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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 980 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC 065: NA >> 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. 2:  Inspects the PPS pressure sensor connector.
  2. 5:  Tests for a short to ground, a high resistance, or an open in the PPS sensor signal circuit.
  3. 6:  Tests for a short to ground, a high resistance, or an open in the PPS sensor 5-volt reference circuit.
  4. 7:  Tests for a short to ground, a high resistance, or an open in the PPS sensor low reference circuit.
  5. 8:  Tests for a short to voltage in the PPS sensor signal circuit.
  6. 9:  Tests the PPS sensor signal circuit input voltage range.
  7. 10:  Tests for a short to voltage in the PPS sensor 5 volt reference circuit.
  8. 11:  Tests for a short to voltage in the PPS sensor low reference circuit.
DTC 065

Step Action Value(s) Yes No
Schematic Reference: SIR Schematics 
Connector End View Reference: SIR Connector End Views 
1 Did you perform the Diagnostic System Check - SIR? - Go to Step 2  Go to Diagnostic System Check - SIR 
2 
  1. Turn OFF the ignition.
  2. Disconnect the PPS pressure sensor connector. Refer to Inflatable Restraint Passenger Presence System Replacement - Front .
  3. Inspect the pressure sensor terminals and harness connector for damage or corrosion.
Does the PPS pressure sensor terminals or harness connector exhibit any signs of damage or corrosion?		 - Go to Step 3  Go to Step 4 
3
  1. If the PPS pressure sensor terminals are damaged, replace the PPS. Refer to Inflatable Restraint Passenger Presence System Replacement - Front .
  2. If the PPS pressure sensor harness connector is damaged, replace the connector. Refer to Connector Repairs in Wiring Systems.
Did you complete the replacement?		 - Go to Step 13  -
4
  1. Disconnect the PPS module connector. Refer to Inflatable Restraint Passenger Presence System Replacement - Front .
  2. Inspect the PPS module connector for corrosion or damage. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 5 
5  Test the PPS sensor signal circuit for a short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 6 
6  Test the PPS sensor 5-volt reference circuit for a short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 7 
7  Test the PPS sensor low reference circuit for a short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 8 
8 
  1. Turn ON the ignition, with the engine OFF.
  2. Test the PPS sensor signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 9 
9  Test the PPS sensor signal circuit input voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Does the voltage measure within the specified range ?		 0.05-4.5 V Go to Step 10  Go to Step 12 
10  Test the PPS sensor 5-volt reference circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 11 
11  Test the PPS sensor low reference circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 12 
12
IMPORTANT: The PPS is a calibrated system. The PPS must be rezeroed after replacement.
Replace the PPS. Refer to Inflatable Restraint Passenger Presence System Replacement - Front .Did you complete the replacement?		 - Go to Step 13  -
13
  1. Reconnect all SIR and PPS system components.
  2. Verify that all components, connectors and CPAs are properly mounted.
  3. Use the scan tool in order to clear the SIR and PPS DTCs.
  4. Rezero the PPS. Refer to Passenger Presence System Rezeroing Procedure .
  5. 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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