Power
Tailgate(hereinafter PTG) is the system which moves tailgate of vehicle by
electronic motor so that user can open or close door with less force than
required on manual operation. PTG consists of drive unit, handle, switch,
warning buzzer, anti pinch(right/left) and cinch/latch(2 switch each).
Anti pinch switch is secondary protection equipment that prevents nipping
in the door and has steel point of contact in rubber strip. It is located
at both sides(right/left) of gate. When an obstacle has been detected
during a power closing operation, the PTG shall reverse direction and move
to the full open position (When an obstacle is detected during a power
opening operation, the PTG shall stop).
The ECM sets DTC B2425
if there's open or short to battery in left anti pinch sensor signal
harness.
Item
|
Detecting
Condition
|
Possible Cause
|
DTC
Strategy
|
|
| •
|
Short to battery in signal
harness |
|
Enable
Conditions
|
| •
|
IGN "ON" & ENG "OFF" &
PTG | |
Threshold
value
|
|
Detecting
time
|
|
FAIL
SAFE
|
| •
|
Inhibit close action, Inhibit latch
assembly
operation | |
| 1. |
Connect scantool to Data Link
Connector(DLC). |
| 2. |
Ignition "ON" & engine "OFF" & PTG
"ON" |
| 3. |
Monitor the "Left Pinch Strip Voltage"
Parameter on the Scantool.
Specification
: 3.66V or less
|
|
| 4. |
Is the measured current data within
specifications?
|
|
▶ Fault is
intermittent caused by poor contact in the sensor's and/or
ECM's connector or was repaired and ECM memory was not
cleared. Thoroughly check connectors for looseness, poor
connection, bending, corrosion, contamination, deterioration,
or damage. Repair or replace as necessary and then go to
"Verification of Vehicle Repair" procedure.
|
|
|
▶ Go to
"Inspection &Repair"
procedure.
|
|
| Terminal And Connector
Inspection |
| 1. |
Many malfunctions in the electrical system are
caused by poor harness and terminals.
Faults can also be caused by interference from
other electrical systems, and mechanical or chemical
damage. |
| 2. |
Thoroughly check connectors for looseness,
poor connection, bending, corrosion, contamination, deterioration,
or damage. |
| 3. |
Has a problem been found?
|
|
▶ Repair as
necessary and go to "Verification Vehicle Repair"
procedure.
|
|
|
▶ Go to
"W/Harness Inspection"
procedure.
|
|
| Signal Circuit
Inspection |
| 1. |
Check for open in harness
| (1) |
Ignition "OFF" & engine
"OFF" |
| (2) |
Disconnect Left Pinch Strip module and
PTG module connector. |
| (3) |
Measure resistance between sensing
terminal for left pinch strip of PTG and terminal of
APS.
Specification :
Approx. 0 Ω
| |
| (4) |
Is the measured resistance within
specifications?
|
|
▶ Go
to "Check for short in harness"
procedure.
|
|
|
▶
Check for open in signal harness. Repair as necessary
and go to "Verification of Vehicle Repair"
procedure.
|
| |
| 2. |
Check for short in harness
| (1) |
Ignition "OFF" & engine
"OFF" |
| (2) |
Disconnect Left Pinch Strip
module. |
| (3) |
Measure resistance between return
terminal of left pinch strip and chassis ground.
Specification :
Approx. ∞ Ω
| |
| (4) |
Is the measured resistance within
specifications?
|
|
▶ Go
to "Component Inspection" procedure.
|
|
|
▶
Check for short to battery in signal harness. Repair as
necessary and go to "Verification of Vehicle Repair"
procedure.
|
| |
| 1. |
Check left APS
| (1) |
Ignition "OFF" & engine
"OFF" |
| (3) |
Measure resistance between both terminal
of APS
Specification : Anti
pinch "ON" → 500Ω, "OFF" → 6.2kΩ±5%
|
|
| (4) |
Is the measured resistance within
specifications?
|
|
▶ Go
to "PTG module" procedure.
|
|
|
▶
Substitute with a known-good APS and check for proper
operation.
If the problem is
corrected, replace APS and then go to "Verification of
Vehicle Repair"
procedure.
|
| |
| 2. |
Check PTG module
| (1) |
Ignition "ON" & engine
"OFF" |
| (2) |
Disconnect Left Pinch Strip
module.. |
| (3) |
Measure the voltage between power
terminal for APS of PTG module and chassis
ground..
Specification :
Approx. : above 0.7~3.66v
| |
| (4) |
Is the measured resistance within
specifications?
|
|
▶
Check connectors for looseness, poor connection,
bending, corrosion, contamination, deterioration, or
damage. Repair or replace as necessary and then go to
"Verification of Vehicle Repair"
procedure.
|
|
|
▶
Substitute with a known-good "PTG module" and check for
proper operation.
If the
problem is corrected, replace "PTG module" and then go
to "Verification of Vehicle Repair"
procedure.
|
| |
| Verification Of Vehicle
Repair |
After a repair, it is
essential to verify that the fault has been corrected.
| 1. |
Connect scantool and selet "Diagnostic Trouble
Codes(DTCs)" mode and then clear
DTC. |
| 2. |
Operate the vehicle and monitor the DTC on the
scantool. |
| 3. |
Are any DTCs present ?
|
|
▶ Go to the
applicable troubleshooting procedure.
|
|
|
▶ System is
performing to specification at this
time.
|
|
