Nissan Titan. Instruction — part 175
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CONTENTS
ENGINE CONTROL SYSTEM
VK56DE
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
On Board Diagnosis (OBD) System of Engine and
A/T . . . . . . . . . . . . . . . . . . .....
Precaution . . . . . . . . . . . . . . . .....
PREPARATION . . . . . . . . . . ...
PREPARATION . . . . . . . . . . . . ..
Special Service Tool . . . . . . . . . . . ...
Commercial Service Tool . . . . . . . . . .
SYSTEM DESCRIPTION . . . . . . . .
ENGINE CONTROL SYSTEM . . . . . . .
System Diagram . . . . . . . . . . . . . ..
Engine Control Component Parts Location . . . .
MULTIPORT FUEL INJECTION SYSTEM . . .
System Description . . . . . . . . . . . . .
ELECTRIC IGNITION SYSTEM . . . . . . .
System Description . . . . . . . . . . . . .
AIR CONDITIONING CUT CONTROL . . . ...
Input/Output Signal Chart . . . . . . . . . .
System Description . . . . . . . . . . . . .
AUTOMATIC SPEED CONTROL DEVICE
(ASCD) . . . . . . . . . . . . . . . ...
System Description . . . . . . . . . . . . .
Component Description . . . . . . . . . . ...
CAN COMMUNICATION . . . . . . . . .
System Description . . . . . . . . . . . . .
EVAPORATIVE EMISSION SYSTEM . . . .
Description . . . . . . . . . . . . . . . ...
INTAKE VALVE TIMING CONTROL . . . .
Description . . . . . . . . . . . . . . . ...
FUEL FILLER CAP WARNING SYSTEM . . .
System Diagram . . . . . . . . . . . . . .
System Description . . . . . . . . . . . . ..
ON BOARD DIAGNOSTIC (OBD) SYSTEM .
Diagnosis Description . . . . . . . . . . . ..
GST (Generic Scan Tool) . . . . . . . . . .
DIAGNOSIS SYSTEM (ECM) . . . . . . ...
DIAGNOSIS DESCRIPTION . . . . . . . . . ..
DIAGNOSIS DESCRIPTION : 1st Trip Detection
Logic and Two Trip Detection Logic . . . . . .
DIAGNOSIS DESCRIPTION : DTC and Freeze
Frame Data . . . . . . . . . . . . . . . ..
DIAGNOSIS DESCRIPTION : Counter System . ..
DIAGNOSIS DESCRIPTION : Driving Pattern . .
DIAGNOSIS DESCRIPTION : System Readiness
Test (SRT) Code . . . . . . . . . . . . . .
DIAGNOSIS DESCRIPTION : Permanent Diag-
nostic Trouble Code (Permanent DTC) . . . . ...
DIAGNOSIS DESCRIPTION : Malfunction Indica-
tor Lamp (MIL) . . . . . . . . . . . . . . .
On Board Diagnosis Function . . . . . . . . ..
CONSULT Function . . . . . . . . . . . . .
ECU DIAGNOSIS INFORMATION . . . ..
ECM . . . . . . . . . . . . . . . . ...
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .
ECM Harness Connector Terminal Layout . . . ..
ECM Terminal and Reference Value . . . . . ...
Fail-Safe Chart . . . . . . . . . . . . . .
DTC Inspection Priority Chart . . . . . . . . ..
DTC Index . . . . . . . . . . . . . . . ...
EC-2
WIRING DIAGRAM . . . . . . . . . .
ENGINE CONTROL SYSTEM . . . . . . ...
Wiring Diagram . . . . . . . . . . . . . ...
BASIC INSPECTION . . . . . . . . ..
DIAGNOSIS AND REPAIR WORKFLOW . ...
Trouble Diagnosis Introduction . . . . . . . ..
INSPECTION AND ADJUSTMENT . . . . .
Basic Inspection . . . . . . . . . . . . .
Idle Speed and Ignition Timing Check . . . . ...
Procedure After Replacing ECM . . . . . . ...
VIN Registration . . . . . . . . . . . . .
Accelerator Pedal Released Position Learning . .
Throttle Valve Closed Position Learning . . . ...
Ethanol Mixture Ratio Adaptation (Flexible Fuel
Vehicle) . . . . . . . . . . . . . . . . ..
Idle Air Volume Learning . . . . . . . . . ...
HOW TO SET SRT CODE . . . . . . . ...
Description . . . . . . . . . . . . . . . .
SRT Set Driving Pattern . . . . . . . . . .
Work Procedure . . . . . . . . . . . . . .
HOW TO ERASE PERMANENT DTC . . . .
Description . . . . . . . . . . . . . . . .
Work Procedure (Group A) . . . . . . . . .
Work Procedure (Group B) . . . . . . . . .
DTC/CIRCUIT DIAGNOSIS . . . . . .
TROUBLE DIAGNOSIS - SPECIFICATION
VALUE . . . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . .
Testing Condition . . . . . . . . . . . . ...
Inspection Procedure . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
POWER SUPPLY AND GROUND CIRCUIT ...
Diagnosis Procedure . . . . . . . . . . . .
Ground Inspection . . . . . . . . . . . . .
U0101 CAN COMM CIRCUIT . . . . . . ..
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
U1001 CAN COMM CIRCUIT . . . . . . ..
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
P0011, P0021 IVT CONTROL . . . . . . .
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0031, P0032, P0051, P0052 A/F SENSOR 1
HEATER . . . . . . . . . . . . . . ...
Description . . . . . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0037, P0038, P0057, P0058 HO2S2 HEAT-
ER . . . . . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0075, P0081 IVT CONTROL SOLENOID
VALVE . . . . . . . . . . . . . . . ..
Component Description . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0101 MAF SENSOR . . . . . . . . . ...
Component Description . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0102, P0103 MAF SENSOR . . . . . . ..
Component Description . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0111 IAT SENSOR . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Component Function Check . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0112, P0113 IAT SENSOR . . . . . . .
Component Description . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0116 ECT SENSOR . . . . . . . . . ...
Component Description . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Component Function Check . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0117, P0118 ECT SENSOR . . . . . . ...
Component Description . . . . . . . . . .
EC-3
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DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0122, P0123 TP SENSOR . . . . . . . .
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0125 ECT SENSOR . . . . . . . . . ...
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0127 IAT SENSOR . . . . . . . . . . .
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0128 THERMOSTAT FUNCTION . . . . ..
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0130, P0150 A/F SENSOR 1 . . . . . . .
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Overall Function Check . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
P0131, P0151 A/F SENSOR 1 . . . . . . .
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
P0132, P0152 A/F SENSOR 1 . . . . . . .
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
P0133, P0153 A/F SENSOR 1 . . . . . . .
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
P0137, P0157 HO2S2 . . . . . . . . . ..
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Overall Function Check . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0138, P0158 HO2S2 . . . . . . . . . .
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Overall Function Check . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0139, P0159 HO2S2 . . . . . . . . . .
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Overall Function Check . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0171, P0174 FUEL INJECTION SYSTEM
FUNCTION . . . . . . . . . . . . . ..
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
P0172, P0175 FUEL INJECTION SYSTEM
FUNCTION . . . . . . . . . . . . . ..
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
P0181 FTT SENSOR . . . . . . . . . ...
Component Description . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Component Function Check . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0182, P0183 FTT SENSOR . . . . . . ..
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0222, P0223 APP SENSOR . . . . . . .
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0300, P0301, P0302, P0303, P0304, P0305,
P0306, P0307, P0308 MISFIRE . . . . . ..
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
P0327, P0328, P0332, P0333 KS . . . . ...
Component Description . . . . . . . . . . .
EC-4
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0335 CKP SENSOR (POS) . . . . . . ...
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0340 CMP SENSOR (PHASE) . . . . . ..
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0420, P0430 THREE WAY CATALYST
FUNCTION . . . . . . . . . . . . . ...
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Overall Function Check . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
P0441 EVAP CONTROL SYSTEM . . . . ..
System Description . . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Overall Function Check . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0442 EVAP CONTROL SYSTEM . . . . ..
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE . . . . . ...
Description . . . . . . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0444, P0445 EVAP CANISTER PURGE
VOLUME CONTROL SOLENOID VALVE . ..
Description . . . . . . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
P0447 EVAP CANISTER VENT CONTROL
VALVE . . . . . . . . . . . . . . . .
Component Description . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0448 EVAP CANISTER VENT CONTROL
VALVE . . . . . . . . . . . . . . . ..
Component Description . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0451 EVAP CONTROL SYSTEM PRES-
SURE SENSOR . . . . . . . . . . . .
Component Description . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0452 EVAP CONTROL SYSTEM PRES-
SURE SENSOR . . . . . . . . . . . .
Component Description . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0453 EVAP CONTROL SYSTEM PRES-
SURE SENSOR . . . . . . . . . . . .
Component Description . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0455 EVAP CONTROL SYSTEM . . . . ..
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0456 EVAP CONTROL SYSTEM . . . . ..
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Overall Function Check . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
P0460 FUEL LEVEL SENSOR . . . . . . .
Component Description . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
DTC Confirmation Procedure . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
P0461 FUEL LEVEL SENSOR . . . . . . .
Component Description . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . .
Overall Function Check . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
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