LS 460 RWD V8-4.6L (1UR-FSE) (2010)
Seat Heater: Initial Inspection and Diagnostic Overview
How To Proceed With Troubleshooting
SEAT: SEAT HEATER SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING
HINT
*
Use these procedures to troubleshoot the seat heater system.
*
*: Use the Techstream.
1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
NEXT -- Continue to next step.
3. INSPECT ELECTRIC POWER CONTROL SYSTEM*
(a) Using the Techstream, check if the electric power control system is functioning normally.
(b) Using the Techstream, check the electric power control system's load control history See: Power and Ground Distribution/Testing and
Inspection/Initial Inspection and Diagnostic Overview/Operation Check.
B -- Go to ELECTRIC POWER CONTROL SYSTEM See: Power and Ground Distribution/Testing and Inspection/Initial Inspection
and Diagnostic Overview/How to Proceed With Troubleshooting
A -- Continue to next step.
4. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*
(a) Using the Techstream to check if the LIN communication system is functioning normally.
B -- Go to LIN COMMUNICATION SYSTEM See: Powertrain Management/Computers and Control Systems/Information
Bus/Testing and Inspection/Initial Inspection and Diagnostic Overview/LIN Communication System
A -- Continue to next step.
5. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*
(a) Use the Techstream to check if the CAN communication system is functioning normally.