DESCRIPTION
When the seat heater switch on the air conditioning control assembly is operated, the air conditioning amplifier assembly receives the signal. The air conditioning amplifier assembly receives the signal and operates the front seat heater.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Air Conditioner / Data List.
(e) Check the value(s) by referring to the table below.
Air Conditioner:
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
FR Seat Heater Temperature |
Front seat RH side seat heater temperature / min: -29.7°C or max: 59.55°C |
Within range from 36 to 43°C (96 to 109°F) |
Front seat heater is on |
OK:
The display is as specified in the normal condition column.
Result
Result |
Proceed to |
---|---|
NG |
A |
OK |
B |
B |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
|
2. |
CHECK HARNESS AND CONNECTOR (BATTERY - FRONT SEAT CUSHION HEATER ASSEMBLY RH - BODY GROUND) |
(a) Disconnect the S41 front seat cushion heater assembly RH connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
S41-3 (B1) - Body ground |
Ignition switch ON |
11 to 14 V |
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
S41-5 (E) - Body ground |
Always |
Below 1 Ω |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY RH |
(a) Remove the front seat cushion heater assembly RH (See page ).
(b) Inspect the front seat cushion heater assembly RH (See page ).
NG |
REPLACE FRONT SEAT CUSHION HEATER ASSEMBLY RH |
|
4. |
INSPECT FRONT SEATBACK HEATER ASSEMBLY RH |
(a) Remove the front seatback heater assembly RH (See page ).
(b) Inspect the front seatback heater assembly RH (See page ).
NG |
REPLACE FRONT SEATBACK HEATER ASSEMBLY RH |
|
5. |
CHECK FRONT SEAT CUSHION HEATER ASSEMBLY RH |
(a) Temporarily replace the front seat cushion heater assembly RH with a new or known good one (See page ).
(b) Check that the seat heater system is operated normally.
OK:
The seat heater system is operated normally.
Result
Result |
Proceed to |
---|---|
NG |
A |
OK |
B |
B |
END (FRONT SEAT CUSHION HEATER ASSEMBLY RH WAS DEFECTIVE) |
|
6. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - FRONT SEAT CUSHION HEATER ASSEMBLY RH) |
(a) Disconnect the A35 and A36 air conditioning amplifier assembly connector.
(b) Disconnect the S41 front seat cushion heater assembly RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A35-24 (SHP+) - S41-1 (B) |
Always |
Below 1 Ω |
A36-31 (TSR) - S41-2 (TH) |
Always |
Below 1 Ω |
A35-15 (SG-2) - S41-6 (E) |
Always |
Below 1 Ω |
A35-24 (SHP+) or S41-1 (B) - Body ground |
Always |
10 kΩ or higher |
A36-31 (TSR) or S41-2 (TH) - Body ground |
Always |
10 kΩ or higher |
A35-15 (SG-2) or S41-6 (E) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
7. |
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY |
(a) Temporarily replace the air conditioning amplifier assembly with a new or known good one (See page ).
(b) Check that the seat heater system is operated normally.
OK:
The seat heater system is operated normally.
Result
Result |
Proceed to |
---|---|
NG |
A |
OK |
B |
A |
END (AIR CONDITIONING AMPLIFIER ASSEMBLY WAS DEFECTIVE) |
B |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
Wireless Door Lock Tuner Circuit Malfunction (B1242)
DESCRIPTION
The door control receiver is used to receive radio waves relating to the entry
functions of the electrical key transmitter sub-assembly. The certification ECU
(smart key ECU assembly) decodes the requested electrical key transmitter sub-assembly
by identifying a key code based on ...
Invalid Data Received From Vehicle Dynamics Control Module (U0416)
DESCRIPTION
This DTC is detected if a wheel speed malfunction signal is sent from the skid
control ECU (brake actuator assembly).
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
U0416
Invalid Data Received From V ...
Reassembly
REASSEMBLY
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for both the LH and RH sides.
The procedure described below is for the LH side.
PROCEDURE
1. INSTALL CLEARANCE LIGHT BULB
(a) Install the clearance light bulb to the clearance light socket.
(b) Turn t ...