13A-SYMPTOM CHART

SYMPTOM CHART

warning

When touching the throttle valve, surely shut off the driving circuits of the throttle valve. In the event that the throttle valve is operated, a finger might be injured as the result of being caught by the throttle valve.

caution

During diagnosis, a DTC associated with other systems may be set when the power supply mode of the electric motor switch is turned on with connector(s) disconnected. On completion, confirm all systems for DTC(s). If DTC(s) are set, erase them all.

caution

Disconnecting the 12V starter battery cables or removing the combination meter will erase the learned value of the fuel gauge. To recover the learned value, input a vehicle speed (by actually driving the vehicle or inputting a simulated vehicle speed), and stop the vehicle. This will complete the learning process.

note	Check that the ECM ground circuit is normal before checking for the cause of the problem.

TROUBLE SYMPTOMS		INSPECTION PROCEDURE	REFERENCE PAGE
Communication with scan tool is impossible	Communication with ECM only is not possible	1
Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) and related parts	The Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) does not illuminate right after the power supply mode of the electric motor switch is turned on	2
	The Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) remains illuminated and never goes out	3
Starting	Starts up and dies	4
Starting	Hard starting	5
Knocking		6
Dieseling (run-on)		7
Too high CO and HC concentration		8
IM240 test failure	Transient, mass emission tailpipe test failure	9
	Purge flow test of the evaporative emission canister failure	10
	Pressure test of the evaporative system failure	11
Power supply system and OSS-ECU (IG1) system		12
Fuel pump system		13
Ignition circuit system		14
Engine oil pressure switch system		15