DTC B14E0 or B14E1
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. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptors DTC B14E0 3rd Row Right Seat Recline Position Sensor Signal DTC B14E1 3rd Row Left Seat Recline Position Sensor Signal Symptom Byte Information: Symptom Byte List Diagnostic Fault Information
| Circuit Number | Circuit Function | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performan |
|---|---|---|---|---|---|
| 4213 | Signal | B14E0:11 | B14E0:15 | B14E0:15 | — |
| 4214 | Signal | B14E1:11 | B14E1:15 | B14E1:15 | — |
| 5474 | Ground | — | B14E0:15, B14E1:15 | — | — |
Circuit/System Description The power folding third row seat system consists of folding seat switches, a control module, a seat back release actuator, a hall-effect position sensor, and the folding seat motor. The third row folding seat switches are located on the D-pillar. Voltage to the switches is supplied through the park enable relay while in a de-energized state. The park enable relay is controlled by the body control module (BCM) through a high side drive control circuit and will be de-energized whenever the ignition is in the accessory or run positions and the transmission is in park. Battery voltage is supplied to the folding seat control module through a 30 A fuse located in the rear body fuse block. When a folding seat switch is pressed, battery voltage is applied through the switch contacts and the signal circuit to the folding seat control module indicating the folding seat request. In response to this signal, the module applies a PWM voltage through the seat back release actuator control circuit energizing the actuator. With the actuator energized and the seat back released, the control module applies battery voltage and ground through the folding seat motor control circuits to the motor. The motor runs to either move the seat back cushion to the folded or unfolded seat position. The control module supplies the hall-effect sensor with a low reference and a signal circuit. The module monitors the voltage from the signal circuit in order to detect a seat stall condition. If the module does not detect seat movement within 400ms, it will cease folding seat operation. Conditions for Running the DTC Ignition ON Conditions for Setting the DTC B14E0:11 or B14E1:11 The K169 Folding 3rd Row Seat Module detects a short to ground on the signal circuit. B14E0:15 or B14E1:15 The K169 Folding 3rd Row Seat Module detects a short to voltage or an open/high resistance on the signal circuit. Action Taken When the DTC Sets The K169 Folding 3rd Row Seat Module will disable all seat functions. Conditions for Clearing the DTC The DTC clears when the diagnostic runs and passes. The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred. Reference Information Schematic Reference Rear Seat Schematics Connector End View Reference Master Electrical Component List Description and Operation Power Seats System Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Verification
- Ignition ON.
- Verify DTC B14E0 or B14E1 is not set. ⇒ If the DTC is set Refer to Circuit/System Testing. ⇓ If the DTC is not set
- A fault is currently not present and may be an intermittent condition. Circuit/System Testing
- Ignition OFF, disconnect the appropriate component listed below: DTC B14E1 = M108LR 3rd Row Seat Back Pivot Actuator Motor - Left DTC B14E0 = M108RR 3rd Row Seat Back Pivot Actuator Motor - Right
- Test for less than 10 Ω between the low reference circuit terminal listed below and ground: M108LR 3rd Row Seat Back Pivot Actuator Motor - Left = Terminal 4 M108RR 3rd Row Seat Back Pivot Actuator Motor - Right = Terminal 4 ⇒ If 10 Ω or greater 2.1. Test circuit 5474 for a open/high resistance. ⇒ If an open/high resistance is found, repair the fault on the circuit. ⇓ If an open/high resistance is not found 2.2. Replace the K169 Folding 3rd Row Seat Module. ⇓ If less than 10 Ω
- Connect a test lamp between the appropriate signal circuit terminal listed below and ground, ignition ON: M108LR 3rd Row Seat Back Pivot Actuator Motor - Left = Terminal 2 M108RR 3rd Row Seat Back Pivot Actuator Motor - Right = Terminal 2
- Verify the test lamp turns ON for approximately 30 s after pressing the S144B Folding Seat Control Switch – Rear Compartment 3rd Row. ⇒ If the test lamp remains OFF 4.1. Test the appropriate circuits listed below for a short to ground: M108LR 3rd Row Seat Back Pivot Actuator Motor - Left = Circuit 4214 M108RR 3rd Row Seat Back Pivot Actuator Motor - Right = Circuit 4213 ⇒ If a short to ground is found, repair the fault on the circuit. ⇓ If a short to ground is not found 4.2. Test the appropriate circuits listed below for an open/high resistance: M108LR 3rd Row Seat Back Pivot Actuator Motor - Left = Circuit 4214 M108RR 3rd Row Seat Back Pivot Actuator Motor - Right = Circuit 4213 ⇒ If an open/high resistance is found, repair the fault on the circuit. ⇓ If an open/high resistance is not found 4.3. Replace the K169 Folding 3rd Row Seat Module. ⇒ If the test lamp is always ON 4.1. Test the appropriate circuits listed below for a short to voltage: M108LR 3rd Row Seat Back Pivot Actuator Motor - Left = Circuit 4214 M108RR 3rd Row Seat Back Pivot Actuator Motor - Right = Circuit 4213 ⇒ If a short to voltage is found, repair the fault on the circuit. ⇓ If a short to voltage is not found 4.2. Replace the K169 Folding 3rd Row Seat Module. ⇓ If the test lamp turns ON and OFF
- Replace the appropriate component listed below: DTC B14E1 = M108LR 3rd Row Seat Back Pivot Actuator Motor - Left DTC B14E0 = M108RR 3rd Row Seat Back Pivot Actuator Motor - Right Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. Control Module References for K169 Folding 3rd Row Seat Module replacement, programming, and setup.