Seat Vibrator Does Not Operate
SEAT: SEAT VIBRATION SYSTEM: Seat Vibrator does not Operate
- Seat Vibrator does not Operate
DESCRIPTION
The position control ECU operates the seat vibrator based on the signals from the seat vibrator switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - BATTERY AND BODY GROUND)
(a) for LH Side:
Disconnect the f43 ECU connector.
(b) for RH Side:
Disconnect the f39 ECU connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
for LH Side
for RH Side
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:
for LH Side
for RH Side
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. CHECK POSITION CONTROL ECU (SWITCH CIRCUIT)
(a) Remove the position control ECU with its connectors still connected.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:
for LH Side
for RH Side
NG -- CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - SEAT VIBRATOR SWITCH)
OK -- Continue to next step.
3. CHECK POSITION CONTROL ECU
(a) Remove the position control ECU with its connectors still connected.
(b) Using an oscilloscope, check the waveform.
Measurement condition (for LH Side)
Measurement condition (for RH Side)
OK:
Waveform is as shown in the illustration.
Result
C -- CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - SEAT VIBRATOR)
B -- REPLACE POSITION CONTROL ECU Disassembly
A -- REPLACE POSITION CONTROL ECU Disassembly
4. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - SEAT VIBRATOR SWITCH)
(a) for LH Side:
Disconnect the f43 ECU connector.
(b) for RH Side:
Disconnect the f39 ECU connector.
(c) Disconnect the z71 switch connector.
(d) Measure the resistance according to the values in the table below.
Standard resistance:
for LH Side
for RH Side
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CHECK SEAT VIBRATOR SWITCH (OPERATION)
(a) Replace the seat vibrator switch with a new or normally operating one. Perform an operation inspection.
OK:
Seat vibrator operates normally.
Result
C -- REPLACE POSITION CONTROL ECU Disassembly
B -- REPLACE POSITION CONTROL ECU Disassembly
A -- END (SEAT VIBRATOR SWITCH IS DEFECTIVE)
6. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - SEAT VIBRATOR)
(a) for LH Side:
(1) Disconnect the f43 ECU connector.
(2) Disconnect the f22 vibrator connector.
(b) for RH Side:
(1) Disconnect the f39 ECU connector.
(2) Disconnect the f2 vibrator connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
for LH Side
for RH Side
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
7. CHECK POSITION CONTROL ECU (OPERATION)
(a) Replace the position control ECU with a new or normally operating one. Perform an operation inspection.
OK:
Seat vibrator operates normally.
Result
C -- REPLACE SEPARATE TYPE REAR SEATBACK ASSEMBLY (SEAT VIBRATOR) Removal
B -- REPLACE SEPARATE TYPE REAR SEATBACK ASSEMBLY (SEAT VIBRATOR) Removal
A -- END (POSITION CONTROL ECU IS DEFECTIVE)