INSPECTION CHART FOR DIAGNOSIS CODE

Code No.	Diagnosis item	Reference page
12	Air flow sensor system
13	Intake air temperature sensor system
14	Throttle position sensor system
21	Engine coolant temperature sensor system
22	Crank angle sensor system
23	Camshaft position sensor
24	Vehicle speed signal system
25	Barometric pressure sensor system
31	Detonation sensor system
41	Injector system
44	Ignition coil (power transistor) system
64	Alternator FR terminal system

NOTE:

Do not replace the engine-A/T-ECU until a through terminal check reveals there are no short/open circuit.

Check that the engine-A/T-ECU earth circuit is normal before checking for the cause of the problem.