DESCRIPTION
There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 6 (CA3H) and 21 (CA3L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher.
Detection Item |
Trouble Area |
---|---|
Resistance between terminals 6 (CA3H) and 21 (CA3L) of central gateway ECU (network gateway ECU) is 70 Ω or higher. |
|
This malfunction is not related to the lines of a CAN branch or to ECUs or sensors connected to a CAN branch.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
NOTICE:
Click here
Click here
Click here
DTC check procedure: Turn the ignition switch to ON and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.
Click here
HINT:
PROCEDURE
1. |
CHECK FOR OPEN IN CAN BUS LINES (NO. 6 CAN JUNCTION CONNECTOR) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the No. 6 CAN junction connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
Connected to |
---|---|---|---|
J22-9 (CANH) - J22-20 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
Central gateway ECU (network gateway ECU) |
J22-10 (CANH) - J22-21 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
Central gateway ECU (network gateway ECU) |
*a |
Front view of wire harness connector (to No. 6 CAN Junction Connector) |
*b |
to Central Gateway ECU (Network Gateway ECU) |
OK | ![]() |
REPLACE NO. 6 CAN JUNCTION CONNECTOR |
|
2. |
CHECK FOR OPEN IN CAN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 6 CAN JUNCTION CONNECTOR) |
(a) Reconnect the J22 No. 6 CAN junction connector.
(b) Disconnect the central gateway ECU (network gateway ECU) connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
N36-6 (CA3H) - N36-19 (CAYH) |
Cable disconnected from negative (-) battery terminal |
Below 1 Ω |
N36-21 (CA3L) - N36-20 (CAYL) |
Cable disconnected from negative (-) battery terminal |
Below 1 Ω |
*a |
Front view of wire harness connector (to Central Gateway ECU (Network Gateway ECU)) |
OK | ![]() |
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
NG | ![]() |
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 6 CAN JUNCTION CONNECTOR) |
Operation Check
OPERATION CHECK
1. OPERATION DESCRIPTION
(a) Push-button start function:
(1) When the electrical key transmitter sub-assembly is in a detection area inside
the vehicle and the brake pedal is depressed, the engine is started by pressing
the engine switch.
(2) When the electrical key transmitt ...
Utility
UTILITY
NOTICE:
If the forward recognition camera has been replaced due to a malfunction in the
lane departure alert system, be sure to perform Recognition Camera/Target Position
Memory and Optical Axis Learning. Otherwise all systems that use the forward recognition
camera may be affected.
...
How To Proceed With Troubleshooting
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
2.
CUSTOMER PROBLEM ANALYSIS
Click here
NEXT
...