Lexus ES300 (2002 year). Manual — part 400
A54396
VG
E2G
A55005
VG
E2G
E2
E9
A53763
E2 E2G
05-34
-
DIAGNOSTICS
SFI SYSTEM (1MZ-FE)
187
2002 LEXUS ES300 REPAIR MANUAL (RM911U)
4
CHECK HARNESS AND CONNECTOR(ECM - INTAKE AIR FLOW METER)
(a)
Disconnect the intake air flow meter connector.
(b)
Disconnect the ECM E9 connector.
(c)
Check for open between the terminals VG of the intake air
flow meter harness side connector and VG of the ECM
connector.
Resistance: 1
Ω
or less
(d)
Check for open between the terminals E2G of the intake
air flow meter harness side connector and E2G of the
ECM connector.
Resistance: 1
Ω
or less
(e)
Check for short between the terminals VG and E2G of the
ECM connector.
Resistance: 1
M
Ω
or more
(f)
Check for short between the terminals E2G and E2 of the
ECM connector.
Resistance: 1 M
Ω
or more
NG
REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE INTAKE AIR FLOW METER SUB-ASSY
5
INSPECT ECM
(a)
Check for open between the terminals E2G and E2 of the
ECM connector.
Resistance: 1
Ω
or less
NG
CHECK AND REPLACE ECM
OK
A54396
VG
E2
A55005
VG
E2G
E2
E9
-
DIAGNOSTICS
SFI SYSTEM (1MZ-FE)
05-35
188
2002 LEXUS ES300 REPAIR MANUAL (RM911U)
6
CHECK HARNESS AND CONNECTOR(ECM - INTAKE AIR FLOW METER)
(a)
Disconnect the intake air flow meter connector.
(b)
Disconnect the ECM E9 connector.
(c)
Check for open between the terminals VG of the intake
air flow meter harness side connector and VG of the ECM
connector.
Resistance: 1
Ω
or less
(d)
Check for open between the terminals E2 of the intake air
flow meter harness side connector and E2 of the ECM
connector.
Resistance: 1
Ω
or less
(e)
Connect the ECM connector.
(f)
Check for short between the terminals VG and E2G of the
ECM connector.
Resistance: 1 M
Ω
or more
NG
REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE INTAKE AIR FLOW METER SUB-ASSY
A59669
+B
E6
E9
E2G
A59656
3
A54396
E2G
05-36
-
DIAGNOSTICS
SFI SYSTEM (1MZ-FE)
189
2002 LEXUS ES300 REPAIR MANUAL (RM911U)
7
CHECK HARNESS AND CONNECTOR(E.F.I. ECU RELAY - INTAKE AIR FLOW
METER)
(a)
Disconnect the battery negative (-) terminal.
(b)
DIsconnect the ECM E6 connector.
(c)
Check for open between the terminals +B of the ECM
connector and 3 of the E.F.I. ECM relay installation relay
block.
Resistance: 1
Ω
or less
NOTICE:
Do not insert the tester leads so hard in the procedure (c),
or the holder may be damaged.
(d)
DIsconnect the ECM E9 connector.
(e)
Check for open between the terminals E2G of the intake
air flow meter harness side connector and E2G of the
ECM connector.
Resistance: 1
Ω
or less
NG
CHECK AND REPLACE HARNESS AND
CONNECTOR
OK
CHECK FOR ECM POWER SOURCE CIRCUIT
-
DIAGNOSTICS
SFI SYSTEM (1MZ-FE)
05-37
190
2002 LEXUS ES300 REPAIR MANUAL (RM911U)
DTC
P0101
MASS AIR FLOW CIRCUIT
RANGE/PERFORMANCE PROBLEM
CIRCUIT DESCRIPTION
Refer to DTC P0100 on page
DTC No.
DTC Detecting Condition
Trouble Area
P0101
Conditions (a), (b) and (c) continue 10 sec. or more with en-
gine speed NE < 900: (2 trip detection logic)
(a) Throttle valve fully closed
(b) Intake air flow meter output > 2.2 V
(c) THW
70
C
Intake air flow meter
P0101
Conditions (a) and (b) continue 10 sec. or more with engine
speed 1,500 rpm or more: (2 trip detection logic)
(a) VTA
0.63 V
(b) Intake air flow meter output < 1.06 V
Intake air flow meter
INSPECTION PROCEDURE
HINT:
Read freeze frame data using hand-held tester or OBD II scan tool. Because freeze frame records the en-
gine conditions when the malfunction is detected. When troubleshooting, it is useful for determining whether
the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich,
etc. at the time of the malfunction.
1
CHECK OTHER DTC OUTPUT(BESIDES DTC P0101)
NO
REPLACE INTAKE AIR FLOW METER
SUB-ASSY
YES
GO TO RELEVANT DTC CHART
051LV-07
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст