Inspection Procedure
- INSPECT FRONT SEAT HEATER SWITCH (INDICATOR)
- Check that the climate control indicator is blinking.
Result:
RESULT REFERENCEResult Proceed to Front climate control switch indicator is blinking A Rear climate control switch indicator is blinking B B: Go to step 4
A: Go to next step
- INSPECT FRONT SEAT HEATER SWITCH (FRONT) (SEE INSPECTION
)
NG: REPLACE CLIMATE CONTROL SWITCH
OK: Go to next step
- CHECK WIRE HARNESS (SEAT CLIMATE CONTROL BLOWER (CLIMATE CONTROL ECU) - CLIMATE CONTROL SWITCH)
HINT:
When the indicator of driver's side is blinking, check the driver's side connector. When the indicator of passenger's side is blinking, check the passenger's side connector.
- Disconnect the C20 or C21 blower connector.
- Measure the resistance of the wire harness side connector.
Standard:
Driver side
TESTER CONNECTION AND SPECIFIED CONDITION - DRIVER SIDETester Connection Condition Specified Condition C20-12 (VS) - C20-13 (V5) MAX. WARM --> MAX. COOL 0 --> 5 kΩ C20-9 (VG) - C20-12 (VS) MAX. COOL --> MAX. WARM 0 --> 5 kΩ Passenger side
TESTER CONNECTION AND SPECIFIED CONDITION - PASSENGER SIDETester Connection Condition Specified Condition C21-12 (VS) - C21-13 (V5) MAX. WARM --> MAX. COOL 0 --> 5 kΩ C21-9 (VG) - C21-12 (VS) MAX. COOL --> MAX. WARM 0 --> 5 kΩ Fig 1: Identifying Seat Climate Control Blower Connector Terminals And Climate Control Switch Connector TerminalsCourtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: REPLACE SEAT CLIMATE CONTROL BLOWER (CLIMATE CONTROL ECU)
- INSPECT CLIMATE CONTROL SWITCH (SEE INSPECTION
)
NG: REPLACE CLIMATE CONTROL SWITCH
OK: Go to next step
- CHECK WIRE HARNESS (SEAT CLIMATE CONTROL BLOWER (CLIMATE CONTROL ECU) - CLIMATE CONTROL SWITCH)
HINT:
When the indicator of rear left side is blinking, check the rear left side connector. When the indicator of rear right side is blinking, check the rear right side connector.
- Disconnect the C27 or C29 blower connector.
- Measure the resistance of the wire harness side connector.
Standard:
Rear LH
TESTER CONNECTION AND SPECIFIED CONDITION - REAR LHTester Connection Condition Specified Condition C27-17 (VS) - C27-18 (V5) MAX. WARM --> MAX. COOL 0 --> 5 kΩ C27-16 (VG) - C27-17 (VS) MAX. COOL --> MAX. WARM 0 --> 5 kΩ Rear RH
TESTER CONNECTION AND SPECIFIED CONDITION - REAR RHTester Connection Condition Specified Condition C29-17 (VS) - C29-18 (V5) MAX. WARM --> MAX. COOL 0 --> 5 kΩ C29-16 (VG) - C29-17 (VS) MAX. COOL --> MAX. WARM 0 --> 5 kΩ Fig 2: Identifying Seat Climate Control Blower Connector Terminals And Climate Control Switch Connector TerminalsCourtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: REPLACE SEAT CLIMATE CONTROL BLOWER (CLIMATE CONTROL ECU)