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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 85 (Transfer Case - ISUZU T150) >> Diagnostic Information and Procedures >> DTC C0327 >> Test Description

Test Description

WARNING: This page is about a different car, the 2007 Isuzu i-370, 2007 GMC Canyon, and 2007 Chevrolet Colorado. 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. 2:  This step determines if the module is providing correct output voltage on the encoder signal circuits.
  2. 3:  This step determines if the 4 encoder signal circuits are shorted together.
  3. 4:  This step determines if any of the 4 encoder signal circuits are shorted to ground, or have high resistance.
DTC C0327

Step Action Value(s) Yes No
Schematic Reference: Transfer Case Control Schematics 
Connector End View Reference:  Transfer Case Control Connector End Views  
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2 
  1. Set the parking brake.
  2. Raise the vehicle on a hoist. Refer to Lifting and Jacking the Vehicle .
  3. Disconnect the connector C3 at the transfer case encoder motor.
  4. Turn ON the ignition, with the engine OFF.
  5. Using a DMM at the encoder motor, test encoder signal circuits A, B, C, and P for proper voltage.
Is the voltage within the specified range?		 10-16 V Go to Step 3  Go to Step 4 
3 
  1. Disconnect the connector C2 at the transfer case shift control module.
  2. Using a DMM, test the encoder signal circuits A, B, C, and P for being shorted together. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 7  Go to Step 5 
4  Using a DMM, test the encoder signal circuits A, B, C, and P for a short to ground, an open, or a high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 7  Go to Step 6 
5 Replace the encoder motor. Refer to Transfer Case Encoder Motor Replacement .
Did you complete the repair?		 - Go to Step 7  -
6 Replace the transfer case shift control module. Refer to Control Module References for replacement, setup, and programming.
Did you complete the repair?		 - Go to Step 7  -
7
  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 set?		 - Go to Step 1  System OK
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