Pinpoint Test J: Memory Seat Does Not Operate Correctly - Does Not Operate Using Memory SET Switch
Seats
Pinpoint Test J: The Memory Seat Does Not Operate Correctly - Does Not Operate Using the Memory SET Switch
Normal Operation
When the memory SET switch is activated, it supplies a ground signal to the Driver Seat Module (DSM) to initiate a memory SET or recall command. Memory button 1 and memory button 2 each have separate circuits to the DSM (Driver Seat Module).
The DSM (Driver Seat Module) supplies a shared signal feed circuit to each position sensor. Each position sensor sends a signal pulse back to the DSM (Driver Seat Module) to monitor the position of the seat track and seat recliner. The DSM (Driver Seat Module) stores the sensor position data when a SET command is received and uses this information to return the seat to the stored position when a recall command is received.
When a recall command is initiated, the DSM (Driver Seat Module) supplies voltage and ground to the seat track motors and seat recliner motor to move the seat to the stored position. For information on programming memory positions or recalling a stored memory position, refer to Memory Position Programming Programming and Relearning.
The following pinpoint test diagnoses a memory seat that does not operate correctly using the memory SET switch. If the memory seat does not move in all directions using the seat control switch, GO to Pinpoint Test I. Pinpoint Test I: Memory Seat Is Inoperative/Does Not Operate Correctly - Does Not Operate Horizontally/Vertically/Recline
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Memory SET switch
- Missing Medium Speed Controller Area Network (MS-CAN) status information:
- ignition status
- gear selector position
- RKE (Remote Keyless Entry) transmitter
- Seat track
- Power seat motor
- DSM (Driver Seat Module)
PINPOINT TEST J : THE MEMORY SEAT DOES NOT OPERATE CORRECTLY - DOES NOT OPERATE USING THE MEMORY SET SWITCH
NOTE: If a seat equipped with a seat mounted side air bag is being serviced, the Supplemental Restraint System (SRS) must be depowered. Refer to Restraints and Safety Systems &/or Air Bag Systems.
NOTE: The air bag warning lamp illuminates when the Restraints Control Module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate an SRS (Supplemental Restraint System) fault.
NOTE: The SRS (Supplemental Restraint System) must be fully operational and free of faults before releasing the vehicle to the customer.
NOTE: Verify good battery condition before diagnosing the memory seat system. Poor battery condition may interfere with memory seat operation, even if vehicle starting is possible.
J1 CHECK THE PCM TRANSMISSION RANGE (TR) PID STATES
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DataLogger- PCM PID: TR.
- Operate the transmission gear selector in all positions while monitoring the PCM PID TR states.
Do the PID states agree with the selected positions?
Yes
GO to J2.
No
To diagnose a transmission gear selector (PRNDL) status concern, REFER to Automatic Transmission/Transaxle &/or Transmission Control Systems.
J2 CHECK THE DSM (Driver Seat Module) IGNITION SWITCH STATUS (IGN_SW) PID STATES
- Enter the following diagnostic mode on the scan tool: DataLogger- DSM (Driver Seat Module) PID: IGN_SW.
- Cycle the ignition switch in all positions while monitoring the DSM (Driver Seat Module) IGN_SW PID states.
Do the PID states agree with the selected positions?
Yes
GO to J3.
No
For vehicles equipped with an ignition lock cylinder and key, REFER to Instrument Panel, Gauges and Warning Indicators.
For vehicles equipped with passive entry/passive start, REFER to Steering Column.
J3 RETRIEVE DSM (Driver Seat Module) DTCs
- Operate the memory seat and memory mirrors in all directions through the full range of travel.
- Place the memory seat and memory mirrors in central travel positions.
- Enter the following diagnostic mode on the scan tool: Self Test- Driver Seat Module (DSM).
Are any DSM (Driver Seat Module) DTCs retrieved?
Yes
If DTCs B1952, B1956, B1960 and B1964 are all retrieved, GO to J10.
If DTCs B1953, B1957, B1961 and B1965 are all retrieved, GO to J10.
If only DTC B1534 or B1538 are retrieved, GO to J5.
If only DTC B1663, B1956 or B1957 are retrieved, GO to J11.
If only DTC B1664, B1952 or B1953 are retrieved, GO to J14.
If only DTC B1665, B1964 or B1965 are retrieved, GO to J17.
If only DTC B1960, B1961 or B1666 are retrieved, GO to J20.
For any other DSM (Driver Seat Module) DTCs, REFER to the Driver Seat Module (DSM) DTC Chart. Seats
No
GO to J4.
J4 MONITOR THE DSM (Driver Seat Module) PIDs AND CHECK THE DSM (Driver Seat Module) FOR CORRECT MEMORY SET SWITCH INPUTS
- Enter the following diagnostic mode on the scan tool: DataLogger- DSM (Driver Seat Module) PIDs.
- Memory 1 recall switch status (MEM_1)
- Memory 2 recall switch status (MEM_2)
- Monitor the DSM (Driver Seat Module) PIDs while activating the memory SET switch, recall 1 and recall 2 buttons.
Do the PID states agree with the switch button positions?
Yes
GO to J10.
No
GO to J5.
J5 CHECK THE MEMORY SET SWITCH
- Ignition OFF.
- Disconnect: Memory SET Switch C2094.
- Using the following table to check the memory SET switch, measure the resistance between the memory SET switch pins, component side, while pressing and releasing the indicated switch buttons and compare the results to the table.
Switch Button Pins Ohms Memory SET 1 2 and 7 Less than 20 when pressed
Greater than 10,000 when released Memory SET 2 6 and 7 Less than 20 when pressed
Greater than 10,000 when released
Is the memory SET switch OK?
Yes
GO to J6.
No
INSTALL a new memory SET switch. REFER to Memory Set Switch Memory Set Switch. CLEAR the DTCs. REPEAT the self-test.
J6 CHECK THE MEMORY SET SWITCH GROUND FOR AN OPEN
- Ignition OFF.
- Depower the SRS (Supplemental Restraint System). Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Restraints and Safety Systems &/or Air Bag Systems.
- Disconnect: Driver Seat Side Air Bag C328.
- WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable.
- Measure the resistance between memory SET switch C2094-7, circuit GD115 (BK/GY), harness side and ground.
Is the resistance less than 5 ohms?
Yes
GO to J7.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
J7 CHECK THE MEMORY SET SWITCH CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: DSM (Driver Seat Module) C3299C.
- Ignition ON.
- Measure the voltage between:
- memory SET switch C2094-2, circuit CPS15 (VT/WH), harness side and ground.
- memory SET switch C2094-6, circuit CPS16 (YE), harness side and ground.
Is any voltage present on any circuits?
Yes
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
No
GO to J8.
J8 CHECK THE MEMORY SET SWITCH CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between:
- memory SET switch C2094-2, circuit CPS15 (VT/WH), harness side and ground.
- memory SET switch C2094-6, circuit CPS16 (YE), harness side and ground.
Are the resistances greater than 10,000 ohms?
Yes
GO to J9.
No
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
J9 CHECK THE MEMORY SET SWITCH CIRCUITS FOR AN OPEN
- Measure the resistance between:
- DSM (Driver Seat Module) C3299C-16, circuit CPS15 (VT/WH), harness side and memory SET switch C2094-2, circuit CPS15 (VT/WH), harness side.
- DSM (Driver Seat Module) C3299C-17, circuit CPS16 (YE), harness side and memory SET switch C2094-6, circuit CPS16 (YE), harness side.
Are the resistances less than 5 ohms?
Yes
INSTALL a new DSM (Driver Seat Module). REFER to Driver Seat Module (DSM) Service and Repair. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
No
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
J10 MONITOR THE DSM (Driver Seat Module) PIDs
- Enter the following diagnostic mode on the scan tool: DataLogger- DSM (Driver Seat Module) PIDs.
- Driver Power Seat Front Up/Down Sense (SFNT_MT)
- Driver Power Seat Forward/Backward Sense (SFWD_MT)
- Driver Power Seat Recline Sense (SRCL_MT)
- Driver Power Seat Rear Up/Down Sense (SREARMT)
- Operate the memory seat and memory mirrors in all directions through the full range of travel while monitoring the PIDs.
Does each PID indicate the sensor is operational throughout each associated motor's full range of travel?
Yes
INSTALL a new DSM (Driver Seat Module). REFER to Driver Seat Module (DSM) Service and Repair. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
No
If front up/down position sensor PID value indicates not present, GO to J11.
If rear up/down position sensor PID value indicates not present, GO to J14.
If forward/rearward position sensor PID value indicates not present, GO to J17.
If recline position sensor PID value indicates not present, GO to J20.
J11 CHECK THE FRONT HEIGHT POSITION SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Depower the SRS (Supplemental Restraint System). Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Restraints and Safety Systems &/or Air Bag Systems.
- Disconnect: Driver Seat Side Air Bag C328.
- Disconnect: DSM (Driver Seat Module) C3299B.
- Disconnect: Driver Seat Front Height Motor C382.
- WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable.
- Ignition ON.
- Measure the voltage between:
- driver seat front height motor C382-3, circuit RPS13 (GN/OG), harness side and ground.
- driver seat front height motor C382-4, circuit VPS10 (BU/GN), harness side and ground.
Is any voltage present on either circuit?
Yes
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
No
GO to J12.
J12 CHECK FRONT HEIGHT POSITION SENSOR CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between:
- driver seat front height motor C382-3, circuit RPS13 (GN/OG), harness side and ground.
- driver seat front height motor C382-4, circuit VPS10 (BU/GN), harness side and ground.
Are the resistances greater than 10,000 ohms?
Yes
GO to J13.
No
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
J13 CHECK FRONT HEIGHT POSITION SENSOR CIRCUITS FOR AN OPEN
- Measure the resistance between:
- driver seat front height motor C382-3, circuit RPS13 (GN/OG), harness side and DSM (Driver Seat Module) C3299B-8, circuit RPS13 (GN/OG), harness side.
- driver seat front height motor C382-4, circuit VPS10 (BU/GN), harness side and DSM (Driver Seat Module) C3299B-4, circuit VPS10 (BU/GN), harness side.
Are the resistances less than 5 ohms?
Yes
INSTALL a new seat track assembly. REFER to Seat Track Seat Track. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
No
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
J14 CHECK THE REAR HEIGHT POSITION SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Depower the SRS (Supplemental Restraint System). Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Restraints and Safety Systems &/or Air Bag Systems.
- Disconnect: Driver Seat Side Air Bag C328.
- Disconnect: DSM (Driver Seat Module) C3299B.
- Disconnect: Driver Seat Rear Height Motor C363.
- WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable.
- Ignition ON.
- Measure the voltage between:
- driver seat rear height motor C363-3, circuit RPS13 (GN/OG), harness side and ground.
- driver seat rear height motor C363-4, circuit VPS11 (GN/BN), harness side and ground.
Is voltage present on either circuit?
Yes
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
No
GO to J15.
J15 CHECK THE REAR HEIGHT POSITION SENSOR CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between:
- driver seat rear height motor C363-3, circuit RPS13 (GN/OG), harness side and ground.
- driver seat rear height motor C363-4, circuit VPS11 (GN/BN), harness side and ground.
Are the resistances greater than 10,000 ohms?
Yes
GO to J16.
No
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
J16 CHECK THE REAR HEIGHT POSITION SENSOR CIRCUITS FOR AN OPEN
- Measure the resistance between:
- driver seat rear height motor C363-3, circuit RPS13 (GN/OG), harness side and DSM (Driver Seat Module) C3299B-8, circuit RPS13 (GN/OG), harness side.
- driver seat rear height motor C363-4, circuit VPS11 (GN/BN), harness side and DSM (Driver Seat Module) C3299B-3, circuit VPS11 (GN/BN), harness side.
Are the resistances less than 5 ohms?
Yes
INSTALL a new seat track assembly. REFER to Seat Track Seat Track. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
No
REPAIR the circuit(s) in question. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
J17 CHECK THE HORIZONTAL POSITION SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Depower the SRS (Supplemental Restraint System). Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Restraints and Safety Systems &/or Air Bag Systems.
- Disconnect: Driver Seat Side Air Bag C328.
- Disconnect: DSM (Driver Seat Module) C3299B.
- Disconnect: Driver Seat Horizontal Motor C362.
- WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable.
- Ignition ON.
- Measure the voltage between:
- driver seat horizontal motor C362-3, circuit RPS13 (GN/OG), harness side and ground.
- driver seat horizontal motor C362-4, circuit VPS09 (BN/BU), harness side and ground.
Is voltage present on either circuit?
Yes
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
No
GO to J18.
J18 CHECK THE HORIZONTAL POSITION SENSOR CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between:
- driver seat horizontal motor C362-3, circuit RPS13 (GN/OG), harness side and ground.
- driver seat horizontal motor C362-4, circuit VPS09 (BN/BU), harness side and ground.
Are the resistances greater than 10,000 ohms?
Yes
GO to J19.
No
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
J19 CHECK THE HORIZONTAL POSITION SENSOR CIRCUITS FOR AN OPEN
- Measure the resistance between:
- driver seat horizontal motor C362-3, circuit RPS13 (GN/OG), harness side and DSM (Driver Seat Module) C3299B-8, circuit RPS13 (GN/OG), harness side.
- driver seat horizontal motor C362-4, circuit VPS09 (BN/BU), harness side and DSM (Driver Seat Module) C3299B-14, circuit VPS09 (BN/BU), harness side.
Are the resistances less than 5 ohms?
Yes
INSTALL a new seat track assembly. REFER to Seat Track Seat Track. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
No
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
J20 CHECK THE RECLINER POSITION SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Depower the SRS (Supplemental Restraint System). Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Restraints and Safety Systems &/or Air Bag Systems.
- Disconnect: Driver Seat Side Air Bag C328.
- Disconnect: DSM (Driver Seat Module) C3299B.
- Disconnect: Driver Seat Recliner Motor C368.
- WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable.
- Ignition ON.
- Measure the voltage between:
- driver seat recliner motor C368-3, circuit RPS13 (GN/OG), harness side and ground.
- driver seat recliner motor C368-4, circuit VPS12 (GY/OG), harness side and ground.
Is voltage present on either circuit?
Yes
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
No
GO to J21.
J21 CHECK THE RECLINER POSITION SENSOR CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between:
- driver seat recliner motor C368-3, circuit RPS13 (GN/OG), harness side and ground.
- driver seat recliner motor C368-4, circuit VPS12 (GY/OG), harness side and ground.
Are the resistances greater than 10,000 ohms?
Yes
GO to J22.
No
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
J22 CHECK THE RECLINER POSITION SENSOR CIRCUITS FOR AN OPEN
- Measure the resistance between:
- driver seat recliner motor C368-3, circuit RPS13 (GN/OG), harness side and DSM (Driver Seat Module) C3299B-8, circuit RPS13 (GN/OG), harness side.
- driver seat recliner motor C368-4, circuit VPS12 (GY/OG), harness side and DSM (Driver Seat Module) C3299B-20, circuit VPS12 (GY/OG), harness side.
Are the resistances less than 5 ohms?
Yes
INSTALL a new seat recliner motor. REFER to Seat Recliner Motor Seat Recliner Motor. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.
No
REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328.
REPOWER the SRS (Supplemental Restraint System). REFER to Restraints and Safety Systems &/or Air Bag Systems.