Diagnostic Procedure 18 — Engine knocks (Detonation) (Cont'd)
EF & EC-114flowchartDiagnostic Procedure 18 — Engine knocks (Detonation) (Cont'd)
1
C (from previous page)
2
Check throttle sensor. [CONSULT] Conduct self-diagnosis and 'Real Time Diagnosis' with 'DATA MONITOR' showing on display. (Refer to 'CONSULT'.) [No CONSULT] Conduct self-diagnosis Mode II. (Refer to 'Self-Diagnosis'.)
N.G.
Check throttle sensor and circuit. Refer to 'Throttle Sensor'. (See page EF&EC-143)
O.K.
3
Check air flow meter. Check for operation. (Refer to 'Air Flow Meter'. (See page EF&EC-134)
N.G.
Repair or replace.
O.K.
4
Check air intake for leaks. Start engine. Check to ensure engine speed increases when blow-by hose is pinched with fingers.
N.G.
Repair areas where air leaks.
O.K.
5
Check ignition system. Check for operation. Refer to 'Ignition Signal'. (See page EF&EC-140)
N.G.
same as step 3
O.K.
6
Check spark gaps. Turn ignition switch 'OFF'. Remove spark plugs. Install new or good spark plugs. While moving rear end of each spark plug close to grounding point, crank engine. Check for sparks.
N.G.
Check ignition coil, power transistor and related circuits. Refer to 'Ignition Signal'. (See page EF&EC-140)
O.K.
7
Check spark plugs. Remove spark plugs from engine and check for contaminants, damage and proper spark gaps.
N.G.
same as step 3
O.K.
8
D (continues to next page)