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Home >> Buick >> 2021 >> Enclave Preferred >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Electronic Transmission Range Select System >> Diagnostic Information and Procedures >> DTC P0697 >> Circuit/System Testing
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Circuit/System Testing

  1. Ignition OFF, disconnect the connector at the S3 Transmission Shift Lever.
  2. Test for 4.8 - 5.2 V between the 5 V reference circuit terminal 4, and ground.
    • If less than 4.8 V 
    1. Ignition OFF, disconnect the connector at the K38 Chassis Control Module.
    2. Test for infinite resistance between the 5 V reference circuit, K38 Chassis Control Module terminal 1, and ground.
      • If less than infinite resistance, repair the short to ground in the circuit.
      • Go to next step: If infinite resistance
    3. Test for less than 2 Ω in the 5 V reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • Go to next step: If less than 2 Ω
    4. Test for infinite resistance between the 5 V reference circuit, terminal 1, and all other pins of the K38 Chassis Control Module connector.
      • If less than infinite resistance, repair the shorted together condition in the affected circuits.
      • If infinite resistance, replace the K38 Chassis Control Module.
    • If greater than 5.2 V 
    1. Ignition OFF, disconnect the connector at the K38 Chassis Control Module.
    2. Ignition ON, engine OFF.
    3. Test for less than 1 V between 5 V reference circuit terminal 1 and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    4. Ignition OFF.
    5. Test for infinite resistance between the 5 V reference circuit, terminal 1, and all other pins of the K38 Chassis Control Module connector.
      • If less than infinite resistance, repair the shorted together condition in the affected circuits.
      • If infinite resistance, replace the K38 Chassis Control Module.
    • Go to next step: If between 4.8 - 5.2 V 
  3. Test for 4.875 - 5.125 V between the 5 V reference circuit terminal 4, and the low reference circuit terminal 2.
    • If less than 4.8 V 
    1. Ignition OFF, disconnect the connector at the K38 Chassis Control Module.
    2. Ignition ON, engine OFF.
    3. Test for less than 1 V between the low reference circuit terminal 5 and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    4. Test for less than 2 Ω in the low reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • Go to next step: If less than 2 Ω
    5. Test for infinite resistance between the low reference circuit, terminal 5, and all other pins of the K38 Chassis Control Module connector.
      • If less than infinite resistance, repair the shorted together condition in the affected circuits.
      • If infinite resistance, replace the K38 Chassis Control Module.
    • If greater than 5.2 V 
    1. Ignition OFF, disconnect the connector at the K38 Chassis Control Module.
    2. Ignition ON, engine OFF.
    3. Test for less than 1 V between the low reference circuit terminal 5 and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    4. Test for infinite resistance between the low reference circuit, terminal 5, and all other pins of the K38 Chassis Control Module connector.
      • If less than infinite resistance, repair the shorted together condition in the affected circuits.
      • If infinite resistance, replace the K38 Chassis Control Module.
    • Go to next step: If between 4.8 - 5.2 V 
  4. Test or replace the S3 Transmission Shift Lever.
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