Using the Diagnostic TEST Mode Procedure

With the ignition switch off, connect terminals TE2 and E1 using SST #09842-18020 (TEST mode will not start if TE2 is grounded after the ignition switch is already on).

• Turn the ignition switch on; then start the engine and drive the vehicle at least 6 mph or higher (code 42, vehicle speed sensor will set if vehicle speed does not exceed 6 mph).

• Simulate driving conditions that problem occurs under.

• When the check engine lamp comes on, jumper TE1 to El without disconnecting TE2.

• Note and record diagnostic codes (codes display in same manner as in normal diagnostic mode).

• Exit diagnostic TEST mode by disconnecting TE2 and turning the ignition switch off.

Diagnostic TEST mode is also available on the > '92 Celica 5S-FE and 3S-GTE applications through the check connector TE2 terminal. For more information on using the VF terminal and the TE2 TEST mode diagnostics, refer to Course #872, TCCS Diagnosis.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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