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 Recline motor position sensor is little than 12edge (6pulse) for 2sec. This means that Recline 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 Recline motor circuit ● Open in the Recline motor circuit ● Faulty Recline 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 2 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 "Seat Recline Motor (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 "Recline Switch" is turned to "ON" when the control switch is pressed. (Forward, Backward)
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 "Seat Recline Motor / Sensor" with pressing the Recline 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 Recline motor position Sensor. If the circuit of Recline Motor Position Sensor is normal, replace the Recline motor/sensor 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. |
