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Home >> Chevrolet >> 2021 >> Traverse L >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Driver Assistance Systems >> Diagnostic Information and Procedures >> Seat Haptic Signal Motor Malfunction >> Circuit/System Testing

Circuit/System Testing

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the appropriate electrical connector:
    • DTC B172E - P45LR Seat Haptic Movement Motor - Driver Left Rear
    • DTC B172F - P45RR Seat Haptic Movement Motor - Driver Right Rear
  3. Verify a test lamp turns On between the test points: Ground circuit terminal 1 & B+
    • If 10 ohms or greater 
    1. Test for less than 2 ohms between the test points: Ground circuit terminal 1 & Ground terminal
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 ohms 
  4. Connect a test lamp between the test points: Control circuit terminal 2 & Ground circuit terminal 1
  5. Ignition - On / Vehicle - In Service Mode
  6. Perform the appropriate scan tool control function:
    • Driver Seat Cushion Left Rear Haptic Movement - On and Off
    • Driver Seat Cushion Right Rear Haptic Movement - On and Off
  7. Verify the test lamp turns On and Off.
    • If the test lamp is always Off 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: K40 Seat Memory Control Module
    3. Test for infinite resistance between the test points: Control circuit terminal 2 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    4. Test for less than 2 ohms between the test points: Control circuit terminal 2 @ Component harness & The other end of the circuit @ Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K40 Seat Memory Control Module
    • If the test lamp is always On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: K40 Seat Memory Control Module
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Control circuit terminal 2 @ Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • If less than 1 V - Replace the component: K40 Seat Memory Control Module
    • Go to next step: If the test lamp turns On and Off 
  8. Test or replace the component:
    • P45LR Seat Haptic Movement Motor - Driver Left Rear
    • P45RR Seat Haptic Movement Motor - Driver Right Rear
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