TROUBLE DIAGNOSES — Self-diagnosis — Description (Cont'd) CHECKER BOX

EF & EC-66flowchart

Applicable only to models equipped with the 'check connector' harness.

Self-diagnosis — Description (Cont'd)

CHECKER BOX

The Checker Box is used to control and read the self-diagnosis systems on models equipped with the "check connector" harness. It is a tool which can be used to operate the self-diagnosis system easily.

The Checker Box switch is used to trigger each of the self-diagnosis modes. You can read the red and green light emitting diode (L.E.D.) codes in the Checker Box, so it is not necessary to remove the E.C.U. The Checker Box also has an audible tone for each L.E.D. signal, so you can "hear" the codes instead of looking at the L.E.D. if necessary.

Self-diagnostic procedure

Probable Cause

Corrective Action

DIAGNOSIS START

A — Connect Checker Box harness to the check connector on the vehicle.

B — Start engine and warm it up to normal operating temperature.

C — Push and hold the mode switch in the "ON" position and wait for the inspection lamps to flash.

D — Count the number of flashes, and after the lamps have flashed the number for the required mode, immediately release the mode switch.

Perform the required self-diagnostic procedure.

Stop engine and disconnect Checker Box harness from the check connector on the vehicle.

DIAGNOSIS END

Cause

DIAGNOSIS START

Fix

A — Connect Checker Box harness to the check connector on the vehicle.

Cause

A — Connect Checker Box harness to the check connector on the vehicle.

Fix

B — Start engine and warm it up to normal operating temperature.

Cause

B — Start engine and warm it up to normal operating temperature.

Fix

C — Push and hold the mode switch in the "ON" position and wait for the inspection lamps to flash.

Cause

C — Push and hold the mode switch in the "ON" position and wait for the inspection lamps to flash.

Fix

D — Count the number of flashes, and after the lamps have flashed the number for the required mode, immediately release the mode switch.

Cause

D — Count the number of flashes, and after the lamps have flashed the number for the required mode, immediately release the mode switch.

Fix

Perform the required self-diagnostic procedure.

Cause

Perform the required self-diagnostic procedure.

Fix

Stop engine and disconnect Checker Box harness from the check connector on the vehicle.

Cause

Stop engine and disconnect Checker Box harness from the check connector on the vehicle.

Fix

DIAGNOSIS END

IMPORTANT

Connect the Checker Box to the check connector only when the ignition key is in the "OFF" position.

NOTE

You can erase the stored memory by changing from diagnostic mode to Mode IV using the mode switch on the Checker Box.

IMPORTANT

Disconnect the Checker Box from the check connector only when the ignition key is in the "OFF" position and the inspection lamps turn off.

Service procedures and instructions except for the above are the same as those where Checker Box is not used.

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TROUBLE DIAGNOSES — Self-diagnosis — Description (Cont'd) CHECKER BOX

Self-diagnosis — Description (Cont'd)

CHECKER BOX

Self-diagnostic procedure

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