Trouble Diagnoses - Diagnostic Procedure 9 (Cont'd)
EF & EC-99flowchartDiagnostic Procedure 9 (Cont'd)
1
INSPECTION START
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Perform self-diagnosis (Mode III). Is code No. 43 indicated?
N.G.
INSPECTION END
O.K.
3
CHECK POWER SOURCE. [A] 1) Disconnect throttle sensor harness connector. 2) Turn ignition switch "ON". 3) Check voltage between terminal (f) and ground. Voltage: Approximately 5.0V
N.G.
Check the following items. [B] 1) Harness continuity between throttle sensor harness connector and E.C.U. a. Turn ignition switch "OFF". b. Disconnect E.C.U. harness connector. c. Check resistance between (f) and (48). Resistance: Approximately 0Ω 2) Middle harness connector 3) E.C.C.S. relay (Refer to page EF & EC-128.)
Check the following items. [B] 1) Harness continuity between throttle sensor harness connector and E.C.U. a. Turn ignition switch "OFF". b. Disconnect E.C.U. harness connector. c. Check resistance between (f) and (48). Resistance: Approximately 0Ω 2) Middle harness connector 3) E.C.C.S. relay (Refer to page EF & EC-128.)
O.K.
4
CHECK GROUND CIRCUIT. [C] 1) Turn ignition switch "OFF" and disconnect E.C.U. harness connector. 2) Disconnect throttle sensor harness connector. 3) Check resistance between terminal (d) and E.C.U. terminal (30). Resistance: Approximately 0Ω
N.G.
1) Check harness continuity between throttle sensor and ground. 2) E.C.U. ground circuit.
O.K.
5
CHECK THROTTLE SENSOR CIRCUIT. [D] Check resistance between terminal (e) and E.C.U. terminal (38). Resistance: Approximately 0Ω
N.G.
Repair or replace harness.
O.K.
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CHECK INPUT SIGNAL. [E] 1) Reconnect E.C.U. harness connector and throttle sensor harness connector. 2) Turn ignition switch "ON". 3) Make sure that voltage between terminal (38) and ground changes when accelerator pedal is depressed. Voltage: Approximately 0.5 - 4.0V
N.G.
(continue down — N.G. path continues to next page)
O.K.
INSPECTION END