Infiniti I30 (A33). Manual — part 228
10
CHECK PCV VALVE
1. Install all removed parts.
2. Start engine and let it idle.
3. Remove PCV valve ventilation hose from PCV valve.
4. Make sure that a hissing noise will be heard as air passes through it and a strong vacuum should be felt immediately
when a finger is placed over valve inlet.
SEC137A
OK or NG
OK (With CONSULT-II)
©
GO TO 11.
OK (Without CONSULT-
II)
©
GO TO 12.
NG
©
Replace PCV valve.
GI
MA
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LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0133 (BANK 1), P0153 (BANK 2) HO2S1 (FRONT) (RESPONSE
MONITORING)
Diagnostic Procedure (Cont’d)
EC-227
11
CHECK HEATED OXYGEN SENSOR 1 (FRONT)
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “MANU TRIG” and adjust “TRIGGER POINT” to 100% in “DATA MONITOR” mode with CONSULT-II.
3. Select “HO2S1 (B1)/(B2)” and “HO2S1 MNTR (B1)/(B2)”.
4. Hold engine speed at 2,000 rpm under no load during the following steps.
5. Touch “RECORD” on CONSULT-II screen.
SEF646Y
6. Check the following.
I
“HO2S1 MNTR (B1)/(B2)” in “DATA MONITOR” mode changes from “RICH” to “LEAN” to “RICH” 5 times in 10 seconds.
5 times (cycles) are counted as shown below.
SEF647Y
I
“HO2S1 (B1)/(B2)” voltage goes above 0.6V at least once.
I
“HO2S1 (B1)/(B2)” voltage goes below 0.3V at least once.
I
“HO2S1 (B1)/(B2)” voltage never exceeds 1.0V.
SEF648Y
CAUTION:
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.
OK or NG
OK
©
GO TO 14.
NG
©
GO TO 13.
DTC P0133 (BANK 1), P0153 (BANK 2) HO2S1 (FRONT) (RESPONSE
MONITORING)
Diagnostic Procedure (Cont’d)
EC-228
12
CHECK HEATED OXYGEN SENSOR 1 (FRONT)
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Set voltmeter probes between ECM terminal 63 [HO2S1 (B1) signal] or 62 [HO2S1 (B2) signal] and engine ground.
3. Check the following with engine speed held at 2,000 rpm constant under no load.
SEF967XA
CAUTION:
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.
OK or NG
OK
©
GO TO 14.
NG
©
GO TO 13.
13
REPLACE HEATED OXYGEN SENSOR 1 (FRONT)
1. Turn ignition switch “OFF”.
2. Check heated oxygen sensor 1 (front) harness protector color.
SEC020C
©
Replace malfunctioning heated oxygen sensor 1 (front).
14
CHECK HO2S1 (FRONT) SHIELD CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect joint connector-17 or joint connector-18.
3. Check the following.
I
Continuity between joint connector terminal 1 or 2 and ground
I
Joint connector
(Refer to EL-525, “HARNESS LAYOUT”.)
Continuity should exist.
4. Also check harness for short to power.
5. Then reconnect joint connector-17 or joint connector-18.
OK or NG
OK
©
GO TO 15.
NG
©
Repair open circuit or short to power in harness or connectors.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0133 (BANK 1), P0153 (BANK 2) HO2S1 (FRONT) (RESPONSE
MONITORING)
Diagnostic Procedure (Cont’d)
EC-229
15
CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-144.
©
INSPECTION END
DTC P0133 (BANK 1), P0153 (BANK 2) HO2S1 (FRONT) (RESPONSE
MONITORING)
Diagnostic Procedure (Cont’d)
EC-230
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