B196E - Power Liftgate Close Direction Full Open Switch Performance: Notes

Fig 1: Power Liftgate Close Direction Full Open Switch Performance

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

For a complete wiring diagram, refer to appropriate Wiring Diagram

>>When Monitored:<< During the power liftgate close cycle.
>>Set Condition:<< The full open switch was detected as remaining closed after the liftgate closed 20% from start of the close operation. May be triggered by an intermittent full open switch failure.

Possible Causes
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

Theory of Operation

The Full Open Switch indicates when the gate is a few degrees from full open position. The switch is closed when the liftgate is fully open and the switch is open when the liftgate is either fully closed and latched or between full open and closed. It can be checked by manually opening and closing the liftgate while monitoring the scan tool.

Test Step 1 - DTC Present

With the scan tool, record and erase DTCs.
Turn the ignition OFF, wait 10 seconds, then turn the ignition ON.
Operate the power liftgate several times if possible.
With the scan tool, read Active DTCs.

Does the scan tool display B196E - Power Liftgate Close Direction Full Open Switch Performance?

Yes

Go to Test Step 2 Test Step 2 - Obstruction Or Sticking Switch

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 the Body Verification Test. Refer to BODY VERIFICATION TEST .