This is what i found today...i need to find a scan tool...
BTW: is the scanner the only tool i can use to ready body module codes? also, how can i clear them?
Power Liftgate Inoperative With DTC B153A
Models:2007 -2010 Cadillac Escalade and Escalade ESV
2007-2010 Chevrolet Avalanche, Tahoe, Suburban
2007-2010 GMC Yukon, Yukon XL, Denali, Denali XL
2007- 2010 Cadillac SRX
2008-2010 Buick Enclave
2007-2010 GMC Acadia
2007-2010 Saturn Outlook
2009 Chevrolet Traverse
2010 Cadillac CTS Wagon
with Power Lift Gate (RPO E61)
Condition/Concern:
Some customers may state that the power liftgate (RPO E61) is
inoperative. After initial diagnosis, you may find a current or
history DTC: B153A set in the power liftgate control module. After
inspecting parts returned to the warranty parts center, we have found
several power liftgate control modules returned with no trouble found.
Recommendation/Instructions:
Please use the following information below when diagnosing an
inoperative liftgate with DTC: B153A set.
1. Disconnect the connector at the liftgate latch assembly. With the
liftgate latch connector disconnected, the 3 signals for the ratchet,
pawl, and the sector should be inactive on the scan tool.
2. Install a 3A fused jumper wire between each signal circuit terminal
(for the pawl, sector, and ratchet) and the ground circuit terminal 2.
Monitor the scan tool as each individual circuit is jumpered to
ground, the scan tool should read "active".
3. If either test above fails, check the wiring for the signal
circuits, low reference circuit, or try a power liftgate control
module from a known good vehicle.
4. If both test's above pass, monitor the internal switch inputs in
the liftgate latch assembly for proper operation.
• A) With the liftgate in the open position, the ratchet and the pawl
should read "active" and the sector should read "inactive"
• B) With the liftgate in the secondary latched position, the pawl
should read "Inactive" and the ratchet and sector should read "active"
• C) With the liftgate fully closed, the pawl, ratchet, and the sector
should all read "inactive"
5. If one of the internal liftgate latch assembly switch inputs are
not reading correctly in one of the positions above and the vehicles
passes test 1 and 2 above. Replace the liftgate latch assembly.
Please follow this diagnostic or repair process thoroughly and
complete each step. If the condition exhibited is resolved without
completing every step, the remaining steps do not need to be performed
#PIT4041C: Power Liftgate Inoperative With DTC B153A - keywords gate
lift module rear tailgate - (Mar 11, 2010)
