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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 181 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC 065 >> Test Description

Test Description

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

  1. 2:  This step inspects the PPS pressure sensor connector.
  2. 5:  This step tests for a short to ground, a high resistance or an open in the PPS sensor signal circuit.
  3. 6:  This step tests for a short to ground, a high resistance or an open in the PPS sensor 5-volt reference circuit.
  4. 7:  This step tests for a short to ground, a high resistance or an open in the PPS sensor low reference circuit.
  5. 8:  This step tests for a short to voltage in the PPS sensor signal circuit.
  6. 9:  This step tests the PPS sensor signal circuit input voltage range.
  7. 10:  This step tests for a short to voltage in the PPS sensor 5-volt reference circuit.
  8. 11:  This step 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 (AK5 or AJ7)  or SIR Schematics (AW9) 
Connector End View Reference: SIR Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
  1. Turn OFF the ignition.
  2. Disconnect the passenger presence system (PPS) pressure sensor connector. Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming.
  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 Control Module References in Computer/Integrating Systems for replacement, setup and programming.
  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.
  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 
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 
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 
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 
  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 
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 Replace the PPS. Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming.
Did you complete the replacement?
- Go to Step 13  -
13
  1. Reconnect all supplemental inflatable restraint (SIR) and PPS system components.
  2. Verify that all components, connectors and connector position assurances (CPAs) are properly mounted.
  3. Use the scan tool in order to clear the SIR and PPS DTCs.
  4. Rezero the PPS. Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming.
  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