Nissan 100NX N14 silhouetteN14

Diagnostic Procedure 16 (Cont'd) - F.I.C.D. Control Solenoid Valve

EF & EC-123flowchart

Idle speed differs by transmission: M/T 750 +/- 50 rpm, A/T 850 +/- 50 rpm (both 850 +/- 50 rpm with A/C and blower on). Applies to GA13DS, GA14DS & GA16DS engines with catalyzer and E.G.R.

E.C.C. TROUBLE DIAGNOSES (Models with catalyzer and E.G.R.)

Diagnostic Procedure 16 (Cont'd)

Diagnostic Procedure 16 - F.I.C.D. Control Solenoid Valve

1
INSPECTION START
2
CHECK OVERALL FUNCTION. 1) Start engine and warm it up sufficiently. 2) Check idle speed. M/T: 750 +/- 50 rpm. A/T: 850 +/- 50 rpm. If N.G., adjust idle speed. 3) Turn both air conditioner switch and blower fan switch ON, then recheck idle speed. M/T: 850 +/- 50 rpm. A/T: 850 +/- 50 rpm.
O.K.
INSPECTION END
N.G.
3
Check if air conditioner compressor functions normally.
N.G.
Refer to HA section.
O.K. (A)
4
CHECK VACUUM SOURCE TO F.I. POT. 1) Disconnect vacuum hose to F.I. pot. 2) Make sure that vacuum exists under the following condition. At conditioner switch OFF: Vacuum should not exist. Air conditioner switch ON: Vacuum should exist.
O.K.
CHECK COMPONENTS (F.I. pot). Refer to Electrical Components Inspection. (See page EF & EC-149.)
N.G.
5
CHECK CONTROL FUNCTION. 1) Check voltage between E.C.U. terminal 116 and ground under the following condition. Voltage: At conditioner switch OFF. Battery voltage. Air conditioner switch ON. Approximately 0V
O.K. (C)
Check vacuum hose for clogging cracks and proper connection.
N.G. (D)
6
CHECK POWER SUPPLY. 1) Stop engine. 2) Disconnect F.I.C.D. control solenoid valve harness connector. 3) Turn ignition switch ON. 4) Check voltage between terminal a and ground. Voltage: Battery voltage
N.G.
Check the following. - Harness connectors F33, M37 - 10A fuse - Harness continuity between F.I.C.D. control solenoid valve and fuse. If N.G., repair harness or connectors.
Check the following. - Harness connectors F33, M37 - 10A fuse - Harness continuity between F.I.C.D. control solenoid valve and fuse. If N.G., repair harness or connectors.
O.K.
7
A (continues to next page)

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