Parts location

System diagram

Problem symptoms table
Hint:
Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

On-vehicle inspection

Hint:
The ptc thermistor's resistance increases when the power seat switch is held down even after the power seat has been moved to the maximum in one direction. If the resistance increases beyond a specified level, current is cut to prevent a short circuit.
Notice:
Standard: 4 to 90 seconds
Notice:
The inspection should be performed with the seat installed in the vehicle.
Measure the amount of time elapsed before current is automatically cut (the sound of the motor has stopped).
Standard: 4 to 90 seconds
Seat
Seat heater systemCheck for intermittent problems
Hint:
Inspect the vehicle's ecm using check mode. Intermittent
problems are easier to detect with the intelligent tester when
the ecm is in check mode. In check mode, the ecm uses 1
trip detection logic, which is more sensitive to malfunctions
than normal mode (default), which uses 2 trip detec ...
Short to gnd in can bus line
(2005/11-2006/01)
Description
There may be a short circuit between the can bus line and gnd when there is
resistance between
terminals 6 (canh) and 4 (cg) or terminals 14 (canl) and 4 (cg) of the dlc3.
Wiring diagram
Inspection procedure
Notice:
Turn the ignition switch off b ...
Evaporator temperature sensor circuit
Description
The no. 1 Cooler thermistor (evaporator temperature sensor) is installed on
the evaporator in the air
conditioning unit to detect the temperature of the cooled air that has passed
through the evaporator and to
control the air conditioner. It sends signals to the air conditioni ...