Diagnostic Procedure 28 (Cont'd)
EF & EC-583flowchartSR20DET specific (page header). Uses CONSULT WORK SUPPORT mode.
Diagnostic Procedure 28 - Throttle Sensor
1
INSPECTION START
2
CHECK POWER SUPPLY. 1) Disconnect throttle sensor sub-harness connector. 2) Turn ignition switch "ON". 3) Check voltage between terminal (a) and ground. Voltage: Approximately 5V
N.G.
Repair harness or connectors.
O.K.
3
CHECK GROUND CIRCUIT. 1) Turn ignition switch "OFF". 2) Check harness continuity between terminal (a) and engine ground. Continuity should exist.
N.G.
same as step 2
O.K.
4
CHECK INPUT SIGNAL CIRCUIT. 1) Reconnect throttle sensor sub-harness connector. 2) Turn ignition switch "ON". 3) Read throttle sensor output voltage in "WORK SUPPORT" mode with CONSULT. Throttle valve fully closed: 0.45 - 0.55V. Throttle valve fully open: Approx. 4.0V. — OR — 1) Disconnect E.C.U. harness connector. 2) Check harness continuity between E.C.U. terminal 20 and terminal (b). Continuity should exist.
N.G.
Check the following. - Joint connector (F24) - Harness continuity between E.C.U. and throttle sensor. If N.G., repair harness or connectors.
O.K.
5
CHECK COMPONENT (Throttle sensor). Refer to "Electrical Components Inspection". (See page EF & EC-632.)
N.G.
Replace throttle sensor.
O.K.
6
Check E.C.U. pin terminals for damage or the connection of E.C.U. harness connector.