Diagnostic Procedure 20 — Backfire (Cont'd)
EF & EC-124flowchartTROUBLE DIAGNOSES
Diagnostic Procedure 20 — Backfire (Cont'd)
1
B (continued from previous page)
2
Check compression pressure and ignition timing.
3
Check E.C.U. harness connector. • Check E.C.U. pin terminals and harness connector for poor contact or damage.
N.G.
Repair or replace.
O.K.
4
Check E.C.U. power supply and ground circuit. Refer to "Main Power Supply and Ground Circuit". (See page EF&EC-128)
N.G.
same as step 3
O.K.
5
Replace E.C.U.
6
Check injectors for blockages.
7
Check intake valves for deposits. • Remove deposits.
END