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.

Ignition/Vehicle & All vehicle systems - Off
Disconnect the appropriate electrical connector:
- K55D Seat Blower Assembly - Driver Cushion
- K53D Seat Blower Assembly - Driver Back
- K55P Seat Blower Assembly - Passenger Cushion
- K53P Seat Blower Assembly - Passenger Back

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.

Test for less than 10 ohms between the test points:Ground circuit terminal 3 & 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 3@Component harness & The other end of the circuit@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
Ignition - On / Vehicle - In Service Mode
Verify a test lamp turns On between the test points:Ignition circuit terminal 1 & Ground
- If the test lamp does not turn On and the circuit fuse is OK
1. Ignition/Vehicle - Off & Remove - Test lamp
2. Test for less than 2 ohms between the test points:Ignition circuit terminal 1 & Output terminal@Fuse
  - If 2 ohms or greater - Repair the open/high resistance in the circuit.
  - If less than 2 ohms - Verify the fuse is OK and there is voltage at the fuse.
- If the test lamp does not turn On and the circuit fuse is open
1. Ignition/Vehicle - Off & Remove - Test lamp
2. Test for infinite resistance between the test points:Ignition circuit terminal 1 & Ground
  - If less than infinite resistance - Repair the short to ground on the circuit.
  - If infinite resistance - Test or replace the component:Blower Motor Assembly
- Go to next step: If the test lamp turns On
Test for less than 1 V between the test points:Control circuit terminal 2 & B+
- If 1 V or greater
1. Ignition/Vehicle - Off
2. Disconnect the electrical connector.X2@K29F Seat Heating Control Module - Front
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.
  - If infinite resistance - Replace the component:K29F Seat Heating Control Module - Front
- Go to next step: If less than 1 V
Engine - Idling
Operate the component:Venting - Switch - Pressed
Test for greater than 9 V between the test points:Control circuit terminal 2@Component harness & Ground
- If less than 9 V
1. Ignition Off
2. Disconnect the electrical connector:Blower Motor Assembly - BackorSeat Cushion & X2@K29F Seat Heating Control Module - Front
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.
  - Go to next step: If less than 1 V
5. Test for less than 2 ohms between the test points:Control circuit terminal 2@Component harness & The other end of the circuit@Control module harnessX2
  - If 2 ohms or greater - Repair the open/high resistance in the circuit.
  - If less than 2 ohms - Replace the component:K29F Seat Heating Control Module - Front
- Go to next step: If 9 V or greater
Test or replace the component:Blower Motor Assembly.