DESCRIPTION
There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central gateway ECU (network gateway ECU) is below 54 Ω.
Detection Item |
Trouble Area |
---|---|
Resistance between terminals 18 (CA4H) and 17 (CA4L) 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:
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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 SHORT IN CAN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the No. 1 CAN junction connector.
Text in Illustration
*a |
Front view of wire harness connector (to No. 1 CAN Junction Connector) |
*b |
to Brake Booster Assembly (Skid Control ECU) (for Hydraulic Brake Booster) or Brake Actuator Assembly (Skid Control ECU) (for Vacuum Brake Booster) |
*c |
to No. 2 CAN Junction Connector |
*d |
to Air Conditioning Amplifier Assembly |
*e |
to ECM |
*f |
to Central Gateway ECU (Network Gateway ECU) |
*g |
to Airbag Sensor Assembly |
*h |
to 4 Wheel Drive Control ECU (for 4WD) |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
Connected to |
---|---|---|---|
J16-1 (CANH) - J16-11 (CANL) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Brake booster assembly (skid control ECU)*1 or brake actuator assembly (skid control ECU)*2 |
J16-2 (CANH) - J16-12 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
No. 2 CAN junction connector |
J16-3 (CANH) - J16-13 (CANL) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Air conditioning amplifier assembly |
J16-5 (CANH) - J16-15 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
ECM |
J16-6 (CANH) - J16-16 (CANL) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Central gateway ECU (network gateway ECU) |
J16-7 (CANH) - J16-17 (CANL) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Airbag sensor assembly |
J16-8 (CANH) - J16-18 (CANL) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
4 wheel drive control ECU*3 |
Result |
Proceed to |
---|---|
OK |
A |
NG (ECM CAN main line) |
B |
NG (Central gateway ECU (network gateway ECU) CAN branch line) |
C |
NG (No. 2 CAN junction connector CAN main line) |
D |
NG (ECU or sensor CAN branch lines) |
E |
A |
REPLACE NO. 1 CAN JUNCTION CONNECTOR |
B |
REPAIR OR REPLACE CAN MAIN LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - ECM) |
D |
GO TO STEP 3 |
E |
GO TO STEP 4 |
|
2. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 1 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:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
J16-6 (CANH) - J16-16 (CANL) |
Cable disconnected from negative (-) battery terminal |
1 MΩ or higher |
*a |
Front view of wire harness connector (to No. 1 CAN Junction Connector) |
*b |
to Central Gateway ECU (Network Gateway ECU) |
OK |
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
NG |
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
3. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR) |
(a) Reconnect the J16 No. 1 CAN Junction Connector.
(b) Disconnect the No. 2 CAN junction connector.
Text in Illustration
*a |
Front view of wire harness connector (to No. 2 CAN Junction Connector) |
*b |
to No. 1 CAN Junction Connector |
*c |
to Door Control and Tire Pressure Monitoring System Receiver Assembly (w/ Tire Pressure Warning System and Tire Inflation Pressure Display Function) |
*d |
to Main Body ECU (Multiplex Network Body ECU) |
*e |
to Certification ECU (Smart Key ECU Assembly) (w/ Smart Key System) |
*f |
to Combination Meter Assembly |
*g |
to Spiral Cable with Sensor Sub-assembly |
- |
- |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
Connected to |
---|---|---|---|
J3-1 (CANH) - J3-11 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
No. 1 CAN junction connector |
J3-2 (CANH) - J3-12 (CANL) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Door control and tire pressure monitoring system receiver assembly*1 |
J3-4 (CANH) - J3-14 (CANL) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Main body ECU (multiplex network body ECU) |
J3-5 (CANH) - J3-15 (CANL) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Certification ECU (smart key ECU assembly)*2 |
J3-6 (CANH) - J3-16 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
Combination meter assembly |
J3-7 (CANH) - J3-17 (CANL) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Spiral cable with sensor sub-assembly |
Result |
Proceed to |
---|---|
OK |
A |
NG (Combination meter assembly CAN main line) |
B |
NG (No. 1 CAN junction connector CAN main line) |
C |
NG (ECU or sensor CAN branch lines) |
D |
A |
REPLACE NO. 2 CAN JUNCTION CONNECTOR |
B |
REPAIR OR REPLACE CAN MAIN LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY) |
C |
REPAIR OR REPLACE CAN MAIN LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR) |
|
4. |
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 |
---|---|---|
N36-18 (CA4H) - N36-17 (CA4L) |
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 |
Disposal
DISPOSAL
CAUTION / NOTICE / HINT
HINT:
The tire pressure warning valve and transmitter is powered by a lithium battery.
When disposing of the tire pressure warning valve and transmitter, remove the battery
and dispose of it correctly.
PROCEDURE
1. DISPOSE OF TIRE PRESSURE WARNING VALVE AND ...
Brake
General Maintenance
GENERAL MAINTENANCE
PROCEDURE
1. INSPECT BRAKE LINE PIPES AND HOSES
HINT:
Work in a well-lighted area. Turn the front wheels fully to the right or left
before beginning.
(a) Check all the brake lines and hoses for:
Damage
Wear
Deformation
Cracks
...
Open in ABS Solenoid Relay Circuit (C146E,C146F)
DESCRIPTION
The ABS solenoid relay supplies power to the ABS solenoid and TRAC solenoid.
The solenoid relay is turned on 1.5 seconds after the ignition switch is turned
ON, and is turned off if an open or short in the solenoid is detected by the self
diagnosis performed when the engine starts ...