TROUBLESHOOTING GUIDE
F-62flowchartTroubleshooting steps 9-14 (POOR ACCELERATION)
9
INSPECTIONCheck for correct engine compression (page B-10). Engine compression: 1,324—932 kPa (13.5—9.5 kg/cm², 192—135 psi) - 300 rpm.
RESULTYes
ACTIONGo to next step
9
INSPECTION
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 for correct intake manifold vacuum at idle. Intake manifold vacuum: More than 450 mmHg (17.7 inHg).
RESULTYes
ACTIONGo to next step
10
INSPECTION
RESULTNo
ACTIONCheck for air leakage of intake air system components (page F-93)
11
INSPECTIONCheck if air cleaner element is clean (page F-75)
RESULTYes
ACTIONGo to next step
11
INSPECTION
RESULTNo
ACTIONReplace air cleaner element (page F-92)
12
INSPECTIONCheck for injector operating sound at idle
RESULTYes
ACTIONGo to Step 14
12
INSPECTION
RESULTNo
ACTIONGo to Step 13
13
INSPECTIONCheck if approx. 12V exists at injector connector (W/R) wire with ignition switch ON
RESULTYes
ACTIONCheck if injector resistance is OK (page F-112). Resistance: Approx. 14 Ω. If OK, check wiring between ECU and injector (page F-7). If not OK, check injector for fuel leakage (page F-113).
13
INSPECTION
RESULTNo
ACTIONCheck wiring between ECU and injector (page F-7)
14
INSPECTIONCheck if ECU terminal voltages are OK (2D, 2O and 2Q) (page F-129)
RESULTYes
ACTIONGo to next step
14
INSPECTION
RESULTNo
ACTIONCheck for cause (Refer to "Check Point for Each Terminal") (page F-132)