Trouble Diagnoses — Diagnostic Procedure 12 (Cont'd)
EF & EC-107flowchartDiagnostic Procedure 12 (Cont'd)
1
INSPECTION START
2
CHECK COMPONENT (A.A.C. valve). Refer to "Electrical Components Inspection". (See page EF & EC-125.)
3
CHECK POWER SOURCE. 1) Disconnect A.A.C. valve harness connector. 2) Turn ignition switch "ON". 3) Check voltage between terminal (a) and ground. Voltage: Battery voltage If N.G., repair harness or connectors.
N.G.
Check the following items: 1) "10A" fuse 2) Ignition switch 3) Middle harness connector
O.K.
4
CHECK INPUT SIGNAL. 1) Reconnect A.A.C. valve harness connector. 2) Start engine and warm it up sufficiently. 3) Check voltage between E.C.U. terminal (106) and ground. Voltage: Approximately 6 - 12V
N.G.
CHECK CONTINUITY BETWEEN E.C.U. AND A.A.C. VALVE. 1) Stop engine. 2) Disconnect E.C.U. harness connector. 3) Disconnect A.A.C. valve harness connector. 4) Check resistance between terminals (106) and (b). Resistance: Approximately 0Ω
CHECK CONTINUITY BETWEEN E.C.U. AND A.A.C. VALVE. 1) Stop engine. 2) Disconnect E.C.U. harness connector. 3) Disconnect A.A.C. valve harness connector. 4) Check resistance between terminals (106) and (b). Resistance: Approximately 0Ω
O.K.
INSPECTION END
| Specification | Value |
|---|---|
| Voltage at terminal (a) vs ground (power source check)Ignition switch ON, A.A.C. valve harness connector disconnected | Battery voltageV |
| Voltage at E.C.U. terminal (106) vs ground (input signal check)Engine running, warmed up sufficiently | Approximately 6 - 12V |
| Resistance between E.C.U. terminal (106) and A.A.C. valve terminal (b)Engine stopped, E.C.U. harness connector disconnected, A.A.C. valve harness connector disconnected | Approximately 0Ω |
Voltage at terminal (a) vs ground (power source check)Ignition switch ON, A.A.C. valve harness connector disconnected
Battery voltageV
Voltage at E.C.U. terminal (106) vs ground (input signal check)Engine running, warmed up sufficiently
Approximately 6 - 12V
Resistance between E.C.U. terminal (106) and A.A.C. valve terminal (b)Engine stopped, E.C.U. harness connector disconnected, A.A.C. valve harness connector disconnected
Approximately 0Ω