Last Modified: 11-20-2023 |
6.11:8.1.0 |
Doc ID: RM100000001R3ZA |
Model Year Start: 2021 |
Model: Camry |
Prod Date Range: [10/2020 -
] |
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): Operation not Accepted Even If Air Conditioning Switch is Operated; 2021 - 2024 MY Camry [10/2020 - ] |
Operation not Accepted Even If Air Conditioning Switch is Operated
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DESCRIPTION
If the air conditioning system cannot be operated using the air conditioning control assembly, the following suspected areas may be the cause.
Symptom
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Factor
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Air conditioning system cannot be operated using air conditioning control assembly
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(With the exception of the switch indicators, no inputs are reflected when other switches operated)
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LIN communication malfunction between air conditioning amplifier assembly and air conditioning control assembly
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Short to +B or ground in air conditioning amplifier assembly circuit
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Air conditioning amplifier assembly malfunction
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Air conditioning control assembly malfunction
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Harness or connector
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WIRING DIAGRAM
PROCEDURE
(a) Check for DTCs.
Body Electrical > Air Conditioner > Trouble Codes
OK:
DTC B14B2 is not output.
OK
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|
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2.
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CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BATTERY AND BODY GROUND)
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*a
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Front view of wire harness connector
(to Air Conditioning Amplifier Assembly)
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(a) Disconnect the K54 air conditioning amplifier assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
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Condition
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Specified Condition
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K54-4 (GND) - Body ground
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Always
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Below 1 Ω
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(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
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Switch Condition
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Specified Condition
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K54-1 (B) - Body ground
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Always
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11 to 14 V
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K54-2 (IG+) - Body ground
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Ignition switch ON
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11 to 14 V
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Ignition switch off
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Below 1 V
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NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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