List Of Operation Methods

(a) By operating each of the A/C control switches as shown in the diagram below, it is possible to enter the diagnostic check mode.

urn the ignition switch on (IG) with FRONT DEF and FAN+ switches being pressed.

Indicator Check (continuous operation)

DTC Check (Sensor Check) (continuous operation)

DTC Check (Sensor Check) (step operation)

'If both FRONT DEF switch and FAN+ switch are not pressed at the same time.

DTC Check (Sensor Check) (stepped operation)

Actuator Check (continuous operation)

Actuator Check (step operation)

Cancel the check mode and start A/C control.

: Indicates a switch operation R/F: Recirculation / Fresh select switch UPDr: Driver side temperature up switch

2. CHECK DLC3

(a) The vehicle's ECM uses CAN and the ISO 9141-2 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and meets the ISO 9141-2 format.

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 Q

SG (5) - Body ground

Signal ground

Always

Below 1 Q

BAT (16) - Body ground

Battery positive

Always

11 to 14 V

CANH (6) - CANL (14)

HIGH-level CAN bus line

IG switch OFF

54 to 67 Q

CANH (6) - Battery positive

HIGH-level CAN bus line

IG switch OFF

1MQ or Higher

CANH (6) - CG (4)

HIGH-level CAN bus line

IG switch OFF

3kQ or Higher

CANL (14) - Battery positive

LOW-level CAN bus line

IG switch OFF

1MQ or Higher

CANL (14) - CG (4)

LOW-level CAN bus line

IG switch OFF

If the display shows a communication error message when you have connected the cable of the intelligent tester to the DLC3, turned the ignition switch ON and operated the tester, there is a problem on the vehicle side or tool side.

• If the communication is normal when the tool is connected to another vehicle, inspect the DLC3 on the original vehicle.

• If the communication is still impossible when the tool is connected to another vehicle, the problem is probably in the tool itself, so consult the Service Department listed in the tool's instruction manual.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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