When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out in all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following flowchart, the location of the problem can be found quickly and efficiently. Therefore, using this check is essential when engine troubleshooting.
1 CHECK BATTERY VOLTAGE
NOTICE: Carry out this check with the engine stopped and ignition switch off.
Result
2 CHECK WHETHER ENGINE CRANKS
3 CHECK WHETHER ENGINE STARTS
4 CHECK AIR FILTER
5 CHECK IDLING SPEED
6 CHECK FUEL PRESSURE
7 CHECK FOR SPARKS
PROCEED TO PROBLEM SYMPTOMS TABLE
Diagnosis system
DESCRIPTION
(a) When troubleshooting OBD II (On-Board
Diagnostics) vehicles, an intelligent tester
(complying with SAE J1987) must be connected to
the DLC3 (Data Link Connector 3) of the vehicle.
Various data in the vehicle's ECM (Engine Control
Module) can be then read.
(b) OBD II regu ...
Dtc clear
(A) when using the obd ii scan tool or intelligent
tester: clearing the dtcs.
(1) Connect the intelligent tester together with the
CAN VIM (controller area network vehicle
interface module) to the DLC3.
(2) Turn the ignition switch to the ON position and
turn the OBD II scan tool or the inte ...
Casual speech recognization
Due to natural language speech recognition technology, this system
enables recognition of a command when spoken naturally. However,
the system cannot recognize every variation of each command.
In some situations, it is possible to omit the command for the procedure
and directly state the desir ...