PREPARATION
Special Service Tool
The actual shapes of the tools may differ from those illustrated here.

Commercial Service Tool

Precaution
Symptom diagnosisThree-way catalyst
The three-way catalyst is an emission control
device installed in the exhaust system. Exhaust
gases in the three-way catalyst are burned at
high temperatures to help reduce pollutants.
WARNING
The exhaust gas and the exhaust system
are very hot. Keep people, animals
or flammable material ...
B2636, B2637, B2638, B2639, B2654, B2655 mode door motor
Description
COMPONENT DESCRIPTION
Mode Door Motor
The mode door motor (1) is attached to the heater & cooling unit
assembly.
It rotates so that air is discharged from the outlet set by the
A/C
auto amp. Motor rotation is conveyed to a link which activates the
mode door.
D ...
Tweeter
Description
The AV control unit sends audio signals to the tweeters using the front door
speaker circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the AV control unit and speaker connectors for the following:
Proper connection
Damage
Disconnected or loose terminals
2.HARNESS CHE ...