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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1275 (Electronic Suspension System - Automatic Level Control) >> Diagnostic Information and Procedures >> DTC C0711 >> Test Description

Test Description

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

  1. 2:  Tests for a high resistance or an open in the ground circuit.
  2. 7:  Check for open or high resistance in the sensor ground circuit.
  3. 13:  The replacement suspension control module must be calibrated.
DTC C0711

Step Action Value(s) Yes No
Schematic Reference: 
1
IMPORTANT: If DTC C0870 is present, perform the diagnosis for DTC C0870 first.
Did you perform the Automatic Level Control Diagnostic System Check?		 - Go to Step 2  Go to
2 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With the scan tool, observe the Air Pressure Sensor data parameter in the ALC data list.
Does the scan tool indicate that the Air Pressure Sensor parameter is within the specified range?		 0.15 - 4.85 V Go to in Wiring Systems. Go to Step 3 
3
  1. Turn OFF the ignition.
  2. Disconnect the ALC compressor connector.
  3. Turn ON the ignition, with the engine OFF.
  4. With the scan tool, observe the air pressure sensor data parameter.
Does the scan tool indicate that the air pressure sensor data parameter is at the specified value?		 0.0 V Go to Step 4  Go to Step 6 
4 Connect a 3 amp fused jumper wire between the 5 volt reference and signal circuit of the ALC compressor harness connector.
Does the scan tool indicate that the Air Pressure Sensor data parameter is within the specified range?		 4.8-5.2 V Go to Step 9  Go to Step 5 
5 Test the pressure sensor signal circuit for an open, or short to ground. Refer to and in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 14  Go to Step 6 
6 Test the pressure sensor signal circuit for a short to voltage. Refer to and in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 14  Go to Step 7 
7  Test the pressure sensor 5 volt reference circuit an open, or short to ground. Refer to and in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 14  Go to Step 8 
8 Test the pressure sensor 5 volt reference circuit for a short to voltage. Refer to and in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 14  Go to Step 10 
9 Test the pressure sensor low reference circuit for an open, or short to voltage.
Did you find and correct the condition?		 - Go to Step 14  Go to Step 12 
10 Inspect for poor connections at the ALC compressor harness connector. Refer to and in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 14  Go to Step 11 
11 Inspect for poor connections at the suspension control module harness connector. Refer to and in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 14  Go to Step 13 
12 Replace the pressure sensor. Refer to in Automatic Level Control.
Did you complete the replacement?		 - Go to Step 14  -
13 
IMPORTANT: After replacement, use the scan tool to perform the calibration procedure for the suspension control module, located under Special Functions: Recalibration.
Replace the suspension control module. Refer to in Electronic Suspension Control (ESC).Did you complete the replacement?		 - Go to Step 14  -
14
  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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