Chevrolet Trax: DTC B3950
- Ignition OFF, disconnect the X2 harness connector at the K9 Body Control Module, ignition ON.
- Verify a test lamp illuminates between the B+ circuit terminal 3 and ground.
- If the test lamp does not illuminate and the circuit fuse is good
- Ignition OFF.
- Test for less than 2 ohms in the B+ circuit end to end.
- If 2 ohms or greater, repair the open/high resistance in the circuit.
- If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.
- If the test lamp does not illuminate and the circuit fuse is open
- Ignition OFF.
- Test for infinite resistance between the B+ circuit and ground.
- If less than infinite resistance, repair the short to ground on the circuit.
- If infinite resistance, replace the K9 Body Control Module.
- If the test lamp illuminates
- Ignition OFF, connect the X2 harness connector at the K9 Body Control Module.
- Ignition OFF, exterior lamps OFF, rear hatch latch latched, remove the E4LR Turn Signal Lamp Bulb - Left Rear.
- Test for less than 5 ohms between the ground circuit at the socket terminal and ground.
- If 5 ohms or greater
- Ignition OFF.
- Test for less than 2 ohms in the ground circuit end to end.
- 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.
- If less than 5 ohms
- Connect a test lamp between the control circuit at the socket terminal and ground, ignition ON.
- Verify the test lamp turns ON and OFF when commanding the Left Rear Turn Signal Lamp ON and OFF with a scan tool.
- If the test lamp is always OFF
- Ignition OFF, disconnect the X5 harness connector at the K9 Body Control Module.
- Test for infinite resistance between the control circuit and ground.
- If less than infinite resistance, repair the short to ground on the circuit.
- If infinite resistance
- Test for less than 2 ohms in the control circuit end to end.
- If 2 ohms or greater, repair the open/high resistance in the circuit.
- If less than 2 ohms, replace the K9 Body Control Module.
- If the test lamp is always ON
- Ignition OFF, disconnect the X5 harness connector at the K9 Body Control Module, ignition ON.
- Test for less than 1 V between the control circuit terminal and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V, replace the K9 Body Control Module.
- If the test lamp turns ON and OFF
- Test or replace the E4LR Turn Signal Lamp Bulb - Left Rear.
READ NEXT:
DTC B3951
Ignition OFF, disconnect the X5 harness connector at the K9 Body Control
Module, ignition ON.
Verify a test lamp illuminates between the B+ circuit terminal 3 and
ground.
If the test lamp do
DTC C0277 OR C0890
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
DTC C0277 06, C0277 07, C0890 03, and C0890 07
Ignition OFF, disconnect the harness connector at the B22 Brake Pedal
Position Sensor, ignition ON.
Verify a test lamp illuminates between the appropriate low reference
circuit terminal listed
SEE MORE:
Brake fluid
The purpose of brake fluid is to:
Utilize hydraulic pressure to apply force on brake components that use a
friction material to slow the
vehicle
Protect the brake system from corrosion
Motor vehicle brake fluids are hygroscopic and absorb moisture when exposed
to the atmosphere and in servic
Cleaning High Gloss Surfaces
and Vehicle Information and
Radio Displays
For vehicles with high gloss
surfaces or vehicle displays, use a
microfiber cloth to wipe surfaces.
Before wiping the surface with the
microfiber cloth, use a soft bristle
brush to remove dirt that could
scratch the surface. Then use the
microfiber cloth by gently rubbing to
clean. Never use window
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