Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VK16 |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 -
] |
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: B1451/51; Compressor Solenoid Circuit; 2016 - 2020 MY Sienna [12/2015 - ] |
DTC
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B1451/51
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Compressor Solenoid Circuit
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DESCRIPTION
In this circuit, the compressor and magnetic clutch receives a refrigerant compression demand signal from the air conditioning amplifier.
Based on this signal, the compressor and magnetic clutch changes the amount of compressor output.
DTC Code
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DTC Detection Condition
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Trouble Area
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B1451/51
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Open or short in compressor and magnetic clutch solenoid circuit
|
-
Compressor and magnetic clutch (solenoid valve)
-
Harness or connector between air conditioning amplifier and compressor and magnetic clutch (solenoid valve)
-
Air conditioning amplifier
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WIRING DIAGRAM
PROCEDURE
1.
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INSPECT COMPRESSOR AND MAGNETIC CLUTCH (SOLENOID VALVE)
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(a) Disconnect the compressor and magnetic clutch (solenoid valve) 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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B34-2 (SOL+) - B34-1 (SOL-)
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20°C (68°F)
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10 to 11 Ω
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Text in Illustration
*a
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Component without harness connected
(Compressor and magnetic clutch (Solenoid Valve))
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OK
|
|
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2.
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CHECK HARNESS AND CONNECTOR (COMPRESSOR AND MAGNETIC CLUTCH (SOLENOID VALVE) - BODY GROUND)
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(a) 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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B34-1 (SOL-) - Body ground
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Always
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Below 1 Ω
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Text in Illustration
*a
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Front view of wire harness connector
(to Compressor and magnetic clutch (Solenoid Valve))
|
|
|
NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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OK
|
|
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3.
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CHECK HARNESS AND CONNECTOR (COMPRESSOR AND MAGNETIC CLUTCH (SOLENOID VALVE) - AIR CONDITIONING AMPLIFIER)
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(a) Disconnect the air conditioning amplifier connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
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Specified Condition
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D75-2 (SOL+) - B34-2 (SOL+)
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Always
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Below 1 Ω
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D75-2 (SOL+) - Body ground
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Always
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10 kΩ or higher
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Result
Result
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Proceed to
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NG
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A
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OK (When troubleshooting according to Problem Symptoms Table)
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B
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OK (When troubleshooting according to the DTC)
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C
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A |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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B |
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PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
(See page
)
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|