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:

Concept, General information
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Inspection
1. Inspect pack clearance of reverse clutch (A) install the intermediate shaft and needle roller bearing onto the transaxle rear cover. (B) using a dial indicator, measure the reverse clutch pack clearance while applying and releasing compressed air (392 kpa, 4.0 Kgf/cm2, 57 psi). Pack c ...

Problem symptoms table
HINT: Inspect the "Fuse" and "Relay" before confirming the suspected area as shown in the table below. DISPLAY FUNCTION: SOUND FUNCTION: REMOTE CONTROL FUNCTION: *1: without Navigation System *2: with Navigation System ...

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