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Home >> Saturn >> 2004 >> Ion 1 Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays, Gauges And Console >> Diagnostic Information and Procedures >> DTC P0463 >> Test Description

Test Description

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

  1. 3:  Tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.
DTC P0463

Step Action Values Yes No
Schematic Reference: Instrument Cluster Schematics 
1 Did you perform the Diagnostic System Check - Instrument Cluster? - Go to Step 2  Go to Diagnostic System Check - Instrument Cluster 
2
  1. Disconnect the C406.
  2. Connect a DMM between the fuel level sensor signal circuit and the low reference circuit on the male terminal side.
  3. Measure the resistance.
Does the DMM indicate that the resistance is greater than the specified value?		 250 Ω Go to Step 6  Go to Step 3 
3 
  1. Connect the DMM between the fuel level sensor signal circuit on the female terminal side and a good ground.
  2. Measure the voltage.
Does the DMM indicate that the voltage is greater than the specified value?		 0 V Go to Step 6  Go to Step 4 
4 Test the signal circuit of the fuel level sender between C406 and the engine control module (ECM)/powertrain control module (PCM) 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 sender between C406 and the ECM/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 signal circuit of the fuel level sender for an open, for a high resistance, or for a short to voltage between C406 and the fuel level sender. 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 sender for an open or for a high resistance between C406 and the fuel level sender. 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 sender. 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 ECM/PCM. 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 11 
10 Replace the fuel level sender. Refer to Fuel Level Sensor Replacement in Engine Controls - 2.2L (L61) or to Fuel Level Sensor Replacement in Engine Controls - 2.0L (LSJ).
Did you complete the replacement?		 - Go to Step 12  -
11
IMPORTANT: Program the replacement ECM/PCM.
Replace the ECM/PCM. Refer to Engine Control Module (ECM) Replacement in Engine Controls - 2.2L (L61) or to Powertrain Control Module (PCM) Replacement in Engine Controls - 2.0L (LSJ).Did you complete the replacement?		 - Go to Step 12  -
12
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 - Go to Step 2  System OK
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