check engine INFINITI FX35 2007 Service Manual

COMBINATION METERS DI-21
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Engine Coolant Temperature Signal InspectionNKS002ZR
Symptom: Water temperature gauge indication is malfunction.
1. CHECK COMBINATION METER INPUT SIGNAL
1. Connect CONSULT-II, and start engine.
2. Select “METER A/C AMP” on CONSULT-II.
3. Using “W TEMP METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with water temperature gauge
pointer of combination meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “ENGINE” on CONSULT-II.
2. Using “COOLAN TEMP/S” on “DATA MONITOR”, print out the CONSULT-II screen.
3. Select “METER A/C AMP” on CONSULT-II.
4. Using “W TEMP METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with that of the “COOLAN TEMP/S”.
OK or NG
OK >> Perform ECM self-diagnosis. Refer to EC-118, "CON-
SULT-II Function (ENGINE)" (VQ35DE) or EC-781,
"CONSULT-II Function (ENGINE)" (VK45DE).
NG >> Replace unified meter and A/C amp. Refer to DI-37,
"Removal and Installation of Unified Meter and A/C
Amp." .
Fuel Level Sensor Signal InspectionNKS002ZS
Symptom:

Fuel gauge indication is malfunctioning.

Low-fuel warning lamp indication is irregular.
NOTE:
The following symptoms are not malfunctions.
Fuel gauge

Depending on vehicle posture or driving circumstance, the fuel level in the tank varies, and the pointer
may fluctuate.

If the vehicle is fueled with the ignition switch ON, the pointer will move slowly.
Low-fuel warning lamp

Depending on vehicle posture or driving circumstance, the fuel in the tank flows and the warning lamp ON
timing may change.
Water temperature gauge pointer Reference value of data monitor [ °C ( °F)]
Hot Approx. 130 (266)
Middle Approx. 70 - 105 (158 - 221) Cold Approx. 50 (122)
PKIA2091E
SKIA4368E

DI-28
UNIFIED METER AND A/C AMP
Revision: 2006 July 2007 FX35/FX45
UNIFIED METER AND A/C AMPPFP:27760
System DescriptionNKS00300

For the unified meter and A/C amp., the signal required for controlling the combination meter are inte-
grated in the A/C auto amp.

The unified meter and A/C amp. corresponds to a CONSULT-II function (self-diagnosis results, CAN diag-
nosis support monitor, data monitor).
COMBINATION METER CONTROL FUNCTION

Unified meter and A/C amp. receives necessary information for combination meter from each unit by CAN
communication.

Unified meter and A/C amp. transmits a signals with communication line (TX, RX) between unified meter
and A/C amp. and combination meter.
Input/output signals between unified meter and A/C amp. and combination meter.
NOTE:
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malfunctioning. Refer to DI-8,
"FAIL-SAFE" . Unit Input Output
Unified meter and A/C amp.

Seat belt buckle switch signal (Driver's side)

Parking brake signal

Illumination control nighttime required signal

Refuel status signal

Low-fuel warning lamp condition signal

Combination meter receive error signal

Delivery destination data signal

Combination meter specifications signal

Vehicle speed signal (8-pulse)

Engine speed signal

Engine coolant temperature signal

Fuel level sensor signal (resistance value)

Malfunction indicator lamp signal

ABS warning lamp signal

Low tire pressure warning lamp signal

Run-flat tire warning lamp signal

Brake warning lamp signal

A/T CHECK warning lamp signal

ICC warning lamp signal

Oil pressure switch signal

Door switch signal

AWD warning lamp signal

Key warning lamp signal

VDC OFF indicator lamp signal

SLIP indicator lamp signal

CRUISE indicator lamp signal

SET indicator lamp signal

High beam request signal

Turn indicator signal

Snow mode switch signal

ICC system display signal

Shift position indicator signal

Manual mode indicator signal

Manual mode gear position signal

CAN communication condition signal of A/T

Position lights request signal

Buzzer output signal

UNIFIED METER AND A/C AMP DI-35
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Revision: 2006 July 2007 FX35/FX45
2. CHECK METER/GAUGES VISUALLY
Check the pointer on the meter/gauge fluctuate at the engine start.
Is the fluctuation acceptable?
YES >> GO TO 3.
NO >> GO TO 6.
3. CHECK CONTINUITY COMMUNICATION CIRCUIT (TX: COMBINATION METER)
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and unified meter and A/C amp. connector.
3. Check continuity between combination meter harness connector M20 terminal 13 and unified meter and A/C amp. harness con-
nector M55 terminal 19.
4. Check continuity between combination meter harness connector M20 terminal 13 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK VOLTAGE OF UNIFIED METER AND A/C AMP.
1. Connect unified meter and A/C amp. connector.
2. Turn ignition switch ON.
3. Check voltage between combination meter harness connector M20 terminal 13 and ground.
OK or NG
OK >> GO TO 5.
NG >> Replace unified meter and A/C amp. Refer to DI-37,
"Removal and Installation of Unified Meter and A/C
Amp."
13 – 19 : Continuity should exist.
13 – Ground : Continuity should not exist.
SKIA4837E
13 – Ground : Approx. 5 V
SKIA4886E

WARNING LAMPS DI-49
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Revision: 2006 July 2007 FX35/FX45
6. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “METER A/C AMP” on CONSULT-II.
2. Operate ignition switch with “OIL W/L” of “DATA MONITOR” and check operation status.
OK or NG
OK >> Replace combination meter.
NG >> GO TO 7.
7. CHECK BCM INPUT SIGNAL
1. Select “BCM” on CONSULT-II.
2. Select “DATA MONITOR” of “SIGNAL BUFFER”.
3. Operate ignition switch with “OIL PRESS SW” of “DATA MONI- TOR” and check operate status.
OK or NG
OK >> Replace BCM. Refer to BCS-14, "Removal and Installa-
tion of BCM" .
NG >> Replace IPDM E/R. Refer to PG-28, "
Removal and
Installation of IPDM E/R" .
Oil Pressure Warning Lamp Does Not Turn Off (Oil Pressure Is Normal)NKS0030F
NOTE:
For oil pressure inspection, refer to LU-8, "
OIL PRESSURE CHECK" (VQ35DE) or LU-25, "OIL PRESSURE
CHECK" (VK45DE)
1. CHECK OIL PRESSURE WARNING LAMP OPERATION
Activate IPDM E/R auto active test. Refer to PG-21, "
Auto Active Test" .
Does oil pressure warning lamp blink?
YES >> GO TO 2.
NO >> GO TO 5. “OIL W/L”
When ignition switch is in ON
position (Engine stopped) : ON
When engine running : OFF
PKIA2064E
“OIL PRESS SW”
When ignition switch is in ON
position (Engine stopped) : ON
When engine running : OFF
SKIA8709E

WARNING LAMPS DI-51
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Component InspectionNKS0030G
OIL PRESSURE SWITCH
Check continuity between oil pressure switch and ground.
Condition
Oil pressure [kPa (kg/cm2 , psi)] Continuity
Engine stopped Less than 29 (0.3, 4) Yes Engine running More than 29 (0.3, 4) No
ELF0044D

DI-80
LANE DEPARTURE WARNING SYSTEM
Revision: 2006 July 2007 FX35/FX45
Action TestNKS00314
LDW SYSTEM RUNNING TEST
WARNING:

Be careful when performing road test.

Understand “Precautions” and “System Description” well before the road test. Refer to DI-77,
"Precautions for Lane Departure Warning (LDW) system" and DI-77, "System Description" .
Function Check
Check the LDW system operation according to the condition that the warning function works. Refer to DI-77,
"LDW SYSTEM OPERATION" .
Camera Aiming AdjustmentNKS00315
OUTLINE
Adjust the camera aiming every time the LDW camera unit is removed or installed.
CAUTION:

Place the vehicle on the level ground when the camera aiming adjustment is operated.

Follow the CONSULT-II when adjusting the camera aiming. (Camera aiming adjustment cannot be
operated without CONSULT-II.)
PREPARATION

Keep all tires inflated to correct pressures. Adjust the tire pressure to the specified pressure value.

There is no-load in vehicle. Check if coolant, engine oil are filled up to correct level and fuel tank is full.

Shift the gear into “P” position and release the parking brake.

Clean the windshield.
NOTE:
Do not place anything reflective on the upper surface of instrument panel.
TARGET SETTING
Preparation Aiming Adjustment Jig
For aiming adjustment, prepare the following jigs and targets.
PKIB4693E

LANE DEPARTURE WARNING SYSTEM DI-83
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7. Mark point at the center of the point “E” and “F”, on the line
“FW”.
CAUTION:
Make sure that “E” through “X” is equal to “F” through “X”.
8. Position the center of the right target to the point of “X”.
VEHICLE HEIGHT CHECK
Measure the wheel arch height. And calculate “Dh”.
NOTE:
“Dh” may be calculated as a minus value.
AIMING ADJUSTMENT
Operation Procedure
CAUTION:

Perform the adjustment under unloaded vehicle condition.

LDW indicator is turned off after the removal/installation, and blinks after replacement.
1. With the ignition switch OFF, connect CONSULT-II and CON- SULT-II CONVERTER to the data link connector, and then turn
ignition switch ON.
2. Start the engine, wait for at least 10 seconds, and touch “START (NISSAN BASED VHCL)”.
PKIB5331E
Dh [mm] = (Hfl + Hfr) ÷ 2 − 840
where, Hfl: Front left wheel arch height [mm]
Hfr: Front right wheel arch height [mm]
SKIB3164E
PBIB1503E
BCIA0029E

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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EC
Revision: 2006 July 2007 FX35/FX45
ENGINE CONTROL SYSTEM
VQ35DE
INDEX FOR DTC ...................................................... 15
DTC No. Index .................................................... ... 15
Alphabetical Index ............................................... ... 19
PRECAUTIONS ..................................................... ... 23
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ... 23
Precautions for Procedures without Cowl Top Cover ... 23
On Board Diagnostic (OBD) System of Engine and
A/T ....................................................................... ... 23
Precaution ........................................................... ... 24
PREPARATION ...................................................... ... 27
Special Service Tools .......................................... ... 27
Commercial Service Tools ................................... ... 28
ENGINE CONTROL SYSTEM ............................... ... 29
System Diagram .................................................. ... 29
Multiport Fuel Injection (MFI) System ................. ... 30
Electronic Ignition (EI) System ............................ ... 32
Fuel Cut Control (at No Load and High Engine
Speed) ................................................................. ... 33
AIR CONDITIONING CUT CONTROL .................. ... 34
Input/Output Signal Chart .................................... ... 34
System Description ............................................. ... 34
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ... 35
System Description ............................................. ... 35
Component Description ....................................... ... 36
CAN COMMUNICATION ....................................... ... 37
System Description ............................................. ... 37
EVAPORATIVE EMISSION SYSTEM .................... ... 38
Description .......................................................... ... 38
Component Inspection ........................................ ... 41
Removal and Installation ..................................... ... 42
How to Detect Fuel Vapor Leakage .................... ... 42
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ................................................................... ... 45
System Description ............................................. ... 45
Diagnostic Procedure .......................................... ... 46
Component Inspection ........................................ ... 48 POSITIVE CRANKCASE VENTILATION ..............
... 50
Description ........................................................... ... 50
Component Inspection ......................................... ... 50
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ..................................................................... ... 52
Description ........................................................... ... 52
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......... ... 53
Introduction .......................................................... ... 53
Two Trip Detection Logic ..................................... ... 53
Emission-Related Diagnostic Information ............ ... 54
Malfunction Indicator Lamp (MIL) ........................ ... 67
OBD System Operation Chart ............................. ... 71
BASIC SERVICE PROCEDURE ............................ ... 76
Basic Inspection .................................................. ... 76
Idle Speed and Ignition Timing Check ................. ... 81
Procedure After Replacing ECM ......................... ... 82
VIN Registration .................................................. ... 82
Accelerator Pedal Released Position Learning ... ... 83
Throttle Valve Closed Position Learning .............. ... 83
Idle Air Volume Learning ..................................... ... 83
Fuel Pressure Check ........................................... ... 85
TROUBLE DIAGNOSIS ......................................... ... 87
Trouble Diagnosis Introduction ............................ ... 87
DTC Inspection Priority Chart .............................. ... 93
Fail-Safe Chart .................................................... ... 95
Symptom Matrix Chart ......................................... ... 96
Engine Control Component Parts Location ......... .100
Vacuum Hose Drawing ........................................ .106
Circuit Diagram .................................................... .107
ECM Harness Connector Terminal Layout .......... .109
ECM Terminals and Reference Value .................. .109
CONSULT-II Function (ENGINE) ......................... .118
Generic Scan Tool (GST) Function ...................... .129
CONSULT-II Reference Value in Data Monitor .... .132
Major Sensor Reference Graph in Data Monitor
Mode .................................................................... .134
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .137
Description ........................................................... .137
Testing Condition ................................................. .137

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DTC Confirmation Procedure ..............................
. 434
Wiring Diagram ................................................... . 435
Diagnostic Procedure .......................................... . 436
Component Inspection ........................................ . 440
DTC P0455 EVAP CONTROL SYSTEM ............... . 441
On Board Diagnosis Logic .................................. . 441
DTC Confirmation Procedure .............................. . 442
Diagnostic Procedure .......................................... . 443
DTC P0456 EVAP CONTROL SYSTEM ............... . 449
On Board Diagnosis Logic .................................. . 449
DTC Confirmation Procedure .............................. . 450
Overall Function Check ....................................... . 451
Diagnostic Procedure .......................................... . 452
DTC P0460 FUEL LEVEL SENSOR ..................... . 459
Component Description ....................................... . 459
On Board Diagnosis Logic .................................. . 459
DTC Confirmation Procedure .............................. . 459
Diagnostic Procedure .......................................... . 460
Removal and Installation ..................................... . 460
DTC P0461 FUEL LEVEL SENSOR ..................... . 461
Component Description ....................................... . 461
On Board Diagnosis Logic .................................. . 461
Overall Function Check ....................................... . 461
Diagnostic Procedure .......................................... . 462
Removal and Installation ..................................... . 462
DTC P0462, P0463 FUEL LEVEL SENSOR ......... . 463
Component Description ....................................... . 463
On Board Diagnosis Logic .................................. . 463
DTC Confirmation Procedure .............................. . 463
Diagnostic Procedure .......................................... . 464
Removal and Installation ..................................... . 464
DTC P0500 VSS .................................................... . 465
Description .......................................................... . 465
On Board Diagnosis Logic .................................. . 465
DTC Confirmation Procedure .............................. . 465
Overall Function Check ....................................... . 466
Diagnostic Procedure .......................................... . 466
DTC P0506 ISC SYSTEM ...................................... . 467
Description .......................................................... . 467
On Board Diagnosis Logic .................................. . 467
DTC Confirmation Procedure .............................. . 467
Diagnostic Procedure .......................................... . 468
DTC P0507 ISC SYSTEM ...................................... . 469
Description .......................................................... . 469
On Board Diagnosis Logic .................................. . 469
DTC Confirmation Procedure .............................. . 469
Diagnostic Procedure .......................................... . 470
DTC P0550 PSP SENSOR .................................... . 471
Component Description ....................................... . 471
CONSULT-II Reference Value in Data Monitor Mode . 471
On Board Diagnosis Logic .................................. . 471
DTC Confirmation Procedure .............................. . 471
Wiring Diagram ................................................... . 472
Diagnostic Procedure .......................................... . 473
Component Inspection ........................................ . 475
Removal and Installation ..................................... . 475
DTC P0603 ECM POWER SUPPLY ...................... . 476
Component Description ....................................... . 476 On Board Diagnosis Logic ...................................
.476
DTC Confirmation Procedure .............................. .476
Wiring Diagram .................................................... .477
Diagnostic Procedure .......................................... .478
DTC P0605 ECM .................................................... .480
Component Description ....................................... .480
On Board Diagnosis Logic ................................... .480
DTC Confirmation Procedure .............................. .480
Diagnostic Procedure .......................................... .481
DTC P0643 SENSOR POWER SUPPLY ............... .483
On Board Diagnosis Logic ................................... .483
DTC Confirmation Procedure .............................. .483
Wiring Diagram .................................................... .484
Diagnostic Procedure .......................................... .486
DTC P0850 PNP SWITCH ..................................... .488
Component Description ....................................... .488
CONSULT-II Reference Value in Data Monitor Mode .488
On Board Diagnosis Logic ................................... .488
DTC Confirmation Procedure .............................. .488
Overall Function Check ....................................... .489
Wiring Diagram .................................................... .490
Diagnostic Procedure .......................................... .491
DTC P1148, P1168 CLOSED LOOP CONTROL ... .493
On Board Diagnosis Logic ................................... .493
DTC P1211 TCS CONTROL UNIT ......................... .494
Description ........................................................... .494
On Board Diagnosis Logic ................................... .494
DTC Confirmation Procedure .............................. .494
Diagnostic Procedure .......................................... .494
DTC P1212 TCS COMMUNICATION LINE ........... .495
Description ........................................................... .495
On Board Diagnosis Logic ................................... .495
DTC Confirmation Procedure .............................. .495
Diagnostic Procedure .......................................... .495
DTC P1217 ENGINE OVER TEMPERATURE ....... .496
Description ........................................................... .496
CONSULT-II Reference Value in Data Monitor Mode .497
On Board Diagnosis Logic ................................... .497
Overall Function Check ....................................... .498
Wiring Diagram .................................................... .500
Diagnostic Procedure .......................................... .502
Main 12 Causes of Overheating .......................... .507
Component Inspection ......................................... .507
DTC P1225 TP SENSOR ....................................... .509
Component Description ....................................... .509
On Board Diagnosis Logic ................................... .509
DTC Confirmation Procedure .............................. .509
Diagnostic Procedure .......................................... .510
Removal and Installation ..................................... .510
DTC P1226 TP SENSOR ....................................... .511
Component Description ....................................... .511
On Board Diagnosis Logic ................................... .511
DTC Confirmation Procedure .............................. .511
Diagnostic Procedure .......................................... .512
Removal and Installation ..................................... .512
DTC P1421 COLD START CONTROL .................. .513
Description ........................................................... .513

EC-8Revision: 2006 July 2007 FX35/FX45
Precautions for Procedures without Cowl Top Cover
.685
On Board Diagnostic (OBD) System of Engine and
A/T ....................................................................... .685
Precaution ........................................................... .686
PREPARATION ...................................................... .689
Special Service Tools .......................................... .689
Commercial Service Tools ................................... .690
ENGINE CONTROL SYSTEM ............................... .691
System Diagram .................................................. .691
Multiport Fuel Injection (MFI) System .................. .692
Electronic Ignition (EI) System ............................ .694
Fuel Cut Control (at No Load and High Engine
Speed) ................................................................. .695
AIR CONDITIONING CUT CONTROL ................... .696
Input/Output Signal Chart .................................... .696
System Description .............................................. .696
AUTOMATIC SPEED CONTROL DEVICE (ASCD) .697
System Description .............................................. .697
Component Description ....................................... .698
CAN COMMUNICATION ........................................ .699
System Description .............................................. .699
EVAPORATIVE EMISSION SYSTEM .................... .700
Description ........................................................... .700
Component Inspection ......................................... .703
Removal and Installation ..................................... .704
How to Detect Fuel Vapor Leakage ..................... .704
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ................................................................... .707
System Description .............................................. .707
Diagnostic Procedure .......................................... .708
Component Inspection ......................................... .710
POSITIVE CRANKCASE VENTILATION .............. .712
Description ........................................................... .712
Component Inspection ......................................... .712
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ..................................................................... .714
Description ........................................................... .714
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......... .715
Introduction .......................................................... .715
Two Trip Detection Logic ..................................... .715
Emission-related Diagnostic Information ............. .716
Malfunction Indicator Lamp (MIL) ........................ .730
OBD System Operation Chart ............................. .732
BASIC SERVICE PROCEDURE ............................ .738
Basic Inspection .................................................. .738
Idle Speed and Ignition Timing Check ................. .743
Procedure After Replacing ECM ......................... .744
VIN Registration .................................................. .744
Accelerator Pedal Released Position Learning ... .745
Throttle Valve Closed Position Learning .............. .745
Idle Air Volume Learning ..................................... .745
Fuel Pressure Check ........................................... .747
TROUBLE DIAGNOSIS ......................................... .749
Trouble Diagnosis Introduction ............................ .749
DTC Inspection Priority Chart .............................. .755
Fail-Safe Chart .................................................... .757
Symptom Matrix Chart ......................................... .758
Engine Control Component Parts Location ......... .762
Vacuum Hose Drawing ........................................ .769 Circuit Diagram ....................................................
.770
ECM Harness Connector Terminal Layout ........... .772
ECM Terminals and Reference Value .................. .772
CONSULT-II Function (ENGINE) ......................... .781
Generic Scan Tool (GST) Function ...................... .793
CONSULT-II Reference Value in Data Monitor .... .796
Major Sensor Reference Graph in Data Monitor
Mode .................................................................... .800
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .802
Description ........................................................... .802
Testing Condition ................................................. .802
Inspection Procedure ........................................... .802
Diagnostic Procedure ........................................... .803
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ...................................................................... .812
Description ........................................................... .812
Diagnostic Procedure ........................................... .812
POWER SUPPLY AND GROUND CIRCUIT .......... .813
Wiring Diagram .................................................... .813
Diagnostic Procedure ........................................... .814
Ground Inspection ................................................ .819
DTC U1000, U1001 CAN COMMUNICATION LINE .820
Description ........................................................... .820
On Board Diagnosis Logic ................................... .820
DTC Confirmation Procedure ............................... .820
Wiring Diagram .................................................... .821
Diagnostic Procedure ........................................... .822
DTC U1010 CAN COMMUNICATION .................... .823
Description ........................................................... .823
On Board Diagnosis Logic ................................... .823
DTC Confirmation Procedure ............................... .823
Diagnostic Procedure ........................................... .824
DTC P0011, P0021 IVT CONTROL ........................ .825
Description ........................................................... .825
CONSULT-II Reference Value in Data Monitor Mode .826
On Board Diagnosis Logic ................................... .826
DTC Confirmation Procedure ............................... .827
Wiring Diagram .................................................... .828
Diagnostic Procedure ........................................... .831
Component Inspection ......................................... .835
Removal and Installation ...................................... .836
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1
HEATER .................................................................. .837
Description ........................................................... .837
CONSULT-II Reference Value in Data Monitor Mode .837
On Board Diagnosis Logic ................................... .837
DTC Confirmation Procedure ............................... .837
Wiring Diagram .................................................... .838
Diagnostic Procedure ........................................... .841
Component Inspection ......................................... .843
Removal and Installation ...................................... .843
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER .844
Description ........................................................... .844
CONSULT-II Reference Value in Data Monitor Mode .844
On Board Diagnosis Logic ................................... .844
DTC Confirmation Procedure ............................... .845