DESCRIPTION
Detection Item |
Symptom |
Trouble Area |
---|---|---|
Central Gateway ECU Communication Stop Mode |
Communication system DTCs (DTCs that start with U) that correspond to "Central Gateway ECU Communication Stop Mode" in "DTC Combination Table" are output. Click here |
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
NOTICE:
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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.
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HINT:
PROCEDURE
1. |
CHECK FOR OPEN IN CAN LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) CAN MAIN OR BRANCH LINE) |
(a) Disconnect the cable from the negative (-) battery terminal. |
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(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:
Bus 2
Tester Connection |
Condition |
Specified Condition |
---|---|---|
N36-18 (CA4H) - N36-17 (CA4L) |
Cable disconnected from negative (-) battery terminal |
54 to 69 Ω |
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 |
Tester Connection |
Condition |
Specified Condition |
---|---|---|
N36-15 (CA5H) - N36-9 (CAXH) |
Cable disconnected from negative (-) battery terminal |
Below 1 Ω |
N36-16 (CA5L) - N36-24 (CAXL) |
Cable disconnected from negative (-) battery terminal |
Below 1 Ω |
*A |
Bus 2 |
*B |
Bus 3 |
*C |
Bus 5 |
*a |
Front view of wire harness connector (to Central Gateway ECU (Network Gateway ECU)) |
Result |
Proceed to |
---|---|
OK |
A |
NG (Bus 2 Branch Lines) |
B |
NG (Bus 3 or Bus 5 Main Lines) |
C |
B | ![]() |
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
C | ![]() |
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
|
2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(b) Connect the cable to the negative (-) battery terminal.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
N36-1 (BATT) - Body ground |
Always |
11 to 14 V |
N36-2 (ACC) - Body ground |
Ignition switch ACC |
11 to 14 V |
N36-11 (IG1) - Body ground |
Ignition switch IG |
11 to 14 V |
N36-12 (IG2) - Body ground |
Ignition switch IG |
11 to 14 V |
*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 HARNESS OR CONNECTOR |
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE FRONT BRAKE SHOE
(a) Using SST, remove the shoe return spring from the front brake shoe.
SST: 09921-00010
(b) Using needle-nose pliers, remove the return spring.
(c) Using SST, remove the shoe hol ...
Terminals Of Ecu
TERMINALS OF ECU
1. TERMINALS OF ECU
Text in Illustration
*a
Component without harness connected
(Skid Control ECU (Master Cylinder Solenoid))
-
-
Terminal No. (Symbol)
Terminal Description
S1-1 (GND1 ...
Clock
Adjusts the hours
Adjusts the minutes
■The clock is displayed when
The engine switch is in the ACC or ON position.
■When disconnecting and reconnecting battery terminals
The time display will automatically be set to 1:00. ...