B14F3
SEAT: CLIMATE CONTROL SEAT SYSTEM: B14F3: Overcurrent Detected in Cushion Peltier
B14F3 - Overcurrent Detected in Cushion Peltier
DESCRIPTION
The seat climate control ECU stops outputs to the seat climate control controller if a short, etc. in the seat climate control controller, wire harness or ECU interior circuit causes overcurrent.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK FOR DTC
(a) Check for DTCs Climate Control Seat System.
Result
B -- CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - SEAT CLIMATE CONTROL CONTROLLER RH)
C -- CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - JOINING CONNECTOR AND REAR SEATBACK CLIMATE CONTROL BLOWER LH)
D -- CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - JOINING CONNECTOR AND REAR SEATBACK CLIMATE CONTROL BLOWER RH)
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - SEAT CLIMATE CONTROL CONTROLLER LH)
(a) Disconnect the e34 ECU connector.
(b) Disconnect the e33 and e51 climate control controller connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK SEAT CLIMATE CONTROL CONTROLLER LH (for SEAT CUSHION)
(a) Replace the seat climate control controller LH (for Seat Cushion) Disassembly.
(b) Check for DTC Climate Control Seat System.
OK:
DTC is not output
NG -- CHECK SEAT CLIMATE CONTROL CONTROLLER LH (for SEATBACK)
OK -- END (SEAT CLIMATE CONTROL CONTROLLER LH [for SEAT CUSHION] WAS DEFECTIVE)
4. CHECK SEAT CLIMATE CONTROL CONTROLLER LH (for SEATBACK)
(a) Replace the seat climate control controller LH (for Seatback) Disassembly.
(b) Check for DTC Climate Control Seat System.
OK:
DTC is not output
NG -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
OK -- END (SEAT CLIMATE CONTROL CONTROLLER LH [for SEATBACK] WAS DEFECTIVE)
5. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - SEAT CLIMATE CONTROL CONTROLLER RH)
(a) Disconnect the e4 ECU connector.
(b) Disconnect the e2 and e21 climate control controller connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. CHECK SEAT CLIMATE CONTROL CONTROLLER RH (for SEAT CUSHION)
(a) Replace the seat climate control controller RH Disassembly.
(b) Check for DTC Climate Control Seat System.
OK:
DTC is not output
NG -- CHECK SEAT CLIMATE CONTROL CONTROLLER RH (for SEATBACK)
OK -- END (SEAT CLIMATE CONTROL CONTROLLER RH [for SEAT CUSHION] WAS DEFECTIVE)
7. CHECK SEAT CLIMATE CONTROL CONTROLLER RH (for SEATBACK)
(a) Replace the seat climate control controller RH Disassembly.
(b) Check for DTC Climate Control Seat System.
OK:
DTC is not output
NG -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
OK -- END (SEAT CLIMATE CONTROL CONTROLLER RH [for SEATBACK] WAS DEFECTIVE)
8. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - JOINING CONNECTOR AND REAR SEATBACK CLIMATE CONTROL BLOWER LH)
(a) Disconnect the f28 ECU connector.
(b) Disconnect the fp2 joining connector.
(c) Disconnect the f32 rear seatback climate control blower connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
9. CHECK HARNESS AND CONNECTOR (JOINING CONNECTOR - SEAT CLIMATE CONTROL CONTROLLER LH)
(a) Disconnect the fp2 joining connector.
(b) Disconnect the p3 climate control controller connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
10. CHECK SEAT CLIMATE CONTROL CONTROLLER LH
(a) w/o Ottoman:
Replace the seat climate control controller LH Disassembly.
(b) w/ Ottoman:
Replace the seat climate control controller LH Disassembly.
(c) Check for DTC Climate Control Seat System.
OK:
DTC is not output
NG -- CHECK REAR SEAT BACK CLIMATE CONTROL BLOWER LH
OK -- END (SEAT CLIMATE CONTROL CONTROLLER LH WAS DEFECTIVE)
11. CHECK REAR SEAT BACK CLIMATE CONTROL BLOWER LH
(a) w/o Ottoman:
Replace the rear seatback climate control blower LH Disassembly.
(b) w/ Ottoman:
Replace the rear seatback climate control blower LH Disassembly.
(c) Check for DTC Climate Control Seat System.
OK:
DTC is not output
Result
B -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
C -- END (REAR SEATBACK CLIMATE CONTROL BLOWER LH WAS DEFECTIVE)
A -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
12. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - JOINING CONNECTOR AND REAR SEATBACK CLIMATE CONTROL BLOWER RH)
(a) Disconnect the f8 ECU connector.
(b) Disconnect the fp1 joining connector.
(c) Disconnect the f12 rear seatback climate control blower connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
13. CHECK HARNESS AND CONNECTOR (JOINING CONNECTOR - SEAT CLIMATE CONTROL CONTROLLER RH)
(a) Disconnect the fp1 joining connector.
(b) Disconnect the p1 climate control controller connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
14. CHECK SEAT CLIMATE CONTROL CONTROLLER RH
(a) w/o Ottoman:
Replace the seat climate control controller RH Disassembly.
(b) w/ Ottoman:
Replace the seat climate control controller RH Disassembly.
(c) Check for DTC Climate Control Seat System.
OK:
DTC is not output
NG -- CHECK REAR SEAT BACK CLIMATE CONTROL BLOWER RH
OK -- END (SEAT CLIMATE CONTROL CONTROLLER RH WAS DEFECTIVE)
15. CHECK REAR SEAT BACK CLIMATE CONTROL BLOWER RH
(a) w/o Ottoman:
Replace the rear seatback climate control blower RH Disassembly.
(b) w/ Ottoman:
Replace the rear seatback climate control blower RH Disassembly.
(c) Check for DTC Climate Control Seat System.
OK:
DTC is not output
Result
B -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
C -- END (REAR SEATBACK CLIMATE CONTROL BLOWER RH WAS DEFECTIVE)
A -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly