6E1-42
ENGINE AND EMISSION CONTROL SYSTEM
B-10 FUEL CUT OPERATION CHECK
1. ECM
2. ECM coupler
3. TP sensor
STEP
ACTION
YES
NO
1
Check fuel cut operation referring FUEL CUT OPERA-
TION INSPECTION in this section.
Does fuel injector operate as specified?
Fuel cut operation is
in good condition.
Go to step 2.
2
Closed throttle position check:
1) Connect Tech-1 to DLC.
2) With the ignition switch ON position, check “CLOSED
THROT POS” in parameter data list.
Throttle valve fully close : ON
Throttle valve slight open : OFF
Is each check result as specified?
Substitute a known
good ECM and re-
check.
Go to step 3.
3
Closed throttle position recheck:
1) With the ignition switch OFF position disconnect neg-
ative battery cable for 30 seconds and connect it.
2) Recheck closed throttle position referring to Step 2.
Is each check result as specified?
Recheck fuel cut op-
eration.
Go to step 4.
4
TP sensor signal voltage check:
1) With the ignition switch at ON position, check voltage
between E33-206 and ground.
Throttle valve fully close: 0.78 – 0.83V
Throttle valve fully open: 3.7 – 4.7V
Is each check result as specified?
Substitute a known
good ECM and re-
check fuel cut opera-
tion.
Check TP sensor re-
ferring to TP SEN-
SOR INSPECTION in
this section.