Diagnostic Aids
Use the Freeze Frame and/or Failure Records data in order to locate an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or Failure Records data may aid in determining the number of miles since the DTC set. The Fail Counter and Pass Counter can also aid in determining the number of ignition cycles that the diagnostic reported a pass and/or fail. Operate the vehicle within the same freeze frame conditions, RPM, load, vehicle speed, temperature, etc. This will isolate when the DTC failed.
Refer to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS in Wiring Systems.
DTC P0463
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Instrument Cluster Schematics | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 |
|
250 Ω | Go to Step 6 | Go to Step 3 |
| 3 |
|
0 V | Go to Step 6 | Go to Step 4 |
| 4 | Test the fuel level sensor signal circuit between C413 and the powertrain control module (PCM) for an open, a short to voltage, or high resistance. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 5 |
| 5 | Test the low reference circuit of the fuel level sensor between C413 and the PCM for an open, or for a high resistance. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 9 |
| 6 | Test the fuel level sensor signal circuit for an open, for a high resistance, or for a short to voltage between C413 and the fuel level sensor. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 7 |
| 7 | Test the low reference circuit of the fuel level sensor for an open, or for a high resistance between C413 and the fuel level sensor. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 8 |
| 8 | Inspect for poor connections at the harness connector of the fuel level sensor. Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 10 |
| 9 | Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections
and toConnector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 11 |
| 10 | Replace the fuel level sensor. Refer to Fuel Level Sensor Replacement (Malibu Sedan)
and Fuel Level Sensor Replacement (Malibu MAXX)
in Engine Controls - 2.2L or to Fuel Level Sensor Replacement (Malibu Sedan)
and Fuel Level Sensor Replacement (Malibu MAXX)
in Engine Controls - 3.5L. Did you complete the replacement? |
- | Go to Step 12 | - |
| 11 | Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement
in Engine Controls - 2.2L or to Powertrain Control Module (PCM) Replacement
in Engine Controls - 3.5L. Did you complete the replacement? |
- | Go to Step 12 | - |
| 12 |
|
- | Go to Step 2 | System OK |