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B1E4B






B1E4B-3RD ROW SEAT LEFT STOW/TAILGATE CONTROL CIRCUIT PERFORMANCE







- When Monitored:
Whenever the Left Stow/Tailgate Motor is activated.

- Set Condition:
If the Folding Seat Module does not detect seat motor rotation from the motor position sensor after a switch activation input, this DTC will set.





1. CHECK FOR RELATED DIAGNOSTIC TROUBLE CODES
1. Turn the ignition on.
2. With the scan tool, read DTC's.

Does the scan tool display seat position sensor DTC?

Yes

- Diagnose and repair the other DTC(s) first. Testing and Inspection.

No

- Go To 2

2. INSPECT SEAT MECHANICAL OPERATION
1. Gain access to and:
- Inspect for broken seat welds.
- Inspect for broken frame.
- Inspect each seat leg latch micro switch for proper mechanical operation.
- Check seat leg latch mechanical operation by manually closing and releasing each latch and note any sticking, wear, or damage.
- Check seat leg for binding or an object or obstruction in latch striker pocket.
- Manually operate the latch release actuator and check for any binding in the latch release cable system.

Were any problems found?

No

- Go To 3

Yes

- Repair or replace component(s) as necessary.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST. Power Folding Seat System Verification Test.

3. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, erase all DTC's.
3. Activate the seat switch of the affected positions three times.
4. With the scan tool, read DTC's.

Does the scan tool display this DTC as active?

Yes

- Go To 4

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST. Power Folding Seat System Verification Test.

4. CHECK THE (P318) LEFT SEAT STOW POSITION SENSOR SUPPLY CIRCUIT VOLTAGE




1. Turn the ignition off.
2. Disconnect the Left Power Rear Folding Seat Stow Motor harness connector.
3. Turn the ignition on.
4. Connect a voltmeter between the (P318) Left Seat Stow Position Sensor Supply circuit and the (P319) Left Seat Stow Position Sensor Return circuit at the Seat Motor harness connector.
5. With the Folding Seat Switch select the left seat.
6. Depress the Stow position switch.

Is the voltage 10.0 volts?

Yes

- Go To 5

No

- Go To 6

5. CHECK THE LEFT SEAT STOW UNSTOW DRIVER CIRCUIT VOLTAGE




1. Using a 12-volt test light connect one lead to the (P293) Left Seat Motor Stow Driver circuit and the other lead to (P294) Left Seat Motor Unstow Driver circuit at the Seat Motor harness connector.
2. With the left seat selected at the folding seat switch, depress any folding seat button twice then alternate to a different button and depress it twice.

NOTE: Light should flash On with second button press.

Does the test light flash On momentarily?

Yes

- Replace the motor assembly.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST. Power Folding Seat System Verification Test.

No

- Go To 8

6. CHECK THE (P318) LEFT SEAT STOW POSITION SENSOR SUPPLY CIRCUIT FOR AN OPEN




1. Turn the ignition off.
2. Disconnect the Folding Seat Module C4 harness connector.
3. Measure the resistance of the (P318) Left Seat Stow Position Sensor Supply circuit between the Seat Motor harness connector and the Folding Seat Module C4 harness connector.

Is the resistance below 3.0 ohms?

Yes

- Go To 7

No

- Repair the (P318) Left Seat Stow Position Sensor Supply circuit for an open.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST. Power Folding Seat System Verification Test.

7. CHECK THE (P319) LEFT SEAT STOW POSITION SENSOR RETURN CIRCUIT FOR AN OPEN




1. Measure the resistance of the (P319) Left Seat Stow Position Sensor Return circuit between the Seat Motor harness connector and the Folding Seat Module C4 harness connector.

Is the resistance below 3.0 ohms?

Yes

- Replace the Folding Seat Module.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST. Power Folding Seat System Verification Test.

No

- Repair the (P319) Left Seat Stow Position Sensor Return circuit for an open.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST. Power Folding Seat System Verification Test.

8. CHECK THE (P293) LEFT SEAT MOTOR STOW DRIVER CIRCUIT FOR AN OPEN




1. Turn the ignition off.
2. Disconnect the Folding Seat Module C4 harness connector.
3. Measure the resistance of the (P293) Left Seat Motor Stow Driver circuit between the Seat Motor harness connector to the Folding Seat Module C4 harness connector.

Is the resistance below 3.0 ohms?

Yes

- Go To 9

No

- Repair the (P293) Left Seat Motor Stow Driver circuit for an open.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST. Power Folding Seat System Verification Test.

9. CHECK THE (P294) LEFT SEAT MOTOR UNSTOW DRIVER CIRCUIT FOR AN OPEN




1. Measure the resistance of the (P294) Left Seat Motor Unstow Driver circuit between the Seat Motor harness connector and the Folding Seat Module C4 harness connector.

Is the resistance below 3.0 ohms?

Yes

- Replace the Folding Seat Module.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST. Power Folding Seat System Verification Test.

No

- Repair the (P294) Left Seat Motor Unstow Driver circuit for an open.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST. Power Folding Seat System Verification Test.

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