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6 CHECK MASS AIR FLOW SENSOR
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-II.
at idling: 0.9 - 5.8 g·m/sec
at 2,500 rpm: 7.5 - 13.2 g·m/sec
With GST
1. Start engine and warm it up to normal operating temperature.
2. Check mass air flow sensor signal in MODE 1 with GST.
at idling: 0.9 - 5.8 g·m/sec
at 2,500 rpm: 7.5 - 13.2 g·m/sec
OK or NG
OK 䊳 GO TO 7.
NG 䊳 Check connectors for rusted terminals or loose connections in the mass air flow sensor
circuit or engine grounds. Refer to EC-150.
7 CHECK FUNCTION OF INJECTORS
With CONSULT-II
1. Install all parts removed.
2. Start engine.
3. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II.
SEF190Y
4. Make sure that each circuit produces a momentary engine speed drop.
Without CONSULT-II
1. Install all parts removed.
2. Start engine.
3. Listen to each injector operating sound.
MEC703B
Clicking noise should be heard.
OK or NG
OK 䊳 GO TO 8.
NG 䊳 Perform trouble diagnosis for “INJECTORS”, EC-568.
DTC P0171 FUEL INJECTION SYSTEM FUNCTION
(LEAN SIDE)
KA24DE
Diagnostic Procedure (Cont’d)
EC-285
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
GI
MA
EM
LC
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