ENGINE CONTROL SYSTEM 3-45
TROUBLESHOOTING
!
Before starting troubleshooting, read and follow the “PRECAUTION ON SYSTEM INSPECTION”
section on the page 3-36.
In this section, troubleshooting procedures are based on the assumption that “low pressure fuel system” and
“mechanical components (power unit, lower unit, etc.)” are normal.
NOTE:
For troubleshooting of “Starter motor will not run”, see the page 4-6.
CHART1: SELF-DIAGNOSTIC CODE “3-4”
START
< Ignition switch “ON” >
Check “35” terminal voltage.
Is result OK? (See page 3-38.)
< Ignition switch “ON” >
Check “29” terminal voltage.
Is result OK? (See page 3-38.)
Possible cause:
• ECM failure
• Wire continuity/connection failure
YES
YES
ECM failure
NO
MAP sensor failure
NO
CHART2: SELF-DIAGNOSTIC CODE “4-2”
START
< Ignition switch “OFF” >
Check CKP sensor signal.
Is result OK? (See page 3-42.)
Possible cause:
• ECM failure
• Wire continuity/connection failure
YES
CKP sensor failure
NO
NOTE:
• It will be possible to start the engine if the CKP sensor
has failed.
To Next Page
Loading...
