Toyota RAV4 manuals

Toyota Sienna Service Manual: CAN Bus Line

DESCRIPTION

When any DTC for the CAN communication system is output, first measure the resistance between the terminals of the DLC3 to specify the trouble area, and check that there is no short in the CAN main wire, between the main wire, and +B or GND.

WIRING DIAGRAM

WIRING DIAGRAM

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 CAN BUS WIRE (MAIN WIRE FOR DISCONNECTION, CAN BUS LINES FOR SHORT CIRCUIT)

CHECK CAN BUS WIRE

  1. Turn the ignition switch off.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

2 CHECK FOR SHORT TO B+ IN CAN BUS WIRE

CHECK FOR SHORT TO B+ IN CAN BUS WIRE

  1. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

3 CHECK FOR SHORT TO GND IN CAN BUS WIRE

CHECK FOR SHORT TO GND IN CAN BUS WIRE

  1. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

GO TO HOW TO PROCEED WITH TROUBLESHOOTING

ECM Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area ECM Communication Stop Mode "Engine" is not displayed on the "Communication Bus Che ...

Open in CAN Main Bus Line
DESCRIPTION There may be an open circuit in the CAN main bus wire and/or the DLC3 branch wire when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is 69 Ω or higher. ...

Other materials:

Identification information
VEHICLE IDENTIFICATION AND SERIAL NUMBERS 1. VEHICLE IDENTIFICATION NUMBER (a) The vehicle identification number is stamped on the vehicle identification number plate and the certification label, as shown in the illustration. A:     Vehicle Identification Number Plate B:   ...

Fold Seat Switch Circuit
DESCRIPTION When the fold seat switch is operated, a switch operation signal is sent to the fold seat control ECU. The ECU receives switch operation signals from each switch and activates the folding motor, reclining motor, and release actuator. WIRING DIAGRAM INSPECTION PROCEDURE 1 IN ...

Distance Control ECU Power Source Circuit
DESCRIPTION This circuit provides power to operate the distance control ECU. The distance control ECU determines information about the vehicle in front based on data from the laser sensor, and then decides how much acceleration and/or deceleration is needed to maintain the set distance. The ...

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