Toyota 4Runner: Front Power Seat does not Operate with Front Power Seat Switch
DESCRIPTION
When a signal is input into the front power seat switch LH (position control ECU), the ECU manages the signals received from the front power seat switch LH and operates each motor. When 2 or more signals are input, the motors only operate when the signals are from the slide switch and reclining switch.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - BATTERY AND BODY GROUND) |
|
(a) Disconnect the b18 and b19 front power seat switch LH connectors. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
b18-7 (+B1) - Body ground |
Always |
11 to 14 V |
|
b19-12 (SYSB) - Body ground |
Always |
11 to 14 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
b18-2 (GND1) - Body ground |
Always |
Below 1 Ω |
|
*a |
Front view of wire harness connector (to Front Power Seat Switch LH) |
| OK | .gif) |
REPLACE FRONT POWER SEAT SWITCH LH |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Slide Sensor Malfunction (B2650)
DESCRIPTION
When the front power seat switch LH does not receive a sensor signal despite
forward or backward movement of the seat by power seat motor operation, this DTC
is stored.
DT ...
Power Seat Position is not Memorized
DESCRIPTION
When the seat memory SET switch and a memory switch (M1 or M2) are pressed simultaneously,
the main body ECU commands the position control ECU through CAN communication to
record the ...
Other materials about Toyota 4Runner:
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT COOLER CONDENSER ASSEMBLY
(a) If the fins of the cooler condenser are dirty, clean them with water. Dry
the fins with compressed air.
NOTICE:
Do not damage the fins of the condenser.
(b) If a fin of the cooler ...
Initialization
INITIALIZATION
1. ZERO POINT CALIBRATION
NOTICE:
Make sure that the front passenger seat is not occupied before performing the
operation.
HINT:
Perform the zero point calibration and sensitivity check if any of the following
conditions apply.
...
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