TROUBLE DIAGNOSES - Consult (Cont'd)

EF & EC-46prose procedure

Consult (Cont'd)

SELF-DIAGNOSTIC RESULTS MODE

DIAGNOSTIC ITEM	DIAGNOSTIC ITEM IS DETECTED WHEN ...	CHECK ITEM (REMEDY)
CRANK ANGLE SENSOR*	• Either 1° or 180° signal is not entered for the first few seconds during engine cranking. • Either 1° or 180° signal is not input often enough while the engine speed is higher than the specified rpm.	• Harness and connector (If harness and connector are normal, replace crank angle sensor.)
AIR FLOW METER	• The air flow meter circuit is open or shorted. (An abnormally high or low voltage is entered.)	• Harness and connector (If harness and connector are normal, replace air flow meter.)
ENGINE TEMP SENSOR	• The engine temperature sensor circuit is open or shorted. (An abnormally high or low output voltage is entered.)	• Harness and connector • Engine temperature sensor
IGN SIGNAL-PRIMARY*	• The ignition signal in primary circuit is not entered during engine cranking or running.	• Harness and connector • Power transistor unit
THROTTLE SENSOR	• The throttle sensor circuit is open or shorted. (An abnormally high or low voltage is entered.)	• Harness and connector • Throttle sensor
EXH GAS SENSOR	• The exhaust gas sensor circuit is open or shorted. (An abnormally high or low voltage is entered.)	• Harness and connector • Exhaust gas sensor

CRANK ANGLE SENSOR*

DIAGNOSTIC ITEM IS DETECTED WHEN ...• Either 1° or 180° signal is not entered for the first few seconds during engine cranking. • Either 1° or 180° signal is not input often enough while the engine speed is higher than the specified rpm.

CHECK ITEM (REMEDY)• Harness and connector (If harness and connector are normal, replace crank angle sensor.)

AIR FLOW METER

DIAGNOSTIC ITEM IS DETECTED WHEN ...• The air flow meter circuit is open or shorted. (An abnormally high or low voltage is entered.)

CHECK ITEM (REMEDY)• Harness and connector (If harness and connector are normal, replace air flow meter.)

ENGINE TEMP SENSOR

DIAGNOSTIC ITEM IS DETECTED WHEN ...• The engine temperature sensor circuit is open or shorted. (An abnormally high or low output voltage is entered.)

CHECK ITEM (REMEDY)• Harness and connector • Engine temperature sensor

IGN SIGNAL-PRIMARY*

DIAGNOSTIC ITEM IS DETECTED WHEN ...• The ignition signal in primary circuit is not entered during engine cranking or running.

CHECK ITEM (REMEDY)• Harness and connector • Power transistor unit

THROTTLE SENSOR

DIAGNOSTIC ITEM IS DETECTED WHEN ...• The throttle sensor circuit is open or shorted. (An abnormally high or low voltage is entered.)

CHECK ITEM (REMEDY)• Harness and connector • Throttle sensor

EXH GAS SENSOR

DIAGNOSTIC ITEM IS DETECTED WHEN ...• The exhaust gas sensor circuit is open or shorted. (An abnormally high or low voltage is entered.)

CHECK ITEM (REMEDY)• Harness and connector • Exhaust gas sensor

NOTE

Check items causing a malfunction of crank angle sensor circuit first, if both "CRANK ANGLE SENSOR" and "IGN SIGNAL-PRIMARY" come out at the same time.

NOTE

If CONSULT indicates "CODE 28", it should be ignored.

Procedure

Connect the CONSULT unit to the diagnostic connector and switch the ignition switch to the "ON" position.

Select "SELF-DIAG RESULTS" from the "SELECT DIAG MODE" menu.

PASS

PASS: NO SELF DIAGNOSTIC FAILURE INDICATED

FAIL

FAIL: SELF-DIAG RESULTS with failures listed

After clearing system fault, press "PRINT" for a hard copy of failure details. Press erase to clear fault from ECU memory.

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TROUBLE DIAGNOSES - Consult (Cont'd)

Consult (Cont'd)

SELF-DIAGNOSTIC RESULTS MODE

Procedure

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