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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> DTC P0462 >> Test Description

Test Description

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

  1. 3:  This step tests for the proper operation of the circuit in the high voltage range.
DTC P0462

Step Action Values Yes No
Schematic Reference: Instrument Cluster Schematics 
Connector End View References: Master Electrical Component List
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe one of the following fuel level parameters:
    • Fuel Level Sensor parameter in the powertrain control module (PCM) Enhanced EVAP data list - gas only.
    • Fuel Level Sensor parameter in the PCM Fuel data list - 6.6L diesel only.
Does the scan tool indicate that the Fuel Level Sensor parameter is less than the specified value?		 0.5 V Go to Step 3  Go to Diagnostic Aids
3 
  1. Turn OFF the ignition.
  2. Disconnect C101.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the Fuel Level Sensor parameter.
Does the scan tool indicate that the Fuel Level Sensor parameter is greater than the specified value?		 4.5 V Go to Step 5  Go to Step 4 
4 Test the signal circuit of the fuel level sensor for a short to ground. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 10  Go to Step 7 
5 Test the signal circuit of the fuel level sensor for a short to ground between C101 and the fuel level sensor. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 10  Go to Step 6 
6 Inspect for poor connections at the harness connector of the fuel level sensor. 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 8 
7 Inspect for poor connections at the harness connector of the PCM. 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 9 
8 Replace the fuel level sensor. Refer to the following procedures:
Did you complete the replacement?		 - Go to Step 10  -
9 Replace the PCM. Refer to Control Module References for replacement, setup, and programming.
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 the DTC reset?		 - Go to Step 2  System OK
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