DESCRIPTION
There may be a short circuit between the CAN bus lines when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 53 Ω.
Symptom | Trouble Area |
---|---|
The resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 53 Ω. |
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
Note
Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.
Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key, switches or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work.
The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the Precaution in the SRS.
Type A:
Type B:
When replacing the combination meter assembly, make sure to replace it with a new one.
Before replacing the certification ECU (smart key ECU assembly), refer to the service bulletin.
Tech Tips
Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.
Connectors that connect to the CAN junction connector can be distinguished by the color of their CAN bus lines. When the connectors have been disconnected from the CAN junction connector, reconnecting the connectors to non-original positions on the CAN junction connector does not affect system performance. However, it is preferred to reconnect the connectors to their original positions to avoid negative effects on the wiring such as tension on the wiring harnesses, and to make future maintenance easier.
When replacing the navigation receiver assembly, it is necessary to perform the vehicle contract setting for Connected Services.
PROCEDURE
CHECK FOR SHORT IN CAN BUS WIRES (DLC3 CAN BRANCH WIRE)
*a | Front view of DLC3 |
Disconnect the cable from the negative (-) battery terminal.
Disconnect the No. 1 CAN junction connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3 (CANH, CANL) |
OK |
CONNECT CONNECTOR
Reconnect the No. 1 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR SIDE)
*a | Front view of DLC3 |
Disconnect the No. 2 CAN junction connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
CONNECT CONNECTOR Click here |
OK |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR)
Measure the resistance according to the value(s) in the table below.
*a | Front view of wire harness connector (to No. 2 CAN Junction Connector) |
*b | to Certification ECU (Smart Key ECU Assembly) (w/ Entry and Start System) |
*c | to 4 Wheel Drive Control ECU (for 4WD) | *d | to ECM |
*e |
|
*f |
|
Standard Resistance | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
*2: for 4WD *3: w/ Audio and Visual System (for Radio and Display Type) *4: w/ Navigation System *5: for Automatic Air Conditioning System *6: for Manual Air Conditioning System (w/ PTC Heater) |
Result | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
A |
REPLACE NO. 2 CAN JUNCTION CONNECTOR |
C |
CONNECT CONNECTOR Click here |
D |
CONNECT CONNECTOR Click here |
E |
CONNECT CONNECTOR Click here |
F |
CONNECT CONNECTOR Click here |
G |
CONNECT CONNECTOR Click here |
H |
CONNECT CONNECTOR Click here |
I |
CONNECT CONNECTOR Click here |
J |
CONNECT CONNECTOR Click here |
K |
CONNECT CONNECTOR Click here |
B |
CONNECT CONNECTOR
Reconnect the No. 2 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (CERTIFICATION ECU BRANCH WIRE)
*a | Front view of wire harness connector (to Certification ECU [Smart Key ECU Assembly]) |
Disconnect the certification ECU (smart key ECU assembly) connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CERTIFICATION ECU (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 2 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (4 WHEEL DRIVE CONTROL ECU BRANCH WIRE)
*a | Front view of wire harness connector (to 4 Wheel Drive Control ECU) |
Disconnect the 4 wheel drive control ECU connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE 4 WHEEL DRIVE CONTROL ECU Click here |
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO 4 WHEEL DRIVE CONTROL ECU (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 2 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (ECM)
*a | Front view of wire harness connector (to ECM) |
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE ECM for 1TR-FE: REPLACE ECM Click here |
NG |
REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 2 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (ECM)
*a | Front view of wire harness connector (to ECM) |
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE ECM for 1KD-FTV: REPLACE ECM Click here |
NG |
REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 2 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (ECM)
*a | Front view of wire harness connector (to ECM) |
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE ECM for 1GD-FTV: REPLACE ECM Click here |
NG |
REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 2 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (ECM)
*a | Front view of wire harness connector (to ECM) |
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE ECM Click here |
NG |
REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 2 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (RADIO AND DISPLAY RECEIVER ASSEMBLY BRANCH WIRE)
*a | Front view of wire harness connector (to Radio and Display Receiver Assembly) |
Disconnect the radio and display receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here |
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO RADIO AND DISPLAY RECEIVER ASSEMBLY (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 2 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (NAVIGATION RECEIVER ASSEMBLY BRANCH WIRE)
*a | Front view of wire harness connector (to Navigation Receiver Assembly) |
Disconnect the navigation receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE NAVIGATION RECEIVER ASSEMBLY Click here |
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NAVIGATION RECEIVER ASSEMBLY (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 2 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (AIR CONDITIONING AMPLIFIER ASSEMBLY BRANCH WIRE)
*a | Rear view of wire harness connector (to Air Conditioning Amplifier Assembly) |
Disconnect the air conditioning amplifier assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here |
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO AIR CONDITIONING AMPLIFIER ASSEMBLY (TX+, TX-) |
CONNECT CONNECTOR
Reconnect the No. 2 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (AIR CONDITIONING AMPLIFIER ASSEMBLY BRANCH WIRE)
*a | Front view of wire harness connector (to Air Conditioning Amplifier Assembly) |
Disconnect the air conditioning amplifier assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here |
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO AIR CONDITIONING AMPLIFIER ASSEMBLY (TX+, TX-) |
CONNECT CONNECTOR
Reconnect the No. 2 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 CAN JUNCTION CONNECTOR)
Disconnect the No. 1 CAN junction connector.
*a | Front view of wire harness connector (to No. 1 CAN Junction Connector) |
*b | to Brake Actuator Assembly (Skid Control ECU) |
*c | to Airbag Sensor Assembly (w/ Airbag System) | *d | to Spiral with Sensor Cable Sub-assembly (Steering Angle Sensor) (w/ VSC) |
*e | to Combination Meter Assembly | *f | to No. 2 CAN Junction Connector |
*g | to Headlight Leveling ECU Assembly (for LED Headlight or w/ Headlight Cleaner System) | - | - |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
*2: for LED Headlight or w/ Headlight Cleaner System *3: w/ Airbag System |
Result | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
A |
REPLACE NO. 1 CAN JUNCTION CONNECTOR |
C |
CONNECT CONNECTOR Click here |
D |
CONNECT CONNECTOR Click here |
E |
CONNECT CONNECTOR Click here |
F |
CONNECT CONNECTOR Click here |
G |
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR) |
B |
CONNECT CONNECTOR
Reconnect the No. 1 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU BRANCH WIRE)
*A | w/ VSC |
*B | w/o VSC |
*a | Front view of wire harness connector (to Brake Actuator Assembly [Skid Control ECU]) |
Disconnect the brake actuator assembly (skid control ECU) connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
||||||
|
Result | |||
---|---|---|---|
|
OK |
REPLACE BRAKE ACTUATOR ASSEMBLY w/ VSC: REPLACE BRAKE ACTUATOR ASSEMBLY Click here |
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SKID CONTROL ECU (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 1 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (AIRBAG SENSOR ASSEMBLY BRANCH WIRE)
*a | Rear view of wire harness connector (to Airbag Sensor Assembly) |
Disconnect the airbag sensor assembly connector.
Type A:
Type B:
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE AIRBAG SENSOR ASSEMBLY Click here |
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO AIRBAG SENSOR ASSEMBLY (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 1 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR BRANCH WIRE)
*a | Front view of wire harness connector (to Spiral with Sensor Cable Sub-assembly [Steering Angle Sensor]) |
Disconnect the spiral with sensor cable sub-assembly (steering angle sensor) connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY (STEERING ANGLE SENSOR) Click here |
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 1 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION METER ASSEMBLY MAIN WIRE)
*a | Rear view of wire harness connector (to Combination Meter Assembly) |
Disconnect the combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE COMBINATION METER ASSEMBLY Click here |
NG |
REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER ASSEMBLY (CANH, CANL) |
CONNECT CONNECTOR
Reconnect the No. 1 CAN junction connector.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR SHORT IN CAN BUS WIRES (HEADLIGHT LEVELING ECU ASSEMBLY BRANCH WIRE)
*a | Front view of wire harness connector (to Headlight Leveling ECU Assembly) |
Disconnect the headlight leveling ECU assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here |
NG |
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO HEADLIGHT LEVELING ECU ASSEMBLY (CANH, CANL) |