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Home >> Chevrolet >> 2014 >> Trax LS, Standard Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System And Washer System >> Diagnostic Information and Procedures >> DTC B370B: Rear Wiper Function Control Circuit >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Rear Closure Ajar Switch parameter changes between Inactive and Active when opening and closing the liftgate.
    • If the parameter changes 
  3. Verify the Scan Tool Rear Wiper Switch Parameter changes between ON and OFF when cycling the rear wiper switch ON and OFF.
    • If the parameter does not change
    • Refer to Circuit/System Testing - Rear Wiper/Washer Switch Malfunction
    • If the parameter changes
  4. Verify the M45 Rear Wiper Motor cycles when commanding the rear wiper ON with the rear wiper switch
    • If the M45 Rear Wiper Motor does not cycle 

      Refer to Refer to Circuit/System Testing - Rear Wiper Motor Malfunction

    • If the M45 Rear Wiper Motor cycles 
  5. Verify the M45 Rear Wiper Motor returns to the park position when the rear wipers are turned OFF
    • If the M45 Rear Wiper Motor does not return to the park position 

      Refer to Circuit/System Testing - Rear Wiper Motor Malfunction

    • If the M45 Rear Wiper Motor returns to the park position 
  6. All OK.
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