DESCRIPTION
- Perform either of the following and check that the driver seat moves rearward:
- With the power switch off and the shift lever in P, unfasten the driver seat seat belt.
- With the shift lever in P and the driver seat seat belt unfastened, turn the power switch off.
- Perform either of the following and check that the driver seat moves forward:
- With the shift lever in P, fasten the driver seat seat belt.
- With the shift lever in P, turn the power switch from off to on (IG).
WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE:
- The front power seat control system uses the CAN communication system.
First, confirm that there is no malfunction in the CAN communication
system. Refer to the How to Proceed with Troubleshooting procedure.
Click here 
- Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
HINT: When troubleshooting a function, first make sure that the function is set to the default setting.
Click here PROCEDURE
| 1. |
CHECK FRONT POWER SEAT OPERATION | (a) Check that each function of the power seat operates normally by using the front power seat switch LH.
Click here
|
Result | Proceed to | |
Power seat functions operate normally |
A | | All power seat functions do not operate |
B | | One or more power seat motors do not operate |
C |
| B |
 | GO TO OTHER FLOW CHART (Front Power Seat does not Operate with Front Power Seat Switch) |
| C |
| GO TO OTHER FLOW CHART (One or more Power Seat Motors do not Operate) |
|
A |
 | |
| 2. |
READ VALUE USING TECHSTREAM | (a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Driver Seat / Data List.
(e) Read the Data List according to the display on the Techstream. Body Electrical > Driver Seat > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
Driver Seat Buckle SW | Driver seat belt buckle switch |
ON or OFF | ON: Driver seat belt fastened
OFF: Driver seat belt unfastened |
- | Body Electrical > Driver Seat > Data List
|
Tester Display | | Driver Seat Buckle SW |
OK: On the Techstream screen, ON or OFF is displayed accordingly.
| NG |
| GO TO STEP 5 |
|
OK | |
| |
| 3. |
REPLACE POSITION CONTROL ECU ASSEMBLY |
(a) Temporarily replace the position control ECU assembly with a new or known good one.
Click here
|
NEXT | |
| |
| 4. |
CHECK POWER SEAT POWER EASY ACCESS SYSTEM |
(a) Check the power seat power easy access system. Click here
OK: Power seat power easy access system is normal.
| OK |
| END (POSITION CONTROL ECU ASSEMBLY WAS DEFECTIVE) |
| NG |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| 5. |
INSPECT FRONT SEAT INNER BELT ASSEMBLY LH |
(a) Remove the front seat inner belt assembly LH. Click here
(b) Inspect the front seat inner belt assembly LH.
Click here
| NG |
| REPLACE FRONT SEAT INNER BELT ASSEMBLY LH |
|
OK | |
| |
| 6. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT INNER BELT ASSEMBLY LH - BODY GROUND) |
(a) Disconnect the R32 position control ECU assembly connector. (b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
R32-27 (DBCL) - K54-5 (RDC) |
Always | Below 1 Ω | |
R32-27 (DBCL) or K54-5 (RDC) - Body ground |
Always | 10 kΩ or higher | |
K54-6 (E) - Body ground |
Always | Below 1 Ω |
| OK |
| REPLACE POSITION CONTROL ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR | | 
