Rear Power Seat Control System Reclining Motor Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT NO. 3 SEATBACK FRAME SUB-ASSEMBLY (RECLINING MOTOR)
CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 3 SEATBACK FRAME LH)
CHECK FOLD SEAT CONTROL ECU LH
CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 3 SEATBACK FRAME RH)
CHECK FOLD SEAT CONTROL ECU RH
REAR POWER SEAT CONTROL SYSTEM - Reclining Motor Circuit |
DESCRIPTION
The fold seat control ECU receives switch operation signals from the No. 1 and No. 2 fold seat switches and rear power seat switch and activates the power seat motors. At this time, the Hall IC detects the actuation of the seatback and sends a seatback actuation signal to the fold seat control ECU. The fold seat control ECU uses signals from the Hall IC to detect if an object is caught or if any other abnormal condition has occurred.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT NO. 3 SEATBACK FRAME SUB-ASSEMBLY (RECLINING MOTOR) |
for LH Side:
Remove the No. 3 seatback frame sub-assembly LH (LandCruiser RM0000045DH00EX.html).
Check if the No. 3 seatback frame moves smoothly when the battery is connected to the reclining motor connector terminals.
for RH Side:
Remove the No. 3 seatback frame sub-assembly RH (LandCruiser RM0000045DH00EX.html).
Check if the No. 3 seatback frame moves smoothly when the battery is connected to the reclining motor connector terminals.
- OK:
Measurement Condition
| Specified Condition
|
Battery positive (+) → 3 (FWD)
Battery negative (-) → 4 (BACK)
| Forward
|
Battery positive (+) → 4 (BACK)
Battery negative (-) → 3 (FWD)
| Backward
|
ResultResult
| Proceed to
|
OK (for LH Side)
| A
|
OK (for RH Side)
| B
|
NG (for LH Side)
| C
|
NG (for RH Side)
| D
|
| 2.CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 3 SEATBACK FRAME LH) |
Disconnect the d2 and d1 ECU connectors.
Disconnect the d3 No. 3 seatback frame connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
d1-37 (SV2) - d3-5 (HLV)
| Always
| Below 1 Ω
|
d1-37 (SV2) - Body ground
| Always
| 10 kΩ or higher
|
d1-19 (SRCL) - d3-2 (HLS)
| Always
| Below 1 Ω
|
d1-19 (SRCL) - Body ground
| Always
| 10 kΩ or higher
|
d1-24 (SG2) - d3-6 (HLG)
| Always
| Below 1 Ω
|
d1-24 (SG2) - Body ground
| Always
| 10 kΩ or higher
|
d2-1 (RCL+) - d3-3 (FWD)
| Always
| Below 1 Ω
|
d2-1 (RCL+) - Body ground
| Always
| 10 kΩ or higher
|
d2-5 (RCL-) - d3-4 (BACK)
| Always
| Below 1 Ω
|
d2-5 (RCL-) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 3.CHECK FOLD SEAT CONTROL ECU LH |
Remove the fold seat control ECU LH with its connectors still connected (LandCruiser RM0000045DH00EX.html).
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Condition
| Specified Condition
|
d1-37 (SV2) - d1-24 (SG2)
| Ignition switch off
| Below 1 V
|
Ignition switch ON
| 5.5 to 8 V
|
d1-19 (SRCL) - d1-24 (SG2)
| Motor is operating
| Pulse generation
|
d2-1 (RCL+) - Body ground
| Rear power seat switch LH forward
| 11 to 14 V
|
d2-5 (RCL-) - Body ground
| Rear power seat switch LH backward
| 11 to 14 V
|
Text in Illustration*a
| Component with harness connected
(Fold Seat Control ECU LH)
|
| 4.CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 3 SEATBACK FRAME RH) |
Disconnect the c2 and c1 ECU connectors.
Disconnect the c3 No. 3 seatback frame connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
c1-37 (SV2) - c3-5 (HLV)
| Always
| Below 1 Ω
|
c1-37 (SV2) - Body ground
| Always
| 10 kΩ or higher
|
c1-19 (SRCL) - c3-2 (HLS)
| Always
| Below 1 Ω
|
c1-19 (SRCL) - Body ground
| Always
| 10 kΩ or higher
|
c1-24 (SG2) - c3-6 (HLG)
| Always
| Below 1 Ω
|
c1-24 (SG2) - Body ground
| Always
| 10 kΩ or higher
|
c2-1 (RCL+) - c3-3 (FWD)
| Always
| Below 1 Ω
|
c2-1 (RCL+) - Body ground
| Always
| 10 kΩ or higher
|
c2-5 (RCL-) - c3-4 (BACK)
| Always
| Below 1 Ω
|
c2-5 (RCL-) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK |
|
|
|
| CHECK FOLD SEAT CONTROL ECU RH |
|
| 5.CHECK FOLD SEAT CONTROL ECU RH |
Remove the fold seat control ECU RH with its connectors still connected (LandCruiser RM0000045DP00EX.html).
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Condition
| Specified Condition
|
c1-37 (SV2) - c1-24 (SG2)
| Ignition switch off
| Below 1 V
|
Ignition switch ON
| 5.5 to 8 V
|
c1-19 (SRCL) - c1-24 (SG2)
| Motor is operating
| Pulse generation
|
c2-1 (RCL+) - Body ground
| Rear power seat switch RH forward
| 11 to 14 V
|
c2-5 (RCL-) - Body ground
| Rear power seat switch RH backward
| 11 to 14 V
|
Text in Illustration*a
| Component with harness connected
(Fold Seat Control ECU RH)
|
