TROUBLESHOOTING GUIDE
F-35spec tableTroubleshooting steps 5-11
5
INSPECTIONCheck if ECU terminal voltages are OK (2D, 2O and 2Q) — page F-128
RESULTYes
ACTIONGo to next step
5
INSPECTIONCheck if ECU terminal voltages are OK (2D, 2O and 2Q) — page F-128
RESULTNo
ACTIONCheck for cause (Refer to "Check Point for Each Terminal") — page F-132
6
INSPECTIONCheck for correct ignition timing at idle — page F-75; Ignition timing: 10° ± 1° BTDC
RESULTYes
ACTIONCheck for correct idle speed — page F-76; Idle speed: 850 ± 50 rpm; If OK, go to next step; If not OK, adjust idle speed — page F-76
6
INSPECTIONCheck for correct ignition timing at idle — page F-75; Ignition timing: 10° ± 1° BTDC
RESULTNo
ACTIONAdjust — page F-75
7
INSPECTIONCheck for correct fuel line pressure at idle — page F-103; Fuel line pressure: 265—314 kPa (2.7—3.2 kg/cm², 38—46 psi) (Vacuum hose to pressure regulator disconnected)
RESULTYes
ACTIONGo to next step
7
INSPECTIONCheck for correct fuel line pressure at idle — page F-103; Fuel line pressure: 265—314 kPa (2.7—3.2 kg/cm², 38—46 psi) (Vacuum hose to pressure regulator disconnected)
RESULTNo
ACTIONLow pressure: Check fuel line pressure while pinching fuel return hose; If fuel line pressure quickly increases, check pressure regulator — page F-111; If fuel line pressure gradually increases, check for clogging between fuel pump and pressure regulator; If not clogged, check fuel pump maximum pressure — page F-108
8
INSPECTIONCheck if strong blue spark is visible at each disconnected high-tension lead while cranking engine
RESULTYes
ACTIONGo to next step
8
INSPECTIONCheck if strong blue spark is visible at each disconnected high-tension lead while cranking engine
RESULTNo
ACTIONCheck ignition system (Refer to Troubleshooting "Misfire") — page G-18
9
INSPECTIONCheck for correct engine compression — page B-10; Engine compression: 1,324—932 kPa (13.5—9.5 kg/cm², 192—135) - 300 rpm
RESULTYes
ACTIONGo to next step
9
INSPECTIONCheck for correct engine compression — page B-10; Engine compression: 1,324—932 kPa (13.5—9.5 kg/cm², 192—135) - 300 rpm
RESULTNo
ACTIONCheck engine condition — page B-10: Worn piston, piston rings or cylinder wall; Defective cylinder head gasket; Distorted cylinder head; Improper valve seating; Valve sticking in guide
10
INSPECTIONCheck if spark plugs are OK
RESULTYes
ACTIONGo to next step
10
INSPECTIONCheck if spark plugs are OK
RESULTNo
ACTIONRepair, clear, or replace — page G-20
11
INSPECTIONTry known good ECU and check if condition improves — page F-127
RESULT
ACTION
See also
F-128CONTROL SYSTEM - Engine Control Unit Terminal Voltage TableF-132CONTROL SYSTEM - Check Point for Each Terminal (continued)F-75ENGINE TUNE-UPF-76ENGINE TUNE-UPF-103FUEL SYSTEMF-111PRESSURE REGULATORF-108FUEL SYSTEMG-18IGNITION SYSTEM — TROUBLESHOOTINGB-10COMPRESSIONG-20IGNITION SYSTEM — SPARK PLUGF-127CONTROL SYSTEM - Engine Control Unit Inspection