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5 DETECT MALFUNCTIONING PART
Check the following.
쐌 Fuel pump and circuit (Refer to EC-1177.)
쐌 Fuel pressure regulator (Refer to EC-638.)
䊳 Repair or replace.
6 CHECK MASS AIR FLOW SENSOR
With CONSULT-II
1. Install all parts removed.
2. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-II.
3.3 - 4.8 g·m/sec: at idling
12.0 - 14.9 g·m/sec: at 2,500 rpm
With GST
1. Install all parts removed.
2. Check mass air flow sensor signal in MODE 1 with GST.
3.3 - 4.8 g·m/sec: at idling
12.0 - 14.9 g·m/sec: at 2,500 rpm
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-739.
DTC P0172 (RIGHT, -B1), P0175 (LEFT, -B2) FUEL INJECTION
SYSTEM FUNCTION (RICH)
VG33E
Diagnostic Procedure (Cont’d)
EC-899
GI
MA
EM
LC
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
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