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:

Inspection
1. INSPECT VENTILATION VALVE (a) Install a clean hose to the ventilation valve. (b) Check the ventilation valve operation. (1) Blow air into the cylinder head side, and check that air passes through easily. NOTICE: Do not suck air through the valve. Petroleum substances i ...

Door control switch
INSPECTION 1. INSPECT DOOR CONTROL SWITCH ASSEMBLY  Measure the resistance according to the value(s) in the table below. Standard resistance HINT: If the result is not as specified, replace the switch. ...

Installing the spare tire
Remove any dirt or foreign matter from the wheel contact surface. If foreign matter is on the wheel contact surface, the wheel nuts may loosen while the vehicle is in motion, causing the tire to come off. Install the tire and loosely tighten each wheel nut by hand by ...

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