Toyota Camry Manual page 1416

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TOYOTA hand–held tester

AUTOMATIC TRANSAXLE (A140E)

DIAGNOSIS SYSTEM

When troubleshooting OBD II vehicles, the only dif-

ference from the usual troubleshooting procedure

is that you connect an OBD II scan tool complying

with SAE J1987 or TOYOTA hand–held tester to the

vehicle, and read off various data output from the

vehicle's ECM.

OBD II regulations require that the vehicle's on–

board computer lights up the Malfunction Indicator

Lamp (MIL) on the instrument panel when the com-

puter detects a malfunction in the computer itself or

in drive system components which affect vehicle

emissions. In addition to the MIL lighting up when

a malfunction is detected, the applicable DTCs pre-

scribed by SAE J2012 are recorded in the ECM

memory (See page DI–16).

If the malfunction only occurs in 3 trips, the MIL goes

off but the DTCs remain recorded in the ECM

To check the DTCs, connect an OBD II scan tool or

TOYOTA hand–held tester to DLC3 on the vehicle.

The OBD II scan tool or TOYOTA hand–held tester

also enables you to erase the DTCs and check

freeze frame data and various forms of engine data

(For instruction book).

DTCs include SAE controlled codes and Manufac-

turer controlled codes.

SAE controlled codes must be set as the codes pre-

scribed by the SAE, while Manufacturer controlled

codes can be set freely by the manufacturer within

the prescribed limits.

(See DTC chart on page DI–401)

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