2003 NISSAN X-TRAIL Service Repair Manual

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Page 1169 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual HO2S1
EC-791
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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 a

Page 1170 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-792
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HO2S2

HO2S2PFP:226A0
Component DescriptionEBS0113R
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the exhaust gas.
Even

Page 1171 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual HO2S2
EC-793
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Wiring DiagramEBS0113T
TBWA0647E

Page 1172 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-794
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HO2S2

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output v

Page 1173 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual HO2S2
EC-795
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3. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground three screws on the body.
Refer to EC-578, "
Gr

Page 1174 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-796
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HO2S2

5. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 16 and HO2S2 terminal 2.
Refer to Wiring Diagram.
2. Chec

Page 1175 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual HO2S2
EC-797
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6. Check “HO2S2 (B1)” at idle speed when adjusting “FUEL INJECTION” to ±25%.
“HO2S2 (B1)” should be above 0.68V at least o

HO2S2
EC-797
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6. Check “HO2S2 (B1)” at idle speed when adjusting “FUEL INJECTION” to ±25%.
“HO2S2 (B1)” should be above 0.68V at least once when the “FUEL INJECTION” is +25%.
“HO2S2 (B1)” should be below 0.50V at least once when the “FUEL INJECTION” is −25%.
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.
Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Without CONSULT-II
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed at between 3,500 and 4,000 rpm for at least 1 minute under no
load.
4. Let engine idle for 1 minute.
5. Set voltmeter probes between ECM terminal 16 (HO2S2 signal) and ground.
6. Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.68V at least once during this
procedure.
If the voltage is above 0.68V at step 6, step 7 is not neces-
sary.
7. Keep vehicle idling for 10 minutes, then check voltage. Or check
the voltage when coasting from 80 km/h (50 MPH) in D position
with “OD” OFF (A/T). 3rd gear position (M/T).
The voltage should be below 0.50V at least once during this
procedure.
8. If NG, replace heated oxygen sensor 2.
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.
Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Removal and InstallationEBS0113W
HEATED OXYGEN SENSOR 2
Refer to EX-2, "EXHAUST SYSTEM" .
PBIB0551E
MBIB0020E

Page 1176 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-798
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IGNITION SIGNAL

IGNITION SIGNALPFP:22448
Component DescriptionEBS0113X
IGNITION COIL & POWER TRANSISTOR
The ignition signal from the ECM is sent to and amplified by th

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