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Home >> Isuzu >> 2007 >> Ascender RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.2L - DTC P0135 To DTC P0420 >> DTC P0366 >> Test Description
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Test Description

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

  1. 2:  This step verifies that the condition is present.
  2. 5:  This step detects if there is electromagnetic interference (EMI) on the CMP sensor circuits.
DTC P0366

Step Action Yes No
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Powertrain Control Module Connector End Views or 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 
  1. Turn ON the ignition, with the engine OFF.
  2. Clear the DTCs with a scan tool.
  3. Start the engine.
  4. Observe the DTC information with a scan tool.
Did DTC P0366 fail this ignition?		 Go to Step 3  Go to Step 4 
3 Did any other DTCs fail this ignition cycle? Go to Diagnostic Trouble Code (DTC) List - Vehicle Go to Step 5 
4
  1. Observe the Freeze Frame/Failure Records 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. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 Go to Step 5  Go to Testing for Intermittent Conditions and Poor Connections
5  Inspect the camshaft position (CMP) sensor circuits for the following conditions:
  • Routed too close to the ignition coils
  • Routed too close to after-market electrical equipment
  • Routed too close to solenoids, relays and motors

Did you find and correct the condition?		 Go to Step 10  Go to Step 6 
6 Test for an intermittent and for a poor connection at the CMP sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 10  Go to Step 7 
7 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 10  Go to Step 8 
8
  1. Remove the CMP sensor. Refer to Camshaft Position Sensor Replacement .
  2. Inspect the CMP sensor and the camshaft reluctor wheel for the following conditions:
    • Incorrect sensor installation
    • A cracked or broken sensor
    • The sensor coming in contact with the reluctor wheel
    • Excessive air gap between the reluctor wheel and the sensor
    • Foreign material passing between the sensor and the camshaft reluctor wheel
    • Missing teeth in the camshaft reluctor wheel
  3. If you find a condition with the CMP sensor or the camshaft reluctor wheel, refer to Camshaft Position Exhaust Actuator Replacement or Camshaft Position Sensor Replacement .
Did you find and correct the condition?		 Go to Step 10  Go to Step 9 
9 Replace the CMP sensor. Refer to Camshaft Position Sensor Replacement .
Did you complete the replacement?		 Go to Step 10  -
10
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 Go to Step 2  Go to Step 11 
11 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?		 Go to Diagnostic Trouble Code (DTC) List - Vehicle System OK
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