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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 96 (Wiper System And Washer System) >> Diagnostic Information and Procedures >> Washer Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Test 1

    NOTE:

    It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector:S82 Windshield Wiper/Washer Switch
  3. Test for less than 10 ohms between the test points:Low Reference circuit terminal 1 & Ground
    • If 10 ohms or greater 
    1. Disconnect the electrical connector:K9 Body Control Module
    2. Test for less than 2 ohms between the test points:Low Reference circuit terminal 1@Component harness & Terminal 10 X3@Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component:K9 Body Control Module
    • Go to next step: If less than 10 ohms 
  4. Ignition - On / Vehicle - In Service Mode
  5. Verify the scan tool parameter:Windshield Washer Switch = Inactive
    • If not the specified state 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector:K9 Body Control Module
    3. Test for infinite resistance between the test points:Signal circuit terminal 7@Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component:K9 Body Control Module
    • Go to next step: If the specified state 
  6. Connect a 3 A fused jumper wire between the test points:Signal circuit terminal 7 & Low Reference circuit terminal 1
  7. Verify the scan tool parameter:Windshield Washer Switch = Active
    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the electrical connector:K9 Body Control Module
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points:Signal circuit terminal 7@Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    5. Ignition/Vehicle - Off
    6. Test for less than 2 ohms between the test points:Signal circuit terminal 7@Component harness & Terminal 25 X3@Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component:K9 Body Control Module
    • Go to next step: If the specified state 
  8. Test or replace the component:S82 Windshield Wiper/Washer Switch

Test 2

    NOTE:

    It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector:G24 Windshield Washer Pump
  3. Test for less than 10 ohms between the test points:Ground circuit terminal 2 & Ground
    • If 10 ohms or greater 
    1. Test for less than 2 ohms between the test points:Ground circuit terminal 2 & Ground terminal G101
      • 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. Verify the fuse is not open:Fuse
    • If the fuse is open 
    1. Replace the component:Fuse
    2. Verify the fuse does not open.
      • If the fuse opens - Test or replace the component:X50A Fuse Block - Underhood
      • If the fuse does not open, go to the next step.
    • Go to next step: If the fuse is not open 
  5. Connect a test lamp between the test points:Control circuit terminal 1 & Ground circuit terminal 2
  6. Ignition - On / Vehicle - In Service Mode
  7. Perform the scan tool control function:Windshield Washer Relay - Active & Inactive

    Verify the test lamp does not turn On and Off.

    • If the test lamp turns On and Off 

      Test or replace the component:G24 Windshield Washer Pump

    • Go to next step: If the test lamp does not turn On and Off 
  8. Ignition/Vehicle - Off
  9. Connect the electrical connector:G24 Windshield Washer Pump
  10. Disconnect the electrical connector:X5@X50A Fuse Block - Underhood
  11. Ignition - On / Vehicle - In Service Mode
  12. Momentarily connect a 25 A fused jumper wire between the test points:Control circuit terminal H3 X5 & B+
  13. Verify the component turns On and Off when connecting and disconnecting the jumper wire:
    • If the component does not turn On and Off 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the electrical connector:G24 Windshield Washer Pump
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points:Control circuit terminal 1@Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    5. Ignition/Vehicle - Off
    6. Test for infinite resistance between the test points:Control circuit terminal 1@Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    7. Test for less than 2 ohms between the test points:Control circuit terminal 1@Component harness & Control circuit terminal H3 X5@X50A Fuse Block - UnderhoodTerminal
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Test or replace the component:G24 Windshield Washer Pump
    • Go to next step: If the component turns On and Off 
  14. Ignition/Vehicle & All vehicle systems - Off
  15. Verify the fuse is not open:Fuse
    • If the fuse is open 

      Test or replace the component:X50A Fuse Block - Underhood

    • Go to next step: If the fuse is not open 
  16. Test for less than 10 ohms between the test points:Ground circuit terminal H2 X5 & Ground
    • If 10 ohms or greater 
    1. Disconnect the ground connection:
    2. Test for less than 2 ohms between the test points:Ground circuit terminal H2 & The other end of the circuit@GroundTerminal
      • 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 
  17. Connect the electrical connector:X50A Fuse Block - Underhood
  18. Disconnect the electrical connector:X4@K9 Body Control Module
  19. Ignition - On / Vehicle - In Service Mode
  20. Momentarily connect a 3 A fused jumper wire between the test points:Control circuit terminal 14 & B+

    Verify the component turns On and Off when connecting and disconnecting the jumper wire:G24 Windshield Washer Pump

    • If the component does not turn On and Off 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the electrical connector:X50A Fuse Block - Underhood
    3. Ignition - On / Vehicle - In Service Mode
    4. Test for less than 1 V between the test points:Control circuit terminal 14@Control module harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    5. Ignition/Vehicle - Off
    6. Test for infinite resistance between the test points:Control circuit terminal 14@Control module harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    7. Test for less than 2 ohms between the test points:Control circuit terminal 14@Control module harness & The other end of the circuit@Control circuit terminal K6 X1@X50A Fuse Block - Underhood
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Test or replace the component:X50A Fuse Block - Underhood
    • Go to next step: If the component turns On and Off 
  21. Replace the component:K9 Body Control Module
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