Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM1000000018DNF |
Model Year Start: 2018 |
Model: Sienna |
Prod Date Range: [11/2017 - 08/2018] |
Title: NETWORKING: CAN COMMUNICATION SYSTEM: Open in Bus 5 Main Bus Line; 2018 MY Sienna [11/2017 - 08/2018] |
Open in Bus 5 Main Bus Line
|
DESCRIPTION
There may be an open circuit in one of the bus 5 main lines when the resistance between terminals 15 (CA5H) and 16 (CA5L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher.
Detection Item
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Trouble Area
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Resistance between terminals 15 (CA5H) and 16 (CA5L) of central gateway ECU (network gateway ECU) is 70 Ω or higher.
|
-
Bus 5 CAN main wire or connector
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Central gateway ECU (network gateway ECU)
-
No. 2 CAN junction connector
-
No. 3 CAN junction connector
-
No. 2 CAN junction terminal
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This malfunction is not related to the lines of a bus 5 branch or to ECUs or sensors connected a bus 5 branch.
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.
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CHECK FOR OPEN IN CAN BUS WIRE (NO. 2 CAN JUNCTION CONNECTOR)
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(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the D205 and D206 No. 2 CAN junction connectors.
*1
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No. 2 CAN Junction Connector
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-
|
-
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*a
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Rear view of wire harness connector
(to No. 3 CAN Junction Connector)
|
-
|
-
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Wiring Color:
Code
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Color (CANH Side)
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Color (CANL Side)
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Connected to
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D205
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B
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W
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No. 3 CAN junction connector
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D206
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V
|
W
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Central Gateway ECU (Network Gateway ECU)
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(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
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Connected to
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D205-1 (CANH) - D205-2 (CANL)
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Cable disconnected from negative (-) battery terminal
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108 to 132 Ω
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No. 3 CAN junction connector
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D206-1 (CANH) - D206-2 (CANL)
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Cable disconnected from negative (-) battery terminal
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108 to 132 Ω
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Central gateway ECU (network gateway ECU)
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Result
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Proceed to
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OK
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A
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NG (Central gateway ECU (network gateway ECU) CAN main wire)
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B
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NG (No. 3 CAN junction connector CAN main wire)
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C
|
A |
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REPLACE NO. 2 CAN JUNCTION CONNECTOR
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B
|
|
|
2.
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CHECK FOR OPEN IN CAN BUS WIRE (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
|
(a) Reconnect the D205 and D206 No. 2 CAN junction connectors.
(b) Disconnect the central gateway ECU (network gateway ECU) connector.
|
|
*a
|
Front view of wire harness connector
(to Central Gateway ECU (Network Gateway ECU))
|
|
|
(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
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D202-15 (CA5H) - D202-16 (CA5L)
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Cable disconnected from negative (-) battery terminal
|
108 to 132 Ω
|
NG |
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REPAIR OR REPLACE CAN MAIN BUS WIRE OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 2 CAN JUNCTION CONNECTOR)
|
3.
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CHECK FOR OPEN IN CAN BUS WIRE (NO. 3 CAN JUNCTION CONNECTOR)
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(a) Reconnect the D205 and D206 No. 2 CAN junction connectors.
(b) Disconnect the K46 and K47 No. 3 CAN junction connectors.
*1
|
No. 3 CAN Junction Terminal
|
-
|
-
|
*a
|
Rear view of wire harness connector
(to No. 2 CAN Junction Connector)
|
-
|
-
|
Wiring Color:
Code
|
Color (CANH Side)
|
Color (CANL Side)
|
Connected to
|
K46
|
B
|
W
|
No. 2 CAN junction connector
|
K47
|
L
|
W
|
No. 2 CAN junction terminal
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
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Connected to
|
K46-1 (CANH) - K46-2 (CANL)
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Cable disconnected from negative (-) battery terminal
|
108 to 132 Ω
|
No. 2 CAN junction connector
|
K47-1 (CANH) - K47-2 (CANL)
|
Cable disconnected from negative (-) battery terminal
|
108 to 132 Ω
|
No. 2 CAN junction terminal
|
Result
|
Proceed to
|
OK
|
A
|
NG (No. 2 CAN junction connector CAN main wire)
|
B
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NG (No. 2 CAN junction terminal CAN main wire)
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C
|
A |
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REPLACE NO. 3 CAN JUNCTION CONNECTOR
|
B |
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REPAIR OR REPLACE CAN MAIN BUS WIRE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 3 CAN JUNCTION CONNECTOR)
|
C
|
|
|
4.
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CHECK FOR OPEN IN CAN BUS WIRE (NO. 2 CAN JUNCTION TERMINAL)
|
(a) Reconnect the K46 and K47 No. 3 CAN junction connectors.
(b) Disconnect the No. 2 CAN junction terminal connector.
(c) 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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K45-3 (CANH) - K45-2 (CANL)
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Cable disconnected from negative (-) battery terminal
|
108 to 132 Ω
|
|
|
*a
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Front view of wire harness connector
(to No. 2 CAN Junction Terminal)
|
|
|
OK |
|
REPLACE NO. 2 CAN JUNCTION TERMINAL
|
NG |
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REPAIR OR REPLACE CAN MAIN BUS WIRE OR CONNECTOR (NO. 2 CAN JUNCTION TERMINAL - NO. 3 CAN JUNCTION CONNECTOR)
|
|