B196E–POWER LIFTGATE CLOSE DIRECTION – FULL OPEN SWITCH PERFORMANCE
For a complete wiring diagram Refer to Section 8W
- When Monitored:
During the Power Liftgate close cycle.
- Set Condition:
The Full Open Switch was detected as remaining closed for more than 60 counts since the start of the close operation.
May be triggered by an intermittent full open switch failure.
| Possible Causes |
| LATCH HAS BEEN MANUALLY LATCHED WITH THE GATE IN THE FULL OPEN POSITION |
| (Q51) LIFTGATE FULL OPEN SWITCH SENSE CIRCUIT OPEN |
| (Q51) LIFTGATE FULL OPEN SWITCH SENSE CIRCUIT INTERMITTENT SHORT TO GROUND |
| (Q51) LIFTGATE FULL OPEN SWITCH SENSE CIRCUIT SHORT TO GROUND |
| (Q901) LOGIC GROUND OPEN |
| POWER LIFTGATE DRIVE UNIT |
| POWER LIFTGATE MODULE |
Diagnostic Test
1.DTC PRESENTDoes the scan tool display B196E–POWER LIFTGATE CLOSE DIRECTION – FULL OPEN SWITCH PERFORMANCE?
Yes
- Go To2
No
- Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition. Operate the liftgate several times and check for any binding or obstructions.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2.OBSTRUCTION OR STICKING SWITCH
Does the switch status change smoothly as the liftgate is pulled down from the full open position?
Yes
- Go To3
No
- Go To4
3.(Q51) LIFTGATE FULL OPEN SWITCH SENSE CIRCUIT INTERMITTENT SHORT TO GROUND
CAUTION: Never operate the Power Liftgate Drive Unit with the link rod removed as it could damage the Drive Unit.
Did the switch status ever change?
Yes
- Repair the (Q51) Liftgate Full Open Switch Sense circuit for an intermittent short to ground.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Replace the Power Liftgate Drive Unit in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
4.CHECK THE POWER LIFTGATE DRIVE UNIT — FULL OPEN SWITCH
Is the voltage constantly above 4.6 volts?
Yes
- Replace the Power Liftgate Drive Unit in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Go To5
5.(Q51) LIFTGATE FULL OPEN SWITCH SENSE CIRCUIT SHORT TO GROUND
Is the resistance below 1000.0 ohms?
Yes
- Repair the (Q51) Liftgate Full Open Switch Sense circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Go To 6
6.(Q51) LIFTGATE FULL OPEN SWITCH SENSE CIRCUIT SHORT TO (Q901) LOGIC GROUND
Is the resistance below 1000.0 ohms?
Yes
- Repair the (Q51) Liftgate Full Open Switch Sense circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Go To 7
7.(Q901) LOGIC GROUND OPEN
Is the resistance below 9.5 ohms?
Yes
- Go To 8
No
NOTE: The (Q901) Logic Ground circuit is grounded through the Power Liftgate Module and the (Z800) Ground circuit.
Repair the (Q901) Logic Ground circuit for an open.- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
8.(Q51) LIFTGATE FULL OPEN SWITCH SENSE CIRCUIT OPEN
Is the resistance below 5.0 ohms?
No
- Repair the (Q51) Liftgate Full Open Switch Sense circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
Yes
- Replace the Power Liftgate Module in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).