DESCRIPTION
The CAN bus wires are considered to be shorted when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 54 Ω.
Symptom |
Trouble Area |
Resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 54 Ω. |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
HINT: Operating the ignition switch, any switches, or any doors triggers related ECU and sensor communication with the CAN. This communication will cause the resistance value to change.
1 CHECK FOR SHORT IN CAN BUS WIRES (ECM MAIN BUS WIRE)
Standard resistance
REPLACE ECM
2 CHECK FOR SHORT IN CAN BUS WIRES (NETWORK GATEWAY ECU MAIN BUS WIRE)
Standard resistance
REPLACE NETWORK GATEWAY ECU
3 CHECK FOR SHORT IN CAN BUS WIRES (DLC3 BRANCH WIRE)
Standard resistance
4 CHECK FOR SHORT IN CAN BUS WIRES (JUNCTION CONNECTOR - NETWORK GATEWAY ECU MAIN BUS WIRE)
Standard resistance
Result
5 CHECK FOR SHORT IN CAN BUS WIRES (JUNCTION CONNECTOR - ECM MAIN BUS WIRE)
Standard resistance
REPLACE WIRING HARNESS CONNECTOR (JUNCTION CONNECTOR)
6 CHECK FOR SHORT IN CAN BUS WIRES (JUNCTION CONNECTOR - CAN JUNCTION CONNECTOR MAIN BUS WIRE)
Standard resistance
7 CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU BRANCH WIRE)
Standard resistance
8 CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR BRANCH WIRE)
Standard resistance
Result
REPLACE WIRING HARNESS CONNECTOR (JUNCTION CONNECTOR)
9 CHECK FOR SHORT IN CAN BUS WIRES (DISTANCE CONTROL ECU BRANCH WIRE)
Standard resistance
REPLACE WIRING HARNESS CONNECTOR (JUNCTION CONNECTOR)
10 CHECK FOR SHORT IN CAN BUS WIRES (CAN JUNCTION CONNECTOR - JUNCTION CONNECTOR MAIN BUS WIRE)
Standard resistance
11 CHECK FOR SHORT IN CAN BUS WIRES (CAN JUNCTION CONNECTOR - ECM MAIN BUS WIRE)
Standard resistance
12 CHECK FOR SHORT IN CAN BUS WIRES (YAW RATE SENSOR BRANCH WIRE)
Standard resistance
REPLACE WIRING HARNESS CONNECTOR (CAN JUNCTION CONNECTOR)
13 CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU BRANCH WIRE)
Standard resistance
REPLACE ABS & TRACTION ACTUATOR ASSEMBLY
14 CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR BRANCH WIRE)
Standard resistance
REPLACE STEERING ANGLE SENSOR
15 CHECK FOR SHORT IN CAN BUS WIRES (DISTANCE CONTROL ECU BRANCH WIRE)
Standard resistance
REPLACE DISTANCE CONTROL ECU ASSEMBLY
16 CHECK FOR SHORT IN CAN BUS WIRES (YAW RATE SENSOR BRANCH WIRE)
Standard resistance
REPLACE YAW RATE SENSOR
Check for intermittent problems
1. CHECK FOR INTERMITTENT PROBLEMS
HINT:
For use of the intelligent tester only:
Inspect the vehicle's ECM using check mode.
Intermittent problems are easier to detect with an
intelligent tester when the ECM is in check mode. In
check mode, the ECM uses 1 trip detection logic, which
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Concept
The vehicle can be accessed without operating
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Carrying the vehicle key with you, e.g., in your
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The vehicle automatically detects the vehicle key
when it is in close proximity or in the car's interior.
Unlocking the vehicle
Grasp the handle of ...