ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT SEAT HEATER CONTROL SUB-ASSEMBLY LH
(a) Disconnect the b2 seat heater control sub-assembly LH connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
b2-6 (E) - Body ground |
Always |
Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
b2-1 (SWL) - b2-6 (E) |
Ignition switch ON Seat heater switch LH off |
Below 1 V |
Ignition switch ON Seat heater switch LH on |
11 to 14 V |
|
b2-4 (B) - b2-6 (E) |
Ignition switch off |
Below 1 V |
Ignition switch ON |
11 to 14 V |
*a |
Front view of wire harness connector (to Seat Heater Control Sub-assembly LH) |
If the result is not as specified, there may be a malfunction on the wire harness side.
(d) Connect the b2 seat heater control sub-assembly LH connector.
(e) Measure the voltage according to the value(s) in the table below. Standard Voltage:
If the result is not as specified, the seat heater control sub-assembly LH may have a malfunction. |
|
2. INSPECT SEAT HEATER CONTROL SUB-ASSEMBLY RH
(a) Disconnect the a2 seat heater control sub-assembly RH connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
a2-6 (E) - Body ground |
Always |
Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
a2-1 (SWR) - a2-6 (E) |
Ignition switch ON Seat heater switch RH off |
Below 1 V |
Ignition switch ON Seat heater switch RH on |
11 to 14 V |
|
a2-4 (B1) - a2-6 (E) |
Ignition switch off |
Below 1 V |
Ignition switch ON |
11 to 14 V |
*a |
Front view of wire harness connector (to Seat Heater Control Sub-assembly RH) |
If the result is not as specified, there may be a malfunction on the wire harness side.
(d) Connect the a2 seat heater control sub-assembly RH connector.
(e) Measure the voltage according to the value(s) in the table below. Standard Voltage:
If the result is not as specified, the seat heater control sub-assembly RH may have a malfunction. |
|
System Diagram
SYSTEM DIAGRAM
Communication Table
Transmitter
Receiver
Signal
Communication Line
Air conditioning amplifier assembly
ECM
A/C idle up request signal
CAN
...
Lost Communication with ECM (C1437)
DESCRIPTION
The skid control ECU receives signals from the ECM via the CAN communication
system.
DTC Code
DTC Detection Condition
Trouble Area
C1437
When the IG1 terminal voltage is 10 V or highe ...