B1E60

B1E60- 3RD ROW SEAT RIGHT 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 CIRCUIT FUNCTION
With the scan tool read the Right Seat Latch Switches while manually latching and unlatching the right seat.
Do the latch switches operate correctly?

Yes


- Go To 8


No


- Go To 4



4. CHECK THE RIGHT SEAT LATCH SWITCH FUNCTION




Disconnect the C391 Power Folding Rear Seat 16 way in-line harness connector.
Connect one end of jumper to cavity N (P921) Seat Latch Switch Return circuit at the 16 way and the other end to ground.
Connect one lead of an ohmmeter to cavity M (P920) Right Seat Latch Switch Sense circuit at the 16 way and the other end of the meter to ground.
Manually latch and unlatch the right seat and note the ohmmeter.

NOTE: With the seat in the latched position the circuit should have continuity.


Does the seat latch circuit operate correctly in the right seat?

Yes


- Go To 6


No


- Go To 5
- .


5. CHECK EACH RIGHT SEAT LATCH SWITCH
Disconnect both Right 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


- Repair the (P920) Right Seat Latch Switch Sense circuit for a short ground or to the (P921) Seat Latch Switch Return circuit.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1. Power Folding Seat System Verification Test


No


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


6. CHECK THE (P920) RIGHT SEAT LATCH SWITCH SENSE CIRCUIT FOR A SHORT TO (P921) SEAT LATCH SWITCH RETURN IN LEFT SEAT




Disconnect the Folding Seat Module C1 connector.
Measure the resistance of the (P920) Right Seat Latch Switch Sense circuit for a short to the (P921) Seat Latch Switch Return at the C391 Power Folding Rear Seat 16 way in-line connector.
Is the resistance below 10,000.0 (10k) ohms?

No


- Go To 7
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1. Power Folding Seat System Verification Test


Yes


- Repair the (P920) Right 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

7. CHECK THE (P920) RIGHT SEAT LATCH SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND




Measure the resistance of the (P920) Right 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 (P920) Right 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


8. CHECK THE SEAT LATCH DRIVER CIRCUIT VOLTAGE




Backprobe and connect a voltmeter to the (P314) Right Seat Latch Driver circuit and the (P315) Right Seat Unlatch Driver circuit at the C391 Power Folding Rear Seat 16 way in-line harness connector.
With the seat in the latched position, depress the seat Stow button and monitor the voltmeter.
Does the voltmeter display the vehicles battery voltage?

No


- Go To 9


Yes


- Go To 11



9. CHECK THE (P314) RIGHT SEAT LATCH DRIVER CIRCUIT FOR AN OPEN




Disconnect the Power Folding Seat Module C1 harness connector.
Measure the resistance of the (P314) Right Seat Latch Driver circuit between the Power Folding Seat Module C1 harness connector to the C391 Power Folding Rear Seat 16 way in-line harness connector.
Is the resistance below 3.0 ohms?

Yes


- Go To 10


No


- Repair the (P314) Right Seat Latch Driver circuit for an open.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1 Power Folding Seat System Verification Test


10. CHECK THE (P315) RIGHT SEAT UNLATCH DRIVER CIRCUIT FOR AN OPEN




Measure the resistance of the (P315) Right Seat Unlatch Driver circuit between the C391 Power Folding Rear Seat 16 way in-line 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 (P315) Right Seat Unlatch Driver circuit for an open.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1 Power Folding Seat System Verification Test


11. CHECK THE SEAT LATCH DRIVER CIRCUIT VOLTAGE




Disconnect the Right Power Rear Folding Seat Latch harness connector.
Connect a voltmeter to the (P314) Right Seat Latch Driver circuit and the (P315) Right Seat Unlatch Driver circuit at the Right Power Rear Folding Seat Latch harness connector.
With the seat in the latched position, depress the seat Stow button and monitor the voltmeter.
Does the voltmeter display the vehicles battery voltage?

No


- Repair either the (P314) Right Seat Latch Driver circuit or the (P315) Right Seat Unlatch Driver circuit in the Right Power Rear Folding Seat for an open.
- Perform POWER FOLDING SEAT SYSTEM VERIFICATION TEST - VER 1 Power Folding Seat System Verification Test


Yes


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