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Home >> Saturn >> 2006 >> Vue Red Line, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls - 2.2L (L61) - Troubleshooting & Diagnosis) >> Fuel Injector Circuit Diagnosis >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.
Fuel Injector Circuit Diagnosis

Step Action Values Yes No
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls Connector End Views
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2 Is DTC P0201, P0202, P0203, or P0204 set? - Go to DTC P0201-P0204 Go to Step 3 
3
  1. Turn OFF the ignition.
  2. Remove the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .
  3. Disconnect the harness connector of a fuel injector.
  4. Turn ON the ignition, with the engine OFF.
  5. Probe the ignition 1 voltage circuit of a fuel injector, fuse side, with a test lamp that is connected to a good ground. Refer to Probing Electrical Connectors .
Does the test lamp illuminate?		 - Go to Step 4  Go to Step 10 
4
  1. Remove the IGN/INJ fuse.
  2. Measure the resistance from the IGN/INJ fuse to the ignition 1 voltage circuit terminal of a fuel injector with a DMM. Refer to Circuit Testing .
Is the resistance more than the specified value?		 5 ohm Go to Step 11  Go to Step 5 
5
  1. Connect the J 44603  Injector Test Lamp into each injector connector one at a time. See Special Tools .
  2. Crank the engine.
Does the test lamp flash for each injector?		 - Go to Fuel Injector Coil Test  Go to Step 6 
6 Does the test lamp remain illuminated at all times for any injector circuit? - Go to Step 8  Go to Step 7 
7 Test the control circuits of the fuel injectors for an open and for a short to voltage. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 9 
8 Test the control circuits of the fuel injectors for a short to ground. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 12 
9 Test for an intermittent and for a poor connection at the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 12 
10 Repair the open in the ignition 1 voltage circuit of the fuel injectors. Refer to Wiring Repairs .
Did you complete the repair?		 - Go to Step 13  -
11 Repair the high resistance in the ignition 1 voltage circuit of the fuel injectors. Refer to Wiring Repairs .
Did you complete the repair?		 - Go to Step 13  -
12 Replace the engine control module (ECM). Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?		 - Go to Step 13  -
13 Operate the system in order to verify the repair.
Did you correct the condition?		 - System OK Go to Step 2 
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