TROUBLESHOOTING GUIDE
F-33spec tableTroubleshooting steps 6-8
6
INSPECTIONConnect System Selector to diagnosis connector and set Test Switch to "SELF TEST" when engine is cold; Check if engine speed decreases as engine warms up — page F-98
RESULTYes
ACTIONGo to next step
6
INSPECTIONConnect System Selector to diagnosis connector and set Test Switch to "SELF TEST" when engine is cold; Check if engine speed decreases as engine warms up — page F-98
RESULTNo
ACTIONCheck air valve — page F-99
7
INSPECTIONWith condition of Step 5 check for correct ignition timing at idle after warm-up — page F-75; Ignition timing: 10° ± 1° BTDC
RESULTYes
ACTIONGo to next step
7
INSPECTIONWith condition of Step 5 check for correct ignition timing at idle after warm-up — page F-75; Ignition timing: 10° ± 1° BTDC
RESULTNo
ACTIONAdjust — page F-75
8
INSPECTIONTry known good ECU and check if condition improves — page F-127
RESULTYes
ACTIONReplace ECU — page F-127
8
INSPECTIONTry known good ECU and check if condition improves — page F-127
RESULTNo
ACTIONChange fuel to another brand