Step 6 
6 Test the signal circuit of the fuel level sensor for an open, a high resistance, or a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Step 8 
7 Test the low reference circuit of the fuel level sensor for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Step 9 
8 Test for shorted terminals and poor connections at the fuel level sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Step 10 
9 Test for shorted terminals and poor connections at the engine control module (ECM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 12  Go to Step 11 
10 Replace the fuel level sender assembly. Refer to one of the following:
Did you complete the replacement?		 - Go to Step 12  -
11 Replace the control module. Refer to one of the following:
Did you complete the replacement?		 - Go to Step 12  -
12
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 2  Go to Step 13 
13 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?		 - System OK
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