B1E5F

B1E5F- 3RD ROW SEAT LEFT LATCH SWITCH CIRCUIT PERFORMANCE





For a complete wiring diagram REFER to DIAGRAMS/ELECTRICAL


- When Monitored:
During Stow activation.

- Set Condition:
If the Folding Seat Module does not detect after one second that the latch switches are open after it actuates the unlatch actuator this DTC will set.






Diagnostic Test


1. INSPECT SEAT MECHANICAL OPERATION
Gain access to and inspect the following components:

- Object or obstruction in seat latch striker pocket or seat leg for a binding condition.


- Check seat leg latch mechanical operation by manually closing and releasing each latch and note any sticking, wear or damage.


- Inspect each seat leg latch micro switch for proper mechanical operation.


- Broken seat welds or frame.


- Manually operate the latch release actuator and check for any binding in the latch release cable system.


Were any problems found?

No


- Go To 2


Yes


- Correct condition or replace component(s) as necessary.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1. Power Folding Seat System Verification Test

2. CHECK FOR DTCS
Turn the ignition on.
With the scan tool, record and erase all DTC's.
Operate the Folding Seat Switch several times.
With the scan tool, read DTCs.
Does the scan tool display this DTC as active?

Yes


- Go To 3


No


- Using the wiring diagrams as a guide, inspect the wiring and connectors for an intermittent condition.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1. Power Folding Seat System Verification Test

3. CHECK THE LATCH SWITCH FUNCTION
With the scan tool read the Left Seat Latch Switches while manually latching and unlatching the left seat.
Do the latch switches operate correctly?

Yes


- Go To 7


No


- Go To 4



4. CHECK THE LATCH SWITCH FUNCTION
Disconnect both Left Power Rear Folding Seat Latch Switch connectors.
Measure the resistance of each switch. With the latch in the unlatched position the switch should measure open and in the latched position the switch should measure closed.
Do the latch switches operate correctly?

Yes


- Go To 5


No


- Replace the Seat Latch Switch as necessary.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1. Power Folding Seat System Verification Test


5. CHECK THE (P922) LEFT SEAT LATCH SWITCH SENSE CIRCUIT FOR A SHORT TO THE (P921) SEAT LATCH SWITCH RETURN CIRCUIT.




Disconnect the Folding Seat Module C1 harness connector.
Measure the resistance between the (P922) Left Seat Latch Switch Sense circuit and the (P921) Seat Latch Switch Return circuit in the Folding Seat Module C1 connector.
Is the resistance below 10,000.0 (10k) ohms?

No


- Go To 6


Yes


- Repair the (P922) Left Seat Latch Switch Sense circuit for a short to the (P921) Seat Latch Switch Return circuit.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1. Power Folding Seat System Verification Test


6. CHECK THE (P922) LEFT SEAT LATCH SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND




Reconnect both Left Power Rear Folding Seat Latch Switch connectors.
Measure the resistance of the (P922) Left Seat Latch Switch Sense circuit to ground at the Folding Seat Module C1 connector.
Is the resistance below 10,000.0 (10k) ohms?

No


- Replace the Folding Seat Module.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1. Power Folding Seat System Verification Test


Yes


- Repair the (P922) Left Seat Latch Switch Sense circuit for a short to ground.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1. Power Folding Seat System Verification Test

7. CHECK THE SEAT LATCH DRIVER CIRCUIT VOLTAGE




Disconnect the Left Power Rear Folding Seat Latch harness connector.
Connect a voltmeter to the (P312) Left Seat Latch Driver circuit and the (P313) Left Seat Unlatch Driver circuit at the Left Power Rear Folding Seat Latch harness connector.
With the seat in the latched position, depress the seat Stow button.
Does the voltmeter display the vehicles battery voltage?

No


- Go To 8


Yes


- Replace the Left Power Rear Folding Seat Latch actuator.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1. Power Folding Seat System Verification Test


8. CHECK THE (P312) LEFT SEAT LATCH DRIVER CIRCUIT FOR AN OPEN




Disconnect the Power Folding Seat Module C1 harness connector.
Measure the resistance of the (P312) Left Seat Latch Driver circuit between the Left Power Rear Folding Seat Latch harness connector to the Power Folding Seat Module C1 harness connector.
Is the resistance below 3.0 ohms?

Yes


- Go To 9


No


- Repair the (P312) Left Seat Latch Driver circuit for an open.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1 Power Folding Seat System Verification Test


9. CHECK THE (P313) LEFT SEAT UNLATCH DRIVER CIRCUIT FOR AN OPEN




Measure the resistance of the (P313) Left Seat Unlatch Driver circuit between the Left Power Rear Folding Seat Latch harness connector to the Power Folding Seat Module C1 harness connector.
Is the resistance below 10.0 ohms?

Yes


- Replace the Power Folding Seat Module.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1 Power Folding Seat System Verification Test

No


- Repair the (P313) Left Seat Unlatch Driver circuit for an open.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1 Power Folding Seat System Verification Test