Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM1000000018DL6 |
Model Year Start: 2018 |
Model: Sienna |
Prod Date Range: [11/2017 -
] |
Title: NETWORKING: CAN COMMUNICATION SYSTEM: Air Conditioning Amplifier Communication Stop Mode; 2018 - 2020 MY Sienna [11/2017 - ] |
Air Conditioning Amplifier Communication Stop Mode
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DESCRIPTION
Detection Item
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Symptom
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Trouble Area
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Air Conditioning Amplifier Communication Stop Mode
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Either condition is met:
|
-
Power source circuit of air conditioning amplifier assembly
-
Air conditioning amplifier assembly ground circuit
-
Air conditioning amplifier assembly branch wire or connector
-
Air conditioning amplifier assembly
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
-
Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.
-
When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.
PROCEDURE
1.
|
CHECK CAN BUS LINE FOR DISCONNECTION (AIR CONDITIONING AMPLIFIER ASSEMBLY BRANCH WIRE)
|
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the air conditioning amplifier assembly connector.
|
|
(c) 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
|
D75-11 (CANH) - D75-12 (CANL)
|
Cable disconnected from negative (-) battery terminal
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54 to 69 Ω
|
Text in Illustration
*a
|
Rear view of wire harness connector
(to Air Conditioning Amplifier Assembly)
|
NG |
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REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO AIR CONDITIONING AMPLIFIER ASSEMBLY
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OK
|
|
|
2.
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CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - POWER SOURCE)
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(a) Disconnect the air conditioning amplifier assembly connector.
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D75-14 (GND) - Body Ground
|
Cable disconnected from negative (-) battery terminal
|
Below 1 Ω
|
(c) Reconnect the cable to the negative (-) battery terminal.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page
)
(d) 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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D75-1 (IG+) - Body Ground
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Ignition switch ON
|
11 to 14 V
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D75- 21 (B)- Body Ground
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Always
|
11 to 14 V
|
Text in Illustration
*a
|
Rear view of wire harness connector
(to Air Conditioning Amplifier Assembly)
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|