Diagnostic Procedure 31 (Cont'd) — INJECTOR
EF & EC-154flowchartHarness connectors M59, E55 for L.H.D. models; M5, E1 for R.H.D. models.
TROUBLE DIAGNOSES
Diagnostic Procedure 31 (Cont'd)
Injector diagnostic procedure
1
INSPECTION START
2
A — CHECK OVERALL FUNCTION. 1) Start engine. 2) Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT. 3) Make sure that each circuit produces a momentary engine speed drop. OR 2) Listen to each injector operating sound. Clicking noise could be heard.
O.K.
INSPECTION END
N.G.
3
B — CHECK POWER SUPPLY. 1) Stop engine. 2) Disconnect injector harness connector. 3) Check voltage between each injector terminal (b) and ground. Voltage: Battery voltage
N.G.
Check the following. - Harness connectors F21, M17. - Harness connectors M59, E55 (L.H.D. models). - Harness connectors M5, E1 (R.H.D. models). - 10A fuse (fuselink box). - Harness continuity between battery and injector. If N.G., repair harness or connectors.
Check the following. - Harness connectors F21, M17. - Harness connectors M59, E55 (L.H.D. models). - Harness connectors M5, E1 (R.H.D. models). - 10A fuse (fuselink box). - Harness continuity between battery and injector. If N.G., repair harness or connectors.
O.K.
4
C — CHECK OUTPUT SIGNAL CIRCUIT. 1) Disconnect E.C.U. harness connector. 2) Check harness continuity between injector terminals (a) and E.C.U. terminals 101, 110, 103, 112. Continuity should exist.
N.G.
Repair harness or connector.
O.K.
5
CHECK COMPONENT (Injector). Refer to "Electrical Components Inspection". (See page EF&EC-171 - 180).
N.G.
Replace injector.
O.K.
6
Check E.C.U. pin terminals for damage or poor connection of E.C.U. harness connector.
See also
EF & EC-171 · EF & EC-180