Infiniti I35 (A33). Manual — part 222
![](/vehicles/zatt/ltherawowha/yose/gheendanongh.png)
BANK 2
NHEC0878S02
MEC538D
SEC108D
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0132, P0152 HO2S1
Wiring Diagram (Cont’d)
EC-229
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Diagnostic Procedure
NHEC0879
1
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two engine ground screws.
Refer to “Ground Inspection”, EC-160.
SEC047D
OK or NG
OK
©
GO TO 2.
NG
©
Repair or replace ground connections.
2
RETIGHTEN HEATED OXYGEN SENSOR 1
Loosen and retighten corresponding heated oxygen sensor 1.
Tightening torque:
40 - 60 N·m (4.1 - 6.1 kg-m, 30 - 44 ft-lb)
©
GO TO 3.
DTC P0132, P0152 HO2S1
Diagnostic Procedure
EC-230
![](/vehicles/zatt/ltherawowha/yose/xthe.png)
3
CHECK HO2S1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Disconnect heated oxygen sensor 1 harness connector.
SEC099D
SEC134D
3. Check harness continuity between ECM terminal and HO2S1 terminal as follows.
Refer to Wiring Diagram.
MTBL1144
Continuity should exist.
4. Check harness continuity between ECM terminal or HO2S1 terminal and ground as follows.
Refer to Wiring Diagram.
MTBL1145
Continuity should not exist.
5. Also check harness for short to power.
OK or NG
OK
©
GO TO 4.
NG
©
Repair open circuit or short to ground 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 P0132, P0152 HO2S1
Diagnostic Procedure (Cont’d)
EC-231
![](/vehicles/zatt/ltherawowha/yose/whelunat.png)
4
CHECK HO2S1 CONNECTOR FOR WATER
1. Disconnect heated oxygen sensor 1 harness connector.
2. Check connectors for water.
Water should not exist.
OK or NG
OK (With CONSULT-II)
©
GO TO 5.
OK (Without CONSULT-
II)
©
GO TO 6.
NG
©
Repair or replace harness or connectors.
DTC P0132, P0152 HO2S1
Diagnostic Procedure (Cont’d)
EC-232
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