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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 965 (Engine Controls Diagnosis - 6.6L (Lb7) (DTCS P0016 To P0236)) >> Diagnosis >> DTC P0182 >> Test Description

Test Description

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 3:  If DTC P0182 can only be repeated by duplicating the Failure Records, refer to Temperature vs Resistance. The table may be used to test the fuel temperature sensor at various temperatures in order to evaluate the possibility of a shifted sensor that may be shorted above or below a certain temperature. If this is the case, replace the fuel temperature sensor. If the fuel temperature sensor appears to be OK, the malfunction is intermittent. Refer to Diagnostic Aids.
  2. 5:  When testing fuel temperature sensor signal circuit for a short to ground, you may need to inspect for continuity between all other PCM circuits.
DTC P0182- Fuel Temperature Sensor Circuit Low Voltage

Step Action Values Yes No
Schematic Reference:  Engine Controls Schematics 
Connector End View Reference:  Engine Control Module (ECM) Connector End Views  or  Engine Controls Connector End Views 
1 Did you perform the Diagnostic System Check-Engine Controls? - Go to Step 2  Go to Diagnostic System Check - Engine Controls
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Observe the fuel sensor temperature display.
Does the scan tool indicate that the fuel sensor temperature is greater than the specified value?		 120° C (248° F) Go to Step 4  Go to Step 3 
3 
  1. Observe the Freeze Frame/Failure Records data 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 as specified in the supporting text or as close to the Freeze Frame/Failure Records data that you observed.
Does the DTC reset?		 - Go to Step 4  Go to Diagnostic Aids
4
  1. Remove the air cleaner outlet duct from the air intake pipe.
  2. Disconnect the fuel temperature sensor.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the fuel temperature sensor parameter.
Does the scan tool indicate that the fuel temperature sensor is less than the specified value?		 -30° C (-86° F) Go to Step 6  Go to Step 5 
5 
  1. Turn OFF the ignition.
  2. Disconnect the PCM.
  3. Test the signal circuit of the fuel temperature sensor for a short to ground or a short to any low reference circuit. Refer to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 8  Go to Step 7 
6 Replace the fuel temperature sensor. Refer to Fuel Rail Temperature (FRT) Sensor Replacement .
Did you complete the replacement?		 - Go to Step 8  -
7 Replace the ECM. Refer to Engine Control Module (ECM) Replacement .
Did you complete the replacement?		 - Go to Step 8  -
8
  1. Use the scan tool in order to clear the DTCs.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC run and pass?		 - Go to Step 9  Go to Step 2 
9 With a scan tool observe the stored information, Capture Info.
Does the scan tool display any DTCs that you have not diagnosed?		 - Go to Diagnostic Trouble Code (DTC) List System OK
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