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. To monitor system operation such as speed
and position of gate, PTG uses optical sensor. Optical sensor is located
at channel and pinion assembly and always makes a pair to distinguish
moving direction of door. Signal of optical sensor is pulse signal and
used for control of motor speed,gate position and detecting
obstacle.
The ECM sets DTC B1105
if power voltage of optical sensor is out of threshold range.
Item
|
Detecting
Condition
|
Possible Cause
|
DTC
Strategy
|
|
| •
|
Open or short in power
harness | |
Enable
Conditions
|
| •
|
IGN 'ON' & Engine 'OFF' & PTG
"ON" | |
Threshold
value
|
| •
|
3.95V or less, 6V or
more | |
Detecting
time
|
|
FAIL
SAFE
|
| •
|
Inhibit powerdoor
operation | |
| 1. |
Connect scantool to Data Link
Connector(DLC). |
| 2. |
Ignition "ON" & engine "OFF" & PTG
"ON" |
| 3. |
Monitor the "Optical Sensor Power Voltage"
Parameter on the Scantool.
Specification
: 3.95 ~ 6 V
|
|
| 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.
|
|
| 1. |
Check for open/short in harness
| (1) |
Ignition "ON" & engine "OFF" &
PTG "ON" |
| (2) |
Disconnect "OPTICAL SENSOR"
connector. |
| (3) |
Measure voltage between terminal of
optical sensor and chassis ground
Specification :
Approx. 5V
| |
| (4) |
Is the measured voltage within
specifications?
|
|
▶ Go
to "Component Inspection" procedure.
|
|
|
▶
Check for open or short in harness. Repair as necessary
and go to "Verification of Vehicle Repair"
procedure.
|
| |
| 1. |
Check PTG
| (1) |
Ignition "ON" & engine "OFF" &
PTG "ON" |
| (2) |
Disconnect "PTG module"
connector |
| (3) |
Measure voltage between sensing terminal
of PTG and chassis ground.
Specification :
Approx. 5V
| |
| (4) |
Is the measured voltage within
specifications?
|
|
▶ Go
to "Check optical sensor" procedure.
|
|
|
▶
Substitute with a known-good PTG and check for proper
operation.If the problem is corrected, replace PTG and
then go to "Verification of Vehicle Repair"
procedure.
|
| |
| 2. |
Check optical sensor
| (1) |
Connect scantool to Data Link
Connector(DLC). |
| (2) |
Ignition "ON" & engine "OFF" &
PTG "ON" |
| (3) |
Substitute with a known-good optical
sensor and Check if the DTC is
erased |
| (4) |
Is the DTC erased?
|
|
▶
Substitute with a known-good optical sensor and check
for proper operation.
If the
problem is corrected, replace optical sensor and then go
to "Verification of Vehicle Repair"
procedure.
|
|
|
▶
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.
|
| |
| 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.
|
|
