TROUBLESHOOTING GUIDE — 18. ENGINE STALLS DURING START-UP
F-46flowchart18. ENGINE STALLS DURING START-UP
Description
DESCRIPTION
ItemsEngine unexpectedly stops running while starting
NOTE
[TROUBLESHOOTING HINTS]
1) Misfire occurs when depressing accelerator
- Air/Fuel mixture too rich or too lean
- Incorrect ignition timing
- Weak ignition
2) Lack of engine torque for start-up
- Air/Fuel mixture too rich or too lean
- Low intake air amount
- Low engine compression
Troubleshooting Guide (Steps 1-5)
1
Check if brakes are dragging (page P-29)
Yes
Repair (page P-29)
No
2
Go to next step
3
Check if '00' is displayed on Self-Diagnosis Checker with ignition switch ON (page F-78)
No
Malfunction Code No. displayed: Check for cause (Refer to specified check sequence) (page F-78)
No
'88' flashes: Check ECU terminal 1F voltage (page F-128). Voltage: Approx. 12V (Ignition switch ON). If OK, replace ECU (page F-127). If not OK, check wiring between ECU and Self-Diagnosis Checker (page F-7)
'88' flashes: Check ECU terminal 1F voltage (page F-128). Voltage: Approx. 12V (Ignition switch ON). If OK, replace ECU (page F-127). If not OK, check wiring between ECU and Self-Diagnosis Checker (page F-7)
No
4
Go to next step
5
Check switches for correct operation with Self-Diagnosis Checker Monitor Lamp and ignition switch ON (page F-89)
No
Lamp not ON/OFF with specified switch: Check for cause (Refer to specified check sequence) (page F-90)
No
Lamp always ON: Check wiring between ECU terminal 1D and Self-Diagnosis Checker (page F-7)
Yes
6
Go to next step
7
Disconnect oxygen sensor connector and check if condition improves
Yes
Check oxygen sensor (page F-138)
No
8
Go to next step
9
Check if ECU terminal voltages are OK (page F-128)
No
Check for cause (Refer to 'Check Point for Each Terminal') (page F-131)
Yes
10
Go to next step
See also
F-7OUTLINE - WIRING DIAGRAMF-78SELF-DIAGNOSIS FUNCTIONF-89SELF-DIAGNOSIS FUNCTIONF-90SELF-DIAGNOSIS FUNCTIONF-127CONTROL SYSTEM - Engine Control Unit InspectionF-128CONTROL SYSTEM - Engine Control Unit Terminal Voltage TableF-131CONTROL SYSTEM - Check Point for Each TerminalF-138CONTROL SYSTEMP-29PARKING BRAKE SYSTEM - PARKING BRAKE CABLE