Climate Control System does not Operate on Driver Side

SEAT: CLIMATE CONTROL SEAT SYSTEM: Climate Control System does not Operate on Driver Side

Climate Control System does not Operate on Driver Side

DESCRIPTION

When the seat climate switch is operated, the seat climate control ECU receives the signal and operates the air seat.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK FUSE (RR-IG1-3, D S/HTR, D-IG1-3)
(a) Remove the RR-IG1-3 fuse from the luggage room junction block.
(b) Remove the D S/HTR and D-IG1-3 fuses from the main body ECU.
(c) Measure the resistance of the fuses.
Standard resistance:

NG -- REPLACE FUSE
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - BATTERY AND BODY GROUND)

(a) Disconnect the e34 ECU connector.
(b) 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 HARNESS AND CONNECTOR (SEAT CLIMATE SWITCH LH - BATTERY AND BODY GROUND)

(a) Disconnect the L67 switch connector.
(b) 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.

4. INSPECT CLIMATE CONTROL SWITCH LH

(a) Remove the L67 switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPLACE CLIMATE CONTROL SWITCH LH
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - SEAT CLIMATE SWITCH LH AND BODY GROUND)

(a) Disconnect the e34 ECU connector.
(b) Disconnect the L67 switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE SEAT CLIMATE CONTROL ECU