4.
After erase DTC, keep the vehicle condition within "the enable conditions" (Refer to "DTC Detecting Condition" table).
IMS(Integrated Memory System) is a system which can memorize the position of power seat(PTM), tilt/telescope handle(SCM), side mirror(DDM/ADM) by position sensor and restores them to a previous position. (Memory function is not allowed during driving for safety reason)
PSM sets this code when amount of change of the Rear height motor sensor is little than 12edge (6pulse) for 1sec. This means that rear height motor/sensor stuck due to open or short in circuit or external cause (compulsive restriction)
Item | Detecting Condition | Possible Cause |
DTC Strategy | ● Monitoring the motor's revolution by checking the pulse output of HALL sensor in the motor | ● Open in the rear height motor circuit ● Open in the rear height sensor circuit ● Faulty rear height motor/ sensor |
Enable Conditions | ● When the motor is running | |
Threshold Value | ● During the SEAT is operated, when the pulse input is less than 6 pulses within 1 second. | |
Diagnostic Time | ● Immediately | |
DTC Erasing Time | ● DTC is erased immediately after trouble fixed |
Fig 1) Normal waveform of seat recline moter position sensor
Connect GDS.
IG "ON" and engine "OFF".
Select "DTC Analysis" mode.
After erase DTC, keep the vehicle condition within "the enable conditions" (Refer to "DTC Detecting Condition" table).
Is the same DTC occurred again?
 | ▶ Go to "Component Inspection" procedure. |
 | ▶ Fault is intermittent caused by poor contact in the sensor's and/or PSM's connector or was repaired and PSM 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. |
Connect scantool
IG "ON" & ENG "OFF"
Select "Actuation Test" mode.
Execute "Rear Power Seat (UP, DOWN)" test.
Specification : Turned to pressed direction
Is motor working normal ?
| ▶ Go to "W/Harness Inspection" procedure. |
| ▶ Go to next procedure. |
IG "ON" & ENG "OFF"
After connect GDS, select "Current Date" menu.
Check whether "Seat Rear Side Switch" is turned to "ON" when the control switch is pressed. (UP, DOWN)
Specification : Service data is switched. (ON ↔ OFF)
Is the service data normal?
| ▶ Go to "Terminal and Connector Inspection" procedure. |
| ▶ Substitute with a known - good component and check for proper operation. If the problem is corrected, replace the component and go to "Verification of Vehicle Repair" procedure. |
Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to 'Signal Circuit Inspection' procedure. |
IG "ON" & ENG "OFF".
Measure the signal voltage of "Rear Height Sensor" with pressing the Rear Height Motor switch.
Specification : Approx. 1~4 V during motor working
Is the signal output normal?
| ▶ Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure. |
| ▶ Check open or short in circuit of Rear Height motor position(UP/DOWN) Sensor. If the circuit of Rear Height Motor Position(UP/DOWN) Sensor is normal, replace the Right Rear Height motor and go to "Verification of Vehicle Repair" procedure. |
After a repair, it is essential to verify that the fault has been corrected.
Connect scan tool and select "DTC Analysis" mode.
Clear the DTCs and Operate the vehicle within DTC Enable conditions in General information.
Is any DTC outputted again?
| ▶ Go to the applicable troubleshooting procedure. |
| ▶ System performing to specification at this time. |
