B1968 - Power Liftgate Open Direction Excessive Time: Notes

For a complete wiring diagram, refer to appropriate Wiring Diagram

• >>When Monitored:<< Anytime the power liftgate is in a power open operation.
• >>Set Condition:<< The drive motor has taken longer than 15 seconds to complete an open command.

Possible Causes
BINDING LIFTGATE
EXCESSIVE CIRCUIT RESISTANCE ON THE A115 POWER LIFTGATE MODULE FUSED B+ CIRCUIT, THE Q88 LIFTGATE OPEN DRIVER CIRCUIT, OR THE Q89 LIFTGATE CLOSE DRIVER CIRCUIT
POWER LIFTGATE DRIVE UNIT
INCORRECT POWER LIFTGATE MODULE IS INSTALLED IN THE VEHICLE

Theory of Operation

This code can also set if for some reason the liftgate was in an opening operation and it was interrupted by the engine cranking for over 20 seconds.

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, check for DTCs.

Does the scan tool display B1968 - Power Liftgate Open Direction Excessive Time?

Yes

• Go to Test Step 2 Test Step 2 - Binding Liftgate 

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 conditions.
• Perform the Body Verification Test. Refer to BODY VERIFICATION TEST .