Standard Voltage:
Text in Illustration
NG -- REPLACE A/C AMPLIFIER
OK -- REPLACE AIR CONDITIONING HARNESS See: Heating and Air Conditioning/Housing Assembly HVAC/Service and
Repair/Overhaul/Disassembly
From 08/2009
HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: B1497/97: BUS IC Communication Malfunction
B1497/97 - BUS IC Communication Malfunction
DESCRIPTION
The air conditioning harness connects the A/C amplifier and each servo. The A/C amplifier supplies power and sends operation instructions to each
servo through the air conditioning harness. Each servo sends the damper position information to the A/C amplifier.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. INSPECT A/C AMPLIFIER
(a) Remove the A/C amplifier with the connectors still connected.
(b) Measure the resistance according to the value(s) in the table below.
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