Diagnosis System

WARNING: This page is about a different car, the 2008 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DLC3

The ECU uses ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.

Fig 1: Identifying DLC3 Connector Terminals (CANL And BAT)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TERMINAL DESCRIPTION

Symbols (Terminal No.)

Terminal Description

Condition

Specified Condition

SIL (7) - SG (5)

Bus" +" line

During transmission

Pulse generation

CG (4) - Body ground

Chassis ground

Always

Below 1 Ω

SG (5) - Body ground

Signal ground

Always

Below 1 Ω

BAT (16)-Body ground

Battery positive

Always

11 to 14 V

CANH (6)-CANL (14)

CAN bus line

Ignition switch OFF⁽¹⁾

54 to 69 Ω

CANH (6) - CG (4)

HIGH-level CAN bus line

Ignition switch OFF⁽¹⁾

200 Ω or higher

CANL (14) - CG (4)

LOW-level CAN bus line

Ignition switch OFF⁽¹⁾

200 Ω or higher

CANH (6) - BAT (16)

HIGH-level CAN bus line

Ignition switch OFF⁽¹⁾

6 kΩ or higher

CANL (14) - BAT (16)

LOW-level CAN bus line

Ignition switch OFF⁽¹⁾

6 kΩ or higher

NOTE:

⁽¹⁾	Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors.

If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector.

HINT:

Connect the cable of the Techstream to the DLC3, turn the ignition switch ON and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester.

If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle.
If communication is still not possible when the tester is connected to another vehicle, the problem is probably in the tester itself. Consult the Service Department listed in the tester's instruction manual.

CHECK INDICATOR
1. Turn the ignition switch to the ON position.
  
  Fig 2: Identifying CRUISE Main Indicator Light
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check that the CRUISE MAIN indicator light comes on when the cruise control main switch ON-OFF button is pushed on, and that the indicator light goes off when the ON-OFF button is pushed off.
  HINT:
  
  If there is a problem with the ON/OFF illumination of the indicator light, inspect the cruise main indicator light circuit (See CRUISE MAIN INDICATOR LIGHT CIRCUIT ).
  
  HINT:
  
  If a malfunction occurs in the vehicle speed sensor, stop light switch assembly or other related parts during cruise control driving, the ECM actuates AUTO CANCEL of the cruise control. Then the CRUISE MAIN indicator light starts to blink, to inform the driver of the malfunction. At the same time, data of the malfunction is stored as a diagnostic trouble code (DTC).
  
  Fig 3: Identifying Indicator Light Illumination Pattern
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002