Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM1000000018DNH |
Model Year Start: 2018 |
Model: Sienna |
Prod Date Range: [11/2017 - 08/2018] |
Title: NETWORKING: CAN COMMUNICATION SYSTEM: Check Bus 5 Line for Short to +B; 2018 MY Sienna [11/2017 - 08/2018] |
Check Bus 5 Line for Short to +B
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DESCRIPTION
There may be a short circuit between one of the CAN bus lines and +B when no resistance exists between terminal 15 (CA5H) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 16 (CA5L) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3.
Detection Item
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Trouble Area
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No resistance exists between terminal 15 (CA5H) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 16 (CA5L) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3.
|
-
Short to +B in bus 5 CAN main wires
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Short to +B in bus 5 CAN branch wires
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Central gateway ECU (network gateway ECU)
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Millimeter wave radar sensor assembly*1
-
Clearance warning ECU assembly*2
-
Parking assist ECU*3
-
Forward recognition camera*1
-
Rear television camera assembly*3
-
Blind Spot Monitor Sensor RH*4
-
No. 2 CAN junction connector
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No. 3 CAN junction connector
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No. 2 CAN junction terminal
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-
*1: w/ Toyota Safety Sense P
-
*2: w/ Intuitive Parking Assist System
-
*3: w/ Panoramic View Monitor System
-
*4: w/ Blind Spot Monitor System
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 SHORT TO B+ IN CAN BUS WIRE (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 2 CAN JUNCTION CONNECTOR)
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(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the central gateway ECU (network gateway ECU) connector.
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|
*1
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DLC3
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*a
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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) - D16-16 (BAT)
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Cable disconnected from negative (-) battery terminal
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6 kΩ or higher
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D202-16 (CA5L) - D16-16 (BAT)
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Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
NG
|
|
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(a) Reconnect the D202 central gateway ECU (network gateway ECU) connector.
NEXT
|
|
|
3.
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CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 2 CAN JUNCTION TERMINAL - NO. 3 CAN JUNCTION CONNECTOR)
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(a) Disconnect the No. 2 CAN junction terminal connector.
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|
*1
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DLC3
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*a
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Rear view of wire harness connector
(to No. 2 CAN Junction Terminal)
|
|
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(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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K45-3 (CANH) - D16-16 (BAT)
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Cable disconnected from negative (-) battery terminal
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6 kΩ or higher
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K45-2 (CANL) - D16-16 (BAT)
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Cable disconnected from negative (-) battery terminal
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6 kΩ or higher
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OK |
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REPLACE NO. 2 CAN JUNCTION TERMINAL
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NG
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|
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(a) Reconnect the K45 No. 2 CAN junction terminal connector.
NEXT
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|
|
5.
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CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 2 CAN JUNCTION CONNECTOR)
|
(a) Disconnect the No. 2 CAN junction connector.
*1
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No. 2 CAN Junction Connector
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*2
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DLC3
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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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-
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Code
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Color (CANH Side)
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Color (CANL Side)
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Connect 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
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W
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Central Gateway ECU (Network Gateway ECU)
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D207
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GR
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W
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Millimeter Wave Radar Sensor Assembly*1
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D208
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G
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W
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Forward Recognition Camera*1
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D209
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P
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W
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Blind Spot Monitor Sensor RH*2
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D210
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LG
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W
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Clearance Warning ECU Assembly*3
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D211
|
L
|
W
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Parking Assist ECU*4
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D212
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R
|
W
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Driving Support ECU Assembly*1
|
-
*1: Pre-collision System
-
*2: Blind Spot Monitor System
-
*3: w/ Intuitive Parking Assist System
-
*4: Panoramic View Monitor System
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
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Connect to
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D205-1 (CANH) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
No. 3 CAN junction connector
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D205-2 (CANL) - D16-16 (BAT)
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Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
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D206-1 (CANH) - D16-16 (BAT)
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Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
Central gateway ECU (network gateway ECU)
|
D206-2 (CANL) - D16-16 (BAT)
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Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
D207-1 (CANH) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
Millimeter wave radar sensor assembly*1
|
D207-2 (CANL) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
D208-1 (CANH) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
Forward recognition camera*1
|
D208-2 (CANL) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
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D209-1 (CANH) - D16-16 (BAT)
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Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
Blind spot monitor sensor RH*2
|
D209-2 (CANL) - D16-16 (BAT)
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Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
D210-1 (CANH) - D16-16 (BAT)
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Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
Clearance warning ECU assembly*3
|
D210-2 (CANL) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
D211-1 (CANH) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
Parking assist ECU*4
|
D211-2 (CANL) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
D212-1 (CANH) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
Driving support ECU assembly*1
|
D212-2 (CANL) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
-
*1: w/ Toyota Safety Sense P
-
*2: w/ Blind Spot Monitor System
-
*3: w/ Intuitive Parking Assist System
-
*4: w/ Panoramic View Monitor System
Result
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
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NG (ECU or sensor CAN branch wires)
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D
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A |
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REPLACE NO. 2 CAN JUNCTION CONNECTOR
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B |
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REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
|
C
|
|
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(a) Reconnect the No. 2 CAN junction connector.
NEXT
|
|
|
7.
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CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 3 CAN JUNCTION CONNECTOR)
|
(a) Disconnect the No. 3 CAN junction connectors.
*1
|
No. 3 CAN Junction Connector
|
*2
|
DLC3
|
*a
|
Rear view of wire harness connector
(to No. 2 CAN Junction Connector)
|
-
|
-
|
Code
|
Color (CANH Side)
|
Color (CANL Side)
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Connect to
|
K46
|
B
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W
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No. 2 CAN Junction Connector
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K47
|
L
|
W
|
No. 2 CAN Junction Terminal
|
K48
|
P
|
W
|
Rear Television Camera Assembly*
|
-
*: w/ Panoramic View Monitor System
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
Connect to
|
K46-1 (CANH) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
No. 2 CAN junction connector
|
K46-2 (CANL) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
K47-1 (CANH) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
No. 2 CAN junction terminal
|
K47-2 (CANL) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
K48-1 (CANH) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
Television camera assembly*
|
K48-2 (CANL) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
-
*: w/ Panoramic View Monitor System
Result
Result
|
Proceed to
|
OK
|
A
|
NG (No. 2 CAN junction connector CAN main wire)
|
B
|
NG (No. 2 CAN junction terminal CAN main wire)
|
C
|
NG (ECU or sensor CAN branch wires)
|
D
|
A |
|
REPLACE NO. 3 CAN JUNCTION CONNECTOR
|
B |
|
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR)
|
C |
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REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL)
|
D
|
|
|
8.
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CHECK FOR SHORT TO B+ IN CAN BUS WIRE (ECU, SENSOR)
|
(a) Reconnect the CAN junction connector.
|
|
*1
|
DLC3
|
*a
|
Component with harness connected
(Central Gateway ECU (Network Gateway ECU))
|
|
|
(b) Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the bus line shorted to +B is connected
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D202-15 (CA5H) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
D202-16 (CA5L) - D16-16 (BAT)
|
Cable disconnected from negative (-) battery terminal
|
6 kΩ or higher
|
HINT:
If the resistance changes to 6 kΩ or higher when the connector is disconnected from the ECU or sensor, there may be a short in the ECU or sensor.
OK |
|
REPLACE CORRESPONDING ECU OR SENSOR
|
NG |
|
REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR CAN BRANCH WIRES OR CONNECTOR
|
|