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 and Poor Connections in Wiring Systems.
The number below refers to the step number on the diagnostic table.
|
Step |
Action |
Values |
Yes |
No |
|---|---|---|---|---|
|
Schematic Reference: Instrument Cluster Schematics |
||||
|
1 |
Did you perform the IPC Diagnostic System Check? |
-- |
Go to Step 2 |
|
|
2 |
Does the scan tool indicate that the Fuel Tank Level Remaining parameter is greater than the specified value? |
98% |
Go to Step 3 |
Go to Diagnostic Aids |
Does the scan tool indicate that the Fuel Tank Level Remaining parameter is less than the specified value? |
3.5% |
Go to Step 6 |
Go to Step 4 |
|
|
4 |
Test the signal circuit of the fuel level sensor for an open, for a high resistance, or for a short to voltage. 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 for an open, for a high resistance, or for a short to voltage. 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 signal circuit of the fuel level sensor for an open, for a high resistance, or for a short to voltage between C405A/C405B 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, for a high resistance, or for a short to voltage between C405A/C405B 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 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 and Poor Connections and to 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 sensor. Refer to Fuel Level Sensor Replacement in Engine Controls-3.8L or to Fuel Level Sensor Replacement in Engine Controls-5.7L. Did you complete the replacement? |
-- |
Go to Step 12 |
-- |
|
11 |
Program the replacement PCM. Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement in Engine Controls-3.8L or to Powertrain Control Module (PCM) Replacement in Engine Controls-5.7L. Did you complete the replacement? |
-- |
Go to Step 12 |
-- |
|
12 |
Does the DTC reset? |
-- |
Go to Step 2 |
System OK |