Trouble Diagnoses — Basic Inspection (Cont'd)
EF & EC-427flowchartPage header marked SR20DE.
Basic Inspection (Cont'd)
1
B (from previous page)
2
CHECK SWITCH INPUT SIGNAL. Select the following switches in "DATA MONITOR" mode. a) Start signal, b) Idle position, c) Air conditioner signal, d) Neutral (Parking) signal, and check the switches' ON-OFF operation. - OR - Remove E.C.U. from behind audio system panel and check the above switches' ON-OFF operation using voltmeter at each E.C.U. terminal.
N.G.
Repair or replace the malfunctioning switch or its circuit.
O.K.
3
READ SELF-DIAGNOSTIC RESULTS. 1. Perform "SELF-DIAG RESULTS" mode. 2. Read out self-diagnostic results. 3. Is a failure detected? - OR - 1. Set "Self-diagnostic results mode" in Mode II. (Refer to page EF & EC-412.) 2. Count the number of RED L.E.D. or check engine light flashes and read out the codes. 3. Does the code shown correspond to any malfunction?
No
INSPECTION END
Yes
4
Go to the relevant inspection procedure.
Switch Input Signal — Voltmeter Check at E.C.U. Terminal
Start signal
ConditionIGN ON → IGN START
Voltage (V)0 → Battery voltage
Idle position
ConditionAccelerator pedal released
Voltage (V)0.45 - 0.55
Idle position
ConditionAccelerator pedal fully depressed
Voltage (V)Approx. 4.0
A/C signal
ConditionA/C OFF → A/C ON (Engine running)
Voltage (V)Battery voltage → Approx. 0
Neutral (Parking) switch
ConditionShift lever is Neutral position → Except Neutral position
Voltage (V)0 → Approx. 6.0