Test T: The Power Liftgate Module Does Not Respond To The Scan Tool

PINPOINT TEST T: THE POWER LIFTGATE MODULE DOES NOT RESPOND TO THE SCAN TOOL

T1:

T1-T3:

T3-T4:

Normal Operation
The power liftgate module communicates with the scan tool through the medium speed controller area network (MS-CAN). Circuits VDB06 (GY/OG) (MS-CAN +) and VDB07 (VT/OG) (MS-CAN -) provide the network connection to the power liftgate module. The power liftgate module shares the MS-CAN network with the instrument cluster, the smart junction box (SJB), the electronic manual temperature control module (if equipped), the electronic automatic temperature control (EATC) module (if equipped), the audio unit, the THX(R) amplifier (if equipped), the satellite radio receiver (if equipped), the power running board module (if equipped), the parking aid module (if equipped) and the climate controlled seat module (if equipped). Voltage for the power liftgate module is provided by circuits SBP14 (BN/RD) and SBB27 (BU/RD). Circuit GD149 (BK/GY) provides ground.

DTC U0230 - sets in a module which had attempted to communicate with the power liftgate module and failed.

Possible Causes
- Fuse
- Circuit GD149 (BK/GY) open
- Circuit SBP14 (BN/RD) open
- Circuit SBB27 (BU/RD) open
- Circuit VDB06 (GY/OG) open (MS-CAN +)
- Circuit VDB07 (VT/OG) open (MS-CAN -)
- Power liftgate module