DESCRIPTION
There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 6 (CA3H) and 21 (CA3L) of the central gateway ECU (network gateway ECU) is below 54 Ω.
Detection Item |
Trouble Area |
---|---|
Resistance between terminals 6 (CA3H) and 21 (CA3L) of central gateway ECU (network gateway ECU) is below 54 Ω. |
|
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 SHORT 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.
*a |
Front view of wire harness connector (to No. 6 CAN junction connector) |
*b |
to Central Gateway ECU (Network Gateway ECU) |
*c |
to Navigation Receiver Assembly (for Navigation Receiver Type) or Radio and Display Receiver Assembly (for Radio and Display Type) |
- |
- |
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) |
J22-11 (CANH) - J22-22 (CANL) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Navigation receiver assembly*1 or Radio and display receiver assembly*2 |
Result |
Proceed to |
---|---|
OK |
A |
NG (Central gateway ECU (network gateway ECU) CAN main line) |
B |
NG (ECU or sensor CAN branch lines) |
C |
A | ![]() |
REPLACE NO. 6 CAN JUNCTION CONNECTOR |
C | ![]() |
GO TO STEP 3 |
|
2. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 6 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
(a) Disconnect the N36 central gateway ECU (network gateway ECU) connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK | ![]() |
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
NG | ![]() |
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
3. |
CHECK FOR SHORT IN CAN BUS LINES (ECU, SENSOR) |
(a) Reconnect the CAN junction connector. |
|
(b) Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the short circuited CAN branch line is connected.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
N36-6 (CA3H) - N36-21 (CA3L) |
Cable disconnected from negative (-) battery terminal |
54 to 69 Ω |
*a |
Component with harness connected (Central Gateway ECU (Network Gateway ECU)) |
HINT:
If the resistance becomes normal (between 54 and 69 Ω) when the connector is disconnected from the ECU or sensor, there may be a short in the ECU or sensor.
OK | ![]() |
REPLACE ECU OR SENSOR |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE STEERING INTERMEDIATE SHAFT ASSEMBLY
(a) Put matchmarks on the steering intermediate shaft assembly and steering main
shaft assembly.
(b) Remove the bolt and steering intermediate shaft assembly.
2. REMOVE UPPER STEERING COLUMN BRACKET WITH SWITCH ASSEMBLY (w ...
Cleaning and protecting the vehicle exterior
Perform the following to protect the vehicle and maintain it in prime condition.
● Working from top to bottom, liberally apply water to the vehicle body, wheel
wells and underside of the vehicle to remove any dirt and dust.
Wash the vehicle body using a sponge or soft cloth, such as a cham ...
Transfer L4 Position Switch Circuit (C1268)
DESCRIPTION
A-TRAC is activated if wheel skid is detected while the transfer is in the L4
position.
DTC Code
DTC Detecting Condition
Trouble Areas
C1268
L4 detection switch signal input to skid control ECU (master cylinder
solenoid ...