Diagnostic Code Ecu Toyota 4af

Total OBD & ECU Auto Diagnostics

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(Seconds)

Diagnostic Codes (See page FI-25 or 26) (TCCS ECU w/o Air Flow Meter)

(a) Normal System Operation (code No.1) (normal function)

• The light will blink every 4.5 seconds

(b) Malfunction Code Indication

• The light blink a number of times equal to the malfunction code indication with a 2.5 second interval between each indication.

• After all the codes have been output, there will be a 4.5 second pause and they will all be repeated as long as terminals T and E1 of the check connector are shorted.

NOTE: In the event of a number of trouble codes, indication will begin from the smaller value and continue in order to the larger.

(TCCS ECU w/ Air Flow Meter)

(a) Normal System Operation (no malfunction)

• The light will alternately blink on and OFF for 0.25 second intervals.

(b) Malfunction Code Indication

• In the event of a malfunction, the light will blink every 0.5 seconds. The first number of blinks will equal the first digit of a 2-digit diagnostic code and, after a 1.5 second pause, the 2nd number of blinks will equal the 2nd. If there are two or more codes, there will be a 2.5 second pause between each.

• After all the codes have been output, there will be a 4.5 second pause and they will all be repeated as long as the terminals T and E1 of the check connector are shorted.

NOTE: In the event of a number of trouble codes, indication will begin from the smaller value and continue in order to the larger.

5. After the diagnosis check, remove the service wire.

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