Engine Control System: Other Nissan Titan I

ALPHABETICAL INDEX

Note. If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000, U1001. Refer to DTC U1000, U1001 CAN COMMUNICATION LINE .

Scheme 604

Scheme 605

Scheme 606

Scheme 607

PRECAUTIONS FOR SUPPLEMENTAL RESTRAINT SYSTEM (SRS) "AIR BAG" AND "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in AIR BAG RESTRAINT SYSTEMS and SEAT BELTS in RESTRAINTS. .

SPECIAL SERVICE TOOLS

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Scheme 608

Scheme 609

Scheme 610

TWO TRIP DETECTION LOGIC

When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the ECM memory. The MIL will not light up at this stage. < 1st trip >

If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in the ECM memory, and the MIL lights up. The MIL lights up at the same time when the DTC is stored. < 2nd trip > The "trip" in the "Two Trip Detection Logic" means a driving mode in which self-diagnosis is performed during vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MIL, and store DTC and Freeze Frame data, even in the 1st trip, as shown below.

Scheme 611

When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting MIL up when there is malfunction on engine control system.

Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means of operating fail-safe function.

The fail-safe function also operates when above diagnoses except MIL circuit are detected, and demands the driver to repair the malfunction. During fail-safe function, engine speed will not exceed 2500 RPM, due to fuel cut.

Scheme 612

Scheme 613

Scheme 614

Scheme 615

FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA

The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant temperature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, base fuel schedule and intake air temperature at the moment a malfunction is detected.

Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data. The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For details, see FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA .

Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the following priorities to update the data.

Scheme 616

For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was stored in the 2nd trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different malfunction is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st trip freeze frame data can be stored in the ECM). If freeze frame data is stored in the ECM memory and freeze frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the ECM memory.

Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM memory is erased. Procedures for clearing the ECM memory are described in HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION .

SRT Item

The table below shows required self-diagnostic items to set the SRT to "CMPLT".

Scheme 617

SRT Set Timing

SRT is set as "CMPLT" after self-diagnosis has been performed one or more times. Completion of SRT is done regardless of whether the result is OK or NG. The set timing is different between OK and NG results. (Scheme 618)

Scheme 618

When all SRT related self-diagnoses showed OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will indicate "CMPLT". --> Case 1 above

When all SRT related self-diagnoses showed OK results through several different cycles, the SRT will indicate "CMPLT" at the time the respective self-diagnoses have at least one OK result. --> Case 2 above

If one or more SRT related self-diagnoses showed NG results in 2 consecutive cycles, the SRT will also indicate "CMPLT". --> Case 3 above

The table above shows that the minimum number of cycles for setting SRT as "INCMP" is one (1) for each self-diagnosis (Case 1 & 2) or two (2) for one of self-diagnoses (Case 3). However, in preparation for the state emissions inspection, it is unnecessary for each self-diagnosis to be executed twice (Case 3) for the following reasons

1. The SRT will indicate "CMPLT" at the time the respective self-diagnoses have one (1) OK result.
2. The emissions inspection requires "CMPLT" of the SRT only with OK self-diagnosis results.
3. When, during SRT driving pattern, 1st trip DTC (NG) is detected prior to "CMPLT" of SRT, the self-diagnosis memory must be erased from ECM after repair.
4. If the 1st trip DTC is erased, all the SRT will indicate "INCMP". NOTE: SRT can be set as "CMPLT" together with the DTC(s). Therefore, DTC check must always be carried out prior to the state emission inspection even though the SRT indicates "CMPLT".

SRT Service Procedure

If a vehicle has failed the state emissions inspection due to one or more SRT items indicating "INCMP", review the flowchart diagnostic sequence table.

Scheme 619

How to Display SRT Code

WITH CONSULT-II

Selecting "SRT STATUS" in "DTC CONFIRMATION" mode with CONSULT-II.

For items whose SRT codes are set, a "CMPLT" is displayed on the CONSULT-II screen; for items whose SRT codes are not set, "INCMP" is displayed.

A sample of CONSULT-II display for SRT code is shown at right.

"INCMP" means the self-diagnosis is incomplete and SRT is not set.

"CMPLT" means the self-diagnosis is complete and SRT is set.

WITH GST

Selecting MODE 1 with GST (Generic Scan Tool)

Scheme 620

How to Set SRT Code

To set all SRT codes, self-diagnosis for the items indicated above must be performed one or more times. Each diagnosis may require a long period of actual driving under various conditions.

WITH CONSULT-II

Perform corresponding DTC Confirmation Procedure one by one based on Performance Priority in the table in SYSTEM READINESS TEST (SRT) CODE .

WITHOUT CONSULT-II

The most efficient driving pattern in which SRT codes can be properly set is explained on the next page. The driving pattern should be performed one or more times to set all SRT codes.

Scheme 621

1. The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driving habits, etc. Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the shortest. Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed within zone A. *: Normal conditions refer to the following
2. Sea level
3. Flat road
4. Ambient air temperature: 20 - 30°C (68 - 86°F)
5. Diagnosis is performed as quickly as possible under normal conditions. Under different conditions [For example: ambient air temperature other than 20 - 30°C (68 - 86°F)], diagnosis may also be performed.

Scheme 622

1. Pattern 1: The engine is started at the engine coolant temperature of -10 to 35°C (14 to 95°F) (where the voltage between the ECM terminal 73 and ground is 3.0 -4.3V). The engine must be operated at idle speed until the engine coolant temperature is greater than 70°C (158°F) (where the voltage between the ECM terminal 73 and ground is lower than 1.4V). The engine is started at the fuel tank temperature of warmer than 0°C (32°F) (where the voltage between the ECM terminal 107 and ground is less than 4.1V).
2. Pattern 2: When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted. In this case, the time required for diagnosis may be extended.
3. Pattern 3: Operate vehicle following the driving pattern shown in the figure. (Scheme 622) Release the accelerator pedal during decelerating vehicle speed from 90 km/h (56 MPH) to 0 km/h (0 MPH).
4. Pattern 4: The accelerator pedal must be held very steady during steady-state driving. If the accelerator pedal is moved, the test must be conducted all over again.

*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH) again.

*2: Checking the vehicle speed with GST is advised.

Suggested Transmission Gear Position

Set the selector lever in the D position.

With CONSULT-II

The emission related diagnostic information in the ECM can be erased by selecting "ERASE" in the "SELF-DIAG RESULTS" mode with CONSULT-II.

If DTCs are displayed for both ECM and TCM (Transmission Control Module), they need to be erased individually from the ECM and TCM (Transmission Control Module).

Note. If the DTC is not for A/T related items (see INDEX FOR DTC ), skip steps 2 through 4.

Scheme 623

1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10 seconds and then turn it ON (engine stopped) again.
2. Turn CONSULT-II ON and touch "A/T".
3. Touch "SELF-DIAG RESULTS".
4. Touch "ERASE". [The DTC in the TCM (Transmission Control Module) will be erased.] Then touch "BACK" twice.
5. Touch "ENGINE".
6. Touch "SELF-DIAG RESULTS".
7. Touch "ERASE". (The DTC in the ECM will be erased.)

With GST

The emission related diagnostic information in the ECM can be erased by selecting MODE 4 with GST.

Note. If the DTC is not for A/T related items (see INDEX FOR DTC ), skip step 2.

1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10 seconds and then turn it ON (engine stopped) again.
2. Perform «HOW TO ERASE DTC (WITH GST)»(ref-169880-S25402584972004121700000) in AUTOMATIC TRANSMISSION - TITAN article in AUTOMATIC TRANSMISSION. (The DTC in the TCM will be erased.).
3. Select MODE 4 with GST. (The DTC in the ECM will be erased.)

No Tools

Note. If the DTC is not for A/T related items (see INDEX FOR DTC ), skip step 3.

1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once.
2. Wait at least 10 seconds and then turn it ON (engine stopped) again.
3. Perform «HOW TO ERASE DTC (NO TOOLS)»(ref-169880-S23997701362004121700000) in AUTOMATIC TRANSMISSION - TITAN article in AUTOMATIC TRANSMISSION. (The DTC in the TCM will be erased.)
4. Change the diagnostic test mode from Mode II to Mode I by depressing the accelerator pedal. Refer to «HOW TO SWITCH DIAGNOSTIC TEST MODE»(ref-169472-S16436346722004120900000) .

1. If the battery is disconnected, the emission-related diagnostic information will be lost within 24 hours.
2. The following data are cleared when the ECM memory is erased. Diagnostic trouble codes 1st trip diagnostic trouble codes Freeze frame data 1st trip freeze frame data System readiness test (SRT) codes Test values Others

Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all of the data listed above, are cleared from the ECM memory during work procedures.

Scheme 624

1. If the security indicator lights up with the ignition switch in the ON position or "NATS MALFUNCTION" is displayed on "SELF-DIAG RESULTS" screen, perform self-diagnostic results mode with CONSULT-II using NATS program card. Refer to «NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM - NATS)»(ref-170166-S09700127722005010500000) in POWER LOCKS, REMOTE KEYLESS ENTRY & ANTI-THEFT SYSTEMS - TITAN article in ACCESSORIES & BODY, CAB.
2. Confirm no self-diagnostic results of NVIS (NATS) is displayed before touching "ERASE" in "SELF-DIAG RESULTS" mode with CONSULT-II.
3. When replacing ECM, initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs must be carried out with CONSULT-II using NATS program card. Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of NVIS (NATS) initialization and NVIS (NATS) ignition key ID registration, refer to CONSULT-II operation manual, IVIS/NVIS.

< Driving Pattern B >

Driving pattern B means the vehicle operation as follows

All components and systems should be monitored at least once by the OBD system.

1. The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.
2. The B counter will be counted up when driving pattern B is satisfied without any malfunction.
3. The MIL will go off when the B counter reaches 3. (*2 in OBD SYSTEM OPERATION CHART). (Scheme 625)

< Driving Pattern C >

Driving pattern C means the vehicle operation as follows

The following conditions should be satisfied at the same time

Engine speed: (Engine speed in the freeze frame data) +/-375 RPM

Calculated load value: (Calculated load value in the freeze frame data) x (1+/-0.1) [%]

Engine coolant temperature (T) condition

1. When the freeze frame data shows lower than 70°C (158°F), T should be lower than 70°C (158°F).
2. When the freeze frame data shows higher than or equal to 70°C (158°F), T should be higher than or equal to 70°C (158°F).

Example

If the stored freeze frame data is as follows

Engine speed: 850 RPM, Calculated load value: 30%, Engine coolant temperature: 80°C (176°F)

To be satisfied with driving pattern C, the vehicle should run under the following conditions

Engine speed: 475 - 1,225 RPM, Calculated load value: 27 - 33%, Engine coolant temperature: more than 70°C (158°F)

1. The C counter will be cleared when the malfunction is detected regardless of vehicle conditions above.
2. The C counter will be counted up when vehicle conditions above is satisfied without the same malfunction.
3. The DTC will not be displayed after C counter reaches 80.
4. The 1st trip DTC will be cleared when C counter is counted once without the same malfunction after DTC is stored in ECM.

Scheme 625

Scheme 626

1. The A counter will be cleared when the malfunction is detected regardless of (1) - (4).
2. The A counter will be counted up when (1) - (4) are satisfied without the same malfunction.
3. The DTC will not be displayed after the A counter reaches 40.

Driving pattern B means the vehicle operation as follows

All components and systems should be monitored at least once by the OBD system.

1. The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.
2. The B counter will be counted up when driving pattern B is satisfied without any malfunctions.
3. The MIL will go off when the B counter reaches 3 (*2 in OBD SYSTEM OPERATION CHART). (Scheme 625)

FAIL-SAFE CHART

When the DTC listed below is detected, the ECM enters fail-safe mode and the MIL lights up.

Scheme 627

Scheme 628

1. When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting MIL up when there is malfunction on engine control system. Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means of operating fail-safe function. The fail-safe function also operates when above diagnoses except MIL circuit are detected, and demands the driver to repair the malfunction. During fail-safe function, engine speed will not exceed 2500 RPM, due to fuel cut.

Scheme 629

Scheme 630

1. INSPECTION START Check service records for any recent repairs that may indicate a related malfunction, or a current need for scheduled maintenance. Open engine hood and check the following: Harness connectors for improper connections Wiring harness for improper connections, pinches and cut Vacuum hoses for splits, kinks and improper connections Hoses and ducts for leaks Air cleaner clogging Gasket Confirm that electrical or mechanical loads are not applied. Head lamp switch is OFF. Air conditioner switch is OFF. Rear window defogger switch is OFF. Steering wheel is in the straight-ahead position, etc. Start engine and warm it up until engine coolant temperature indicator points the middle of gauge. Ensure engine stays below 1,000 RPM. Run engine at about 2,000 RPM for about 2 minutes under no load. Make sure that no DTC is displayed with CONSULT-II or GST. OK or NG OK: GO TO 3. NG: GO TO 2.
2. REPAIR OR REPLACE Repair or replace components as necessary according to corresponding Diagnostic Procedure.: GO TO 3.
3. CHECK TARGET IDLE SPEED With CONSULT-II Run engine at about 2,000 RPM for about 2 minutes under no load. Rev engine (2,000 to 3,000 RPM) two or three times under no load, then run engine at idle speed for about 1 minute. Read idle speed in "DATA MONITOR" mode with CONSULT-II. 650 +/- 50 RPM (in P or N position) Without CONSULT-II Run engine at about 2,000 RPM for about 2 minutes under no load. Rev engine (2,000 to 3,000 RPM) two or three times under no load, then run engine at idle speed for about 1 minute. Check idle speed. 650 +/- 50 RPM (in P or N position) OK or NG OK: GO TO 9. NG: GO TO 4.
4. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING Stop engine. Perform «ACCELERATOR PEDAL RELEASED POSITION LEARNING»(ref-169712-S24333390702004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article.: GO TO 5.
5. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING Perform «THROTTLE VALVE CLOSED POSITION LEARNING»(ref-169712-S39661707712004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article.: GO TO 6.
6. PERFORM IDLE AIR VOLUME LEARNING Refer to «IDLE AIR VOLUME LEARNING»(ref-169712-S09460714722004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. Is Idle Air Volume Learning carried out successfully? Yes or No Yes: GO TO 7. No: Follow the instruction of Idle Air Volume Learning. GO TO 4.
7. CHECK TARGET IDLE SPEED AGAIN With CONSULT-II Start engine and warm it up to normal operating temperature. Read idle speed in "DATA MONITOR" mode with CONSULT-II. 650 +/- 50 RPM (in P or N position) Without CONSULT-II Start engine and warm it up to normal operating temperature. Check idle speed. 650 +/- 50 RPM (in P or N position) OK or NG OK: GO TO 10. NG: GO TO 8.
8. DETECT MALFUNCTIONING PART Check the following. Check camshaft position sensor (PHASE) and circuit. Refer to «DTC P0340 CAMSHAFT POSITION (CMP) SENSOR (PHASE)»(ref-169472-S02224145662004120900000). Check crankshaft position sensor (POS) and circuit. Refer to «DTC P0335 CKP SENSOR (POS)»(ref-169472-S25509677022004120900000). OK or NG OK: GO TO 9. NG: Repair or replace. GO TO 4.
9. CHECK ECM FUNCTION Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.) Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to «NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM - NATS)»(ref-170166-S09700127722005010500000) in POWER LOCKS, REMOTE KEYLESS ENTRY & ANTI-THEFT SYSTEMS - TITAN article in ACCESSORIES & BODY, CAB.: GO TO 4.
10. CHECK IGNITION TIMING Run engine at idle. Check ignition timing with a timing light. 15 +/- 5° BTDC (in P or N position) OK or NG OK: INSPECTION END NG: GO TO 11.
11. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING Stop engine. Perform «ACCELERATOR PEDAL RELEASED POSITION LEARNING»(ref-169712-S24333390702004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article.: GO TO 12.
12. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING Perform «THROTTLE VALVE CLOSED POSITION LEARNING»(ref-169712-S39661707712004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article.: GO TO 13.
13. PERFORM IDLE AIR VOLUME LEARNING Refer to «IDLE AIR VOLUME LEARNING»(ref-169712-S09460714722004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. Is Idle Air Volume Learning carried out successfully? Yes or No Yes: GO TO 14. No: Follow the instruction of Idle Air Volume Learning. GO TO 4.
14. CHECK TARGET IDLE SPEED AGAIN With CONSULT-II Start engine and warm it up to normal operating temperature. Read idle speed in "DATA MONITOR" mode with CONSULT-II. 650 +/- 50 RPM (in P or N position) Without CONSULT-II Start engine and warm it up to normal operating temperature. Check idle speed. 650 +/- 50 RPM (in P or N position) OK or NG OK: GO TO 15. NG: GO TO 17.
15. CHECK IGNITION TIMING AGAIN Run engine at idle. Check ignition timing with a timing light. 15 +/- 5° BTDC (in P or N position). (Scheme 630) OK or NG OK: INSPECTION END NG: GO TO 16.
16. CHECK TIMING CHAIN INSTALLATION Check timing chain installation. Refer to «TIMING CHAIN»(ref-163594-S02748399582004120700000). OK or NG OK: GO TO 17. NG: Repair the timing chain installation. GO TO 4.
17. DETECT MALFUNCTIONING PART Check the following. Check camshaft position sensor (PHASE) and circuit. Refer to «DTC P0340 CAMSHAFT POSITION (CMP) SENSOR (PHASE)»(ref-169472-S02224145662004120900000) Check crankshaft position sensor (POS) and circuit. Refer to «DTC P0335 CKP SENSOR (POS)»(ref-169472-S25509677022004120900000). OK or NG OK: GO TO 18. NG: Repair or replace. GO TO 4.
18. CHECK ECM FUNCTION Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.) Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to «NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM - NATS)»(ref-170166-S09700127722005010500000) in POWER LOCKS, REMOTE KEYLESS ENTRY & ANTI-THEFT SYSTEMS - TITAN article in ACCESSORIES & BODY, CAB.: GO TO 4.

Scheme 631

Scheme 632

Scheme 633

Scheme 634

Scheme 635

Scheme 636

Scheme 637

Scheme 638

Scheme 639

Scheme 640

Scheme 641

SRT STATUS Mode

For details, refer to SYSTEM READINESS TEST (SRT) CODE .

SRT Work Support Mode

This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.

Scheme 642

CONSULT-II REFERENCE VALUE IN DATA MONITOR

Remarks

1. Specification data are reference values.
2. Specification data are output/input values which are detected or supplied by the ECM at the connector.

* Specification data may not be directly related to their components signals/values/operations.

i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM according to the signals input from the camshaft position sensor and other ignition timing related sensors.

Scheme 643

Scheme 644

Scheme 645

MAJOR SENSOR REFERENCE GRAPH IN DATA MONITOR MODE

The following are the major sensor reference graphs in "DATA MONITOR" mode.

CLSD THL POS, ACCEL SEN 1, THRTL SEN 1

Below is the data for "CLSD THL POS", "ACCEL SEN 1" and "THRTL SEN 1" when depressing the accelerator pedal with the ignition switch ON and with selector lever in D position.

The signal of "ACCEL SEN 1" and "THRTL SEN 1" should rise gradually without any intermittent drop or rise after "CLSD THL POS" is changed from "ON" to "OFF".

Scheme 646

ENG SPEED, MAS A/F SE-B1, THRTL SEN 1, HO2S2 (B1), INJ PULSE-B1

Below is the data for "ENG SPEED", "MAS A/F SE-B1", "THRTL SEN 1", "HO2S2 (B1)", and "INJ PULSE-B1" when revving engine quickly up to 4,800 RPM under no load after warming up engine sufficiently. Each value is for reference, the exact value may vary.

Scheme 647

Scheme 648

CONSULT-II Reference Value in Data Monitor Mode

Specification data are reference values.

Scheme 649

Scheme 650

BANK 2

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 651

Specification data are reference values and are measured between each terminal and ground.

Scheme 652

Scheme 653

Scheme 654

Scheme 655

1. CHECK HO2S2 POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect heated oxygen sensor 2 harness connector. Turn ignition switch ON. Check voltage between HO2S2 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK: GO TO 3. NG: GO TO 2.
2. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 IPDM E/R connector E119 10A fuse Harness for open or short between heated oxygen sensor 2 and fuse Repair harness or connectors.
3. CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S38021269392004120900000) . Continuity should exist. Also check harness for short to ground and 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.
4. CHECK HEATED OXYGEN SENSOR 2 HEATER Refer to «COMPONENT INSPECTION»(ref-169472-S07482027172004120900000) . OK or NG OK: GO TO 5. NG: Replace malfunctioning heated oxygen sensor 2.
5. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

Scheme 656

Scheme 657

1. Check resistance between HO2S2 terminals as follows.
2. If NG, replace heated oxygen sensor 2.

Heated Oxygen Sensor 2

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 658

Perform Procedure For Malfunction A First.

If the DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B.

Note. If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

Procedure For Malfunction A

Note. If engine will not start or stops soon, wait at least 10 seconds with engine stopped (Ignition switch ON) instead of running engine at idle speed.

With CONSULT-II

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and warm it up to normal operating temperature.
4. Run engine for at least 10 seconds at idle speed.
5. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25137015152004120900000) .

Scheme 659

With GST

Follow the procedure "With CONSULT-II" above.

Procedure For Malfunction B

With CONSULT-II

Scheme 660

Scheme 661

Scheme 662

1. Turn ignition switch ON.
2. Start engine and warm it up to normal operating temperature. If engine cannot be started, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25137015152004120900000)
3. Select "DATA MONITOR" mode with CONSULT-II.
4. Check the voltage of "MAS A/F SE-B1" with "DATA MONITOR".
5. Increases engine speed to about 4,000 RPM.
6. Monitor the linear voltage rise in response to engine speed increases. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25137015152004120900000) . If OK, go to following step.
7. Maintain the following conditions for at least 10 consecutive seconds.
8. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25137015152004120900000) .

Use this procedure to check the overall function of the mass air flow sensor circuit. During this check, a DTC might not be confirmed.

With GST

1. Start engine and warm it up to normal operating temperature.
2. Select MODE 1 with GST.
3. Check the mass air flow sensor signal with MODE 1.
4. Check for linear mass air flow sensor signal value rise in response to increases to about 4,000 RPM in engine speed.
5. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25137015152004120900000) .

Scheme 663

Mass Air Flow Sensor

Refer to AIR CLEANER AND AIR DUCT .

Specification data are reference values.

Scheme 664

Scheme 665

Fail-Safe Mode

When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up.

Scheme 666

Refer to AIR CLEANER AND AIR DUCT in ENGINE MECHANICAL - TITAN - 5.6L article.

Refer to AIR CLEANER AND AIR DUCT in ENGINE MECHANICAL - TITAN - 5.6L article.

Engine Coolant Temperature Sensor

Refer to CYLINDER HEAD in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 667

Electric Throttle Control Actuator

Refer to INTAKE MANIFOLD in ENGINE MECHANICAL - TITAN - 5.6L article.

Refer to THERMOSTAT AND WATER PIPING in ENGINE COOLING SYSTEM - TITAN article.

Refer to AIR CLEANER AND AIR DUCT in ENGINE MECHANICAL - TITAN - 5.6L article.

Check resistance as shown in the figure.

Scheme 668

Scheme 669

If NG, replace engine coolant temperature sensor.

Scheme 670

Refer to THERMOSTAT AND WATER PIPING in ENGINE COOLING SYSTEM - TITAN article.

Specification data are reference values.

Scheme 671

BANK 1

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 672

Specification data are reference values and are measured between each terminal and ground.

Scheme 673

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 674

Specification data are reference values and are measured between each terminal and ground.

Scheme 675

Scheme 676

Scheme 677

Scheme 678

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT Disconnect heated oxygen sensor 2 harness connector. Check harness continuity between HO2S2 terminal 4 and body ground. Refer to «WIRING DIAGRAM»(ref-169472-S23705484532004120900000) . Continuity should exist. Also check harness for short to power. OK or NG OK: GO TO 4. NG: GO TO 3.
3. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 Harness for open or short between heated oxygen sensor 2 and body ground Repair open circuit or short to power in harness or connectors.
4. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Disconnect ECM harness connector. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S23705484532004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S23705484532004120900000) . Continuity should not exist. Also check harness for short to ground and short to power. OK or NG OK: GO TO 5. NG: Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK HO2S2 CONNECTOR FOR WATER Turn ignition switch OFF. Disconnect heated oxygen sensor 2 harness connector. Check connectors for water. Water should not exist. OK or NG OK: GO TO 6. NG: Repair or replace harness or connectors.
6. CHECK HEATED OXYGEN SENSOR 2 Refer to «COMPONENT INSPECTION»(ref-169472-S35311924672004120900000) . OK or NG OK: GO TO 7. NG: Replace malfunctioning heated oxygen sensor 2.
7. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

With CONSULT-II

Scheme 679

Scheme 680

Scheme 681

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
2. Start engine and warm it up to the normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and 4,000 RPM for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Select "FUEL INJECTION" in "ACTIVE TEST" mode, and select "HO2S2 (B1)/(B2)" as the monitor item with CONSULT-II.
7. Check "HO2S2 (B1)/(B2)" at idle speed when adjusting "FUEL INJECTION" to +/-25%. "HO2S2 (B1)/(B2)" should be above 0.70V at least once when the "FUEL INJECTION" is +25%. "HO2S2 (B1)/(B2)" should be below 0.18V at least once when the "FUEL INJECTION" is -25%.

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 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 55 [HO2S2 (B1) signal] or 74 [HO2S2 (B2) 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 0.70V at least once during this procedure. If the voltage is above 0.70V at step 6, step 7 is not necessary.
7. Keep vehicle at idling for 10 minutes, then check voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position. The voltage should be below 0.18V at least once during this procedure.
8. If NG, replace heated oxygen sensor 2.

Scheme 682

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 683

Overall Function Check

Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st trip DTC might not be confirmed.

With GST

Scheme 684

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 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 55 [HO2S2 (B1) signal] or 74 [HO2S2 (B2) 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.) A change of voltage should be more than 0.06V for 1 second during this procedure. If the voltage can be confirmed in step 6, step 7 is not necessary.
7. Keep vehicle at idling for 10 minutes, then check the voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position. A change of voltage should be more than 0.06V for 1 second during this procedure.
8. If NG, go to «Diagnostic Procedure»(ref-169472-S04885145502004120900000) .

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 685

Specification data are reference values and are measured between each terminal and ground.

Scheme 686

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 687

Specification data are reference values and are measured between each terminal and ground.

Scheme 688

Scheme 689

Scheme 690

Scheme 691

Scheme 692

Scheme 693

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. CLEAR THE SELF-LEARNING DATA With CONSULT-II Start engine and warm it up to normal operating temperature. Select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-II. Clear the self-learning control coefficient by touching "CLEAR". Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? Is it difficult to start engine? Without CONSULT-II Start engine and warm it up to normal operating temperature. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector, and restart and run engine for at least 5 seconds at idle speed. Stop engine and reconnect mass air flow sensor harness connector. Make sure DTC P0102 is displayed. Erase the DTC memory. Refer to «HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION»(ref-169472-S16933045562004120900000) . Make sure DTC P0000 is displayed. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? Is it difficult to start engine? Yes or No Yes: Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to «DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION»(ref-169472-S31237275982004120900000) or «DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION»(ref-169472-S11533700932004120900000) . No: GO TO 3.
3. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect heated oxygen sensor 2 harness connector. Check harness continuity between HO2S2 terminal 4 and body ground. Refer to «WIRING DIAGRAM»(ref-169472-S24596741982004120900000) . Continuity should exist. Also check harness for short to power. OK or NG OK: GO TO 5. NG: GO TO 4.
4. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 Harness for open or short between heated oxygen sensor 2 and body ground Repair open circuit or short to power in harness or connectors.
5. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Disconnect ECM harness connector. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S24596741982004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S24596741982004120900000) . Continuity should not exist. Also check harness for short to ground and short to power. OK or NG OK: GO TO 6. NG: Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK HEATED OXYGEN SENSOR 2 Refer to «COMPONENT INSPECTION»(ref-169472-S38402781142004120900000) . OK or NG OK: GO TO 7. NG: Replace malfunctioning heated oxygen sensor 2.
7. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

With CONSULT-II

Scheme 694

Scheme 695

Scheme 696

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
2. Start engine and warm it up to the normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and 4,000 RPM for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Select "FUEL INJECTION" in "ACTIVE TEST" mode, and select "HO2S2 (B1)/(B2)" as the monitor item with CONSULT-II.
7. Check "HO2S2 (B1)/(B2)" at idle speed when adjusting "FUEL INJECTION" to +/-25%. "HO2S2 (B1)/(B2)" should be above 0.70V at least once when the "FUEL INJECTION" is +25%. "HO2S2 (B1)/(B2)" should be below 018V at least once when the "FUEL INJECTION" is -25%.

Without CONSULT-II

Scheme 697

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 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 55 [HO2S2 (B1) signal] or 74 [HO2S2 (B2) 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 0.70V at least once during this procedure. If the voltage is above 0.70V at step 6, step 7 is not necessary.
7. Keep vehicle at idling for 10 minutes, then check voltage or check the voltage when coasting from 80 km/h (50 MPH) in D position. The voltage should be below 0.18V at least once during this procedure.
8. If NG, replace heated oxygen sensor 2.

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 698

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 699

Scheme 700

Scheme 701

Scheme 702

Scheme 703

Scheme 704

Scheme 705

Scheme 706

1. CHECK EXHAUST GAS LEAK Start engine and run it at idle. Listen for an exhaust gas leak before three way catalyst (manifold). OK or NG OK: GO TO 2. NG: Repair or replace.
2. CHECK FOR INTAKE AIR LEAK Listen for an intake air leak after the mass air flow sensor. Check PCV hose connection. OK or NG OK: GO TO 3. NG: Repair or replace.
3. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect corresponding A/F sensor 1 harness connector. Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to «WIRING DIAGRAM»(ref-169472-S28782010082004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S28782010082004120900000) . Continuity should not exist. 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.
4. CHECK FUEL PRESSURE Release fuel pressure to zero. Refer to «FUEL PRESSURE RELEASE»(ref-169712-S33627982672004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. Install fuel pressure gauge and check fuel pressure. Refer to «FUEL PRESSURE CHECK»(ref-169712-S13591038672004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. At idling: 350 kPa (3.57 kg/cm 2 , 51 psi) OK or NG OK: GO TO 6. NG: GO TO 5.
5. DETECT MALFUNCTIONING PART Check the following. Fuel pump and circuit (Refer to «FUEL PUMP CIRCUIT»(ref-169809-S06692764202004121600000) ) in SYSTEM & COMPONENT TESTING - TITAN article. Fuel pressure regulator. Refer to «FUEL PRESSURE CHECK»(ref-169712-S13591038672004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. Fuel lines Fuel filter for clogging Repair or replace.
6. CHECK MASS AIR FLOW SENSOR With CONSULT-II Install all removed parts. Check "MASS AIR FLOW" in "DATA MONITOR" mode with CONSULT-II. 3.0 - 9.0 g.m/sec: at idling 9.0 - 28.0 g.m/sec: at 2,500 RPM With GST Install all removed parts. Check mass air flow sensor signal in MODE 1 with GST. 3.0 - 9.0 g.m/sec: at idling 9.0 - 28.0 g.m/sec: at 2,500 RPM OK or NG OK: GO TO 7. NG: Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or engine grounds. Refer to «DTC P0101 MAF SENSOR»(ref-169472-S11251271602004120900000) .
7. CHECK FUNCTION OF INJECTORS With CONSULT-II Start engine. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-II. Make sure that each circuit produces a momentary engine speed drop. Without CONSULT-II Start engine. Listen to each injector operating sound. Clicking noise should be heard. OK or NG OK: GO TO 8. NG: Perform trouble diagnosis for «INJECTOR CIRCUIT»(ref-169809-S02167552732004121600000) in SYSTEM & COMPONENT TESTING - TITAN article.
8. CHECK INJECTOR Confirm that the engine is cooled down and there are no fire hazards near the vehicle. Turn ignition switch OFF. Disconnect all injector harness connectors. Remove injector gallery assembly. Refer to «FUEL INJECTOR AND FUEL TUBE»(ref-163594-S08204080392004120700000) in ENGINE MECHANICAL - TITAN - 5.6L article. Keep fuel hose and all injectors connected to injector gallery. For DTC P0171, reconnect injector harness connectors on bank 1. For DTC P0174, reconnect injector harness connectors on bank 2. Disconnect all ignition coil harness connectors. Prepare pans or saucers under each injector. Crank engine for about 3 seconds. For DTC P0171, make sure that fuel sprays out from injectors on bank 1. For DTC P0174, make sure that fuel sprays out from injectors on bank 2. Fuel should be sprayed evenly for each injector. OK or NG OK: GO TO 9. NG: Replace injectors from which fuel does not spray out. Always replace O-ring with NEW ones.
9. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 707

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 708

Scheme 709

Scheme 710

Scheme 711

Scheme 712

Scheme 713

Scheme 714

1. CHECK EXHAUST GAS LEAK Start engine and run it at idle. Listen for an exhaust gas leak before three way catalyst (manifold). OK or NG OK: GO TO 2. NG: Repair or replace.
2. CHECK FOR INTAKE AIR LEAK Listen for an intake air leak after the mass air flow sensor. OK or NG OK: GO TO 3. NG: Repair or replace.
3. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect corresponding A/F sensor 1 harness connector. Disconnect ECM harness connector. Check harness continuity between the following terminals. Refer to «WIRING DIAGRAM»(ref-169472-S22789637632004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S22789637632004120900000) . Continuity should not exist. 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.
4. CHECK FUEL PRESSURE Release fuel pressure to zero. Refer to «FUEL PRESSURE RELEASE»(ref-169712-S33627982672004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. Install fuel pressure gauge and check fuel pressure. Refer to «FUEL PRESSURE CHECK»(ref-169712-S13591038672004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. At idling: 350 kPa (3.57 kg/cm 2 , 51 psi) OK or NG OK: GO TO 6. NG: GO TO 5.
5. DETECT MALFUNCTIONING PART Check the following. Fuel pump and circuit (Refer to «FUEL PUMP CIRCUIT»(ref-169809-S06692764202004121600000) ) in SYSTEM & COMPONENT TESTING - TITAN article. Fuel pressure regulator. Refer to «FUEL PRESSURE CHECK»(ref-169712-S13591038672004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. Repair or replace.
6. CHECK MASS AIR FLOW SENSOR With CONSULT-II Install all removed parts. Check "MASS AIR FLOW" in "DATA MONITOR" mode with CONSULT-II. 3.0 - 9.0 g.m/sec: at idling 9.0 - 28.0 g.m/sec: at 2,500 RPM With GST Install all removed parts. Check mass air flow sensor signal in MODE 1 with GST. 3.0 - 9.0 g.m/sec: at idling 9.0 - 28.0 g.m/sec: at 2,500 RPM OK or NG OK: GO TO 7. NG: Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or engine grounds. Refer to «DTC P0101 MAF SENSOR»(ref-169472-S11251271602004120900000) .
7. CHECK FUNCTION OF INJECTORS With CONSULT-II Start engine. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-II. Make sure that each circuit produces a momentary engine speed drop. Without CONSULT-II Start engine. Listen to each injector operating sound. Clicking noise should be heard. OK or NG OK: GO TO 8. NG: Perform trouble diagnosis for «INJECTOR CIRCUIT»(ref-169809-S02167552732004121600000) in SYSTEM & COMPONENT TESTING - TITAN article.
8. CHECK INJECTOR Remove injector assembly. Refer to «FUEL INJECTOR AND FUEL TUBE»(ref-163594-S08204080392004120700000) in ENGINE MECHANICAL - TITAN - 5.6L article. Keep fuel hose and all injectors connected to injector gallery. Confirm that the engine is cooled down and there are no fire hazards near the vehicle. Disconnect all injector harness connectors. Disconnect all ignition coil harness connectors. Prepare pans or saucers under each injectors. Crank engine for about 3 seconds. Make sure fuel does not drip from injector. OK or NG OK (Does not drip.): GO TO 9. NG (Drips.): Replace the injectors from which fuel is dripping. Always replace O-ring with NEW one.
9. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

Fuel Tank Temperature Sensor

Refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY in FUEL SYSTEM - TITAN article.

Refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY in FUEL SYSTEM - TITAN article.

Specification data are reference values.

Scheme 715

Refer to INTAKE MANIFOLD in ENGINE MECHANICAL - TITAN - 5.6L article.

Knock Sensor

Check resistance between knock sensor terminal 1 and ground.

Note. It is necessary to use an ohmmeter which can measure more than 10 M/ohms.

1. Resistance: Approximately 532 - 588 k/ohms [at 20°C (68°F)]

Scheme 716

Refer to CYLINDER BLOCK in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 717

Scheme 718

Crankshaft Position Sensor (POS)

Refer to TRANSMISSION ASSEMBLY REMOVAL procedure for Crankshaft Position Sensor (POS) removal and installation. .

Scheme 719

Camshaft Position Sensor (PHASE)

Refer to CAMSHAFT in ENGINE MECHANICAL - TITAN - 5.6L article.

Use this procedure to check the overall function of the three way catalyst (manifold). During this check, a 1st trip DTC might not be confirmed.

WITH GST

Scheme 720

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 between 3,500 and 4,000 RPM for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Open engine hood.
6. Set voltmeter probe between ECM terminals ECM terminals 74 [HO2S2 (bank 1) signal], 55 [HO2S2 (bank 2) signal] and ground.
7. Keep engine speed at 2,500 RPM constant under no load.
8. Make sure that the voltage does not vary for more than 5 seconds. If the voltage fluctuation cycle takes less than 5 seconds, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S40465481952004120900000) . 1 cycle: 0.6 - 1.0 --> 0 - 0.3 --> 0.6 - 1.0

Scheme 721

Scheme 722

Scheme 723

Scheme 724

1. CHECK EXHAUST SYSTEM Visually check exhaust tubes and muffler for dent. OK or NG OK: GO TO 2. NG: Repair or replace.
2. CHECK EXHAUST GAS LEAK Start engine and run it at idle. Listen for an exhaust gas leak before the three way catalyst (manifold). OK or NG OK: GO TO 3. NG: Repair or replace.
3. CHECK INTAKE AIR LEAK Listen for an intake air leak after the mass air flow sensor. OK or NG OK: GO TO 4. NG: Repair or replace.
4. CHECK IGNITION TIMING Check the following items. Refer to «BASIC INSPECTION»(ref-169472-S09551101142004120900000) . OK or NG OK: GO TO 5. NG: Follow the «BASIC INSPECTION»(ref-169472-S09551101142004120900000) .
5. CHECK INJECTORS Stop engine and then turn ignition switch ON. Check voltage between ECM terminals 21, 22, 23, 40, 41, 42, 44, 63 and ground with CONSULT-II or tester. Refer to «SYSTEM WIRING DIAGRAMS - TITAN»(ref-166656) article. Battery voltage should exist. OK or NG OK: GO TO 6. NG: Perform «INJECTOR CIRCUIT»(ref-169809-S02167552732004121600000) in SYSTEM & COMPONENT TESTING - TITAN article.
6. CHECK IGNITION SPARK Turn ignition switch OFF. Disconnect ignition coil assembly from rocker cover. Connect a known-good spark plug to the ignition coil assembly. Disconnect all injector harness connectors. Place end of spark plug against a suitable ground and crank engine. Check for spark. OK or NG OK: GO TO 7. NG: Check ignition coil with power transistor and their circuit. Refer to «IGNITION SIGNAL»(ref-169809-S09326610482004121600000) in SYSTEM & COMPONENT TESTING - TITAN article.
7. CHECK INJECTOR Turn ignition switch OFF. Remove injector assembly. Refer to «FUEL INJECTOR AND FUEL TUBE»(ref-163594-S08204080392004120700000) in ENGINE MECHANICAL - TITAN - 5.6L article. Keep fuel hose and all injectors connected to injector gallery. Disconnect all ignition coil harness connectors. Reconnect injector harness connector. Turn ignition switch ON. Make sure fuel does not drip from injector. OK or NG OK (Does not drip.): GO TO 8. NG (Drips.): Replace the injector(s) from which fuel is dripping.
8. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . Trouble is fixed.: INSPECTION END Trouble is not fixed.: Replace three way catalyst assembly.

Use this procedure to check the overall monitoring function of the EVAP control system purge flow monitoring. During this check, a 1st trip DTC might not be confirmed.

WITH GST

Scheme 725

Scheme 726

1. Lift up drive wheels.
2. Start engine (VDC switch OFF) and warm it up to normal operating temperature.
3. Turn ignition switch OFF, wait at least 10 seconds.
4. Start engine and wait at least 70 seconds.
5. Set voltmeter probes to ECM terminals 32 (EVAP control system pressure sensor signal) and ground.
6. Check EVAP control system pressure sensor value at idle speed and note it.
7. Establish and maintain the following conditions for at least 1 minute.
8. Verify that EVAP control system pressure sensor value stays 0.1V less than the value at idle speed (measured at step 6 ) for at least 1 second.
9. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25118166282004120900000) .

Scheme 727

Scheme 728

Scheme 729

Scheme 730

1. CHECK EVAP CANISTER Turn ignition switch OFF. Check EVAP canister for cracks. OK or NG OK (With CONSULT-II): GO TO 2. OK (Without CONSULT-II): GO TO 3. NG: Replace EVAP canister.
2. CHECK PURGE FLOW With CONSULT-II Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP service port and install vacuum gauge. For the location of EVAP service port, refer to «EVAPORATIVE EMISSION LINE DRAWING»(ref-169809-S38786464232004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. Start engine and let it idle. Select "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-II. Rev engine up to 2,000 RPM. Touch "Qd" and "Qu" on CONSULT-II screen to adjust "PURG VOL CONT/V" opening and check vacuum existence. OK or NG OK: GO TO 7. NG: GO TO 4.
3. CHECK PURGE FLOW Without CONSULT-II Start engine and warm it up to normal operating temperature. Stop engine. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP service port and install vacuum gauge. For the location of EVAP service port, refer to «EVAPORATIVE EMISSION LINE DRAWING»(ref-169809-S38786464232004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. Start engine and let it idle. Do not depress accelerator pedal even slightly. Check vacuum gauge indication before 60 seconds passed after starting engine. Vacuum should not exist. Revving engine up to 2,000 RPM after 100 seconds passed after starting engine. Vacuum should exist. OK or NG OK: GO TO 7. NG: GO TO 4.
4. CHECK EVAP PURGE LINE Turn ignition switch OFF. Check EVAP purge line for improper connection or disconnection. For the location of EVAP service port, refer to «EVAPORATIVE EMISSION LINE DRAWING»(ref-169809-S38786464232004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. OK or NG OK: GO TO 5. NG: Repair it.
5. CHECK EVAP PURGE HOSE AND PURGE PORT Disconnect purge hoses connected to EVAP service port A and EVAP canister purge volume control solenoid valve B . Blow air into each hose and EVAP purge port C . Check that air flows freely. OK or NG OK (With CONSULT-II): GO TO 6. OK (Without CONSULT-II): GO TO 7. NG: Repair or clean hoses and/or purge port.
6. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE With CONSULT-II Start engine. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-II. Check that engine speed varies according to the valve opening. OK or NG OK: GO TO 8. NG: GO TO 7.
7. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Refer to «COMPONENT INSPECTION»(ref-169472-S26890278992004120900000) . OK or NG OK: GO TO 8. NG: Replace EVAP canister purge volume control solenoid valve.
8. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR Disconnect EVAP control system pressure sensor harness connector. Check connectors for water. Water should not exist. OK or NG OK: GO TO 9. NG: Replace EVAP control system pressure sensor.
9. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION Refer to DTC P0452 «DTC Confirmation Procedure»(ref-169472-S27082151762004120900000) and P0453 «DTC Confirmation Procedure»(ref-169472-S10229786892004120900000) . OK or NG OK: GO TO 10. NG: Replace EVAP control system pressure sensor.
10. CHECK RUBBER TUBE FOR CLOGGING Disconnect rubber tube connected to EVAP canister vent control valve. Check the rubber tube for clogging. OK or NG OK: GO TO 11. NG: Clean the rubber tube using an air blower.
11. CHECK EVAP CANISTER VENT CONTROL VALVE Refer to «COMPONENT INSPECTION»(ref-169472-S25888519002004120900000) . OK or NG OK: GO TO 12. NG: Replace EVAP canister vent control valve.
12. CHECK EVAP PURGE LINE Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks. For the location of EVAP service port, refer to «EVAPORATIVE EMISSION LINE DRAWING»(ref-169809-S38786464232004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. OK or NG OK: GO TO 13. NG: Replace it.
13. CLEAN EVAP PURGE LINE Clean EVAP purge line (pipe and rubber tube) using air blower. GO TO 14.
14. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

Specification data are reference values.

Scheme 731

Scheme 732

EVAP Canister Purge Volume Control Solenoid Valve

With CONSULT-II

Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.

Scheme 733

Scheme 734

Without CONSULT-II

Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.

Scheme 735

Scheme 736

Refer to INTAKE MANIFOLD in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 737

Scheme 738

EVAP Canister Vent Control Valve

With CONSULT-II

Scheme 739

Scheme 740

Scheme 741

1. Remove EVAP canister vent control valve from EVAP canister.
2. Check portion B of EVAP canister vent control valve for being rusted. If NG, replace EVAP canister vent control valve. If OK, go to next step.
3. Reconnect harness connectors disconnected.
4. Turn ignition switch ON.
5. Perform "VENT CONTROL/V" in "ACTIVE TEST" mode.
6. Check air passage continuity and operation delay time. Make sure NEW O-ring is installed properly. Operation takes less than 1 second. If NG, replace EVAP canister vent control valve. If OK, go to next step.
7. Clean the air passage (portion A to B ) of EVAP canister vent control valve using an air blower.
8. Perform step 6 again.

Without CONSULT-II

Scheme 742

Scheme 743

Scheme 744

1. Remove EVAP canister vent control valve from EVAP canister.
2. Check portion B of EVAP canister vent control valve for being rusted.
3. Check air passage continuity and operation delay time under the following conditions. Make sure NEW O-ring is installed properly. Operation takes less than 1 second. If NG, replace EVAP canister vent control valve. If OK, go to next step.
4. Clean the air passage (portion A to B ) of EVAP canister vent control valve using an air blower.
5. Perform step 3 again.

Specification data are reference values.

Scheme 745

Scheme 746

Specification data are reference values.

Scheme 747

Scheme 748

Specification data are reference values.

Scheme 749

Scheme 750

WITH GST

Use this procedure to check the overall function of the EVAP very small leak function. During this check, a 1st trip DTC might not be confirmed.

Scheme 751

Scheme 752

1. Attach the EVAP service port adapter securely to the EVAP service port.
2. Set the pressure pump and a hose.
3. Also set a vacuum gauge via 3-way connector and a hose.
4. Turn ignition switch ON.
5. Connect GST and select MODE 8.
6. Using mode 8 control the EVAP canister vent control valve (close).
7. Apply pressure and make sure the following conditions are satisfied. Pressure to be applied: 2.7 kPa (20 mmHg, 0.79 inHg) Time to be waited after the pressure drawn in to the EVAP system and the pressure to be dropped: 60 seconds and the pressure should not be dropped more than 0.4 kPa (3 mmHg, 0.12 inHg). If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S27100746522004120900000) . If OK, go to next step.
8. Disconnect GST.
9. Start engine and warm it up to normal operating temperature.
10. Turn ignition switch OFF and wait at least 10 seconds.
11. Restart engine and let it idle for 90 seconds.
12. Keep engine speed at 2,000 RPM for 30 seconds.
13. Turn ignition switch OFF.

Note. For more information, refer to GST instruction manual.

Scheme 753

Scheme 754

Scheme 755

Scheme 756

Scheme 757

Scheme 758

Scheme 759

Scheme 760

1. CHECK FUEL FILLER CAP DESIGN Turn ignition switch OFF. Check for genuine NISSAN fuel filler cap design. OK or NG OK: GO TO 2. NG: Replace with genuine NISSAN fuel filler cap.
2. CHECK FUEL FILLER CAP INSTALLATION Check that the cap is tightened properly by rotating the cap clockwise. OK or NG OK: GO TO 3. NG: Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. Retighten until ratcheting sound is heard.
3. CHECK FUEL FILLER CAP FUNCTION Check for air releasing sound while opening the fuel filler cap. OK or NG OK: GO TO 5. NG: GO TO 4.
4. CHECK FUEL TANK VACUUM RELIEF VALVE Refer to «FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL CAP)»(ref-169809-S39533438802004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. OK or NG OK: GO TO 5. NG: Replace fuel filler cap with a genuine one.
5. INSTALL THE PRESSURE PUMP To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port securely. For the location of EVAP service port, refer to «EVAPORATIVE EMISSION LINE DRAWING»(ref-169809-S38786464232004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. NOTE: Improper installation of the EVAP service port adapter to the EVAP service port may cause leaking. With CONSULT-II: GO TO 6. Without CONSULT-II: GO TO 7.
6. CHECK FOR EVAP LEAK With CONSULT-II Turn ignition switch ON. Select "EVAP SYSTEM CLOSE" of "WORK SUPPORT" mode with CONSULT-II. Touch "START" and apply pressure into the EVAP line until the pressure indicator reaches the middle of the bar graph. NOTE: Do not use compressed air or a high pressure pump. Do not exceed 4.12 kPa (0.042 kg/cm 2 , 0.6 psi) of pressure in the system. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details. Refer to «EVAPORATIVE EMISSION LINE DRAWING»(ref-169809-S38786464232004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. OK or NG OK: GO TO 8. NG: Repair or replace.
7. CHECK FOR EVAP LEAK Without CONSULT-II Turn ignition switch OFF. Apply 12 volts DC to EVAP canister vent control valve. The valve will close. (Continue to apply 12 volts until the end of test.) Pressurize the EVAP line using pressure pump with 1.3 to 2.7 kPa (10 to 20 mmHg, 0.39 to 0.79 inHg), then remove pump and EVAP service port adapter. NOTE: Do not use compressed air or a high pressure pump. Do not exceed 4.12 kPa (0.042 kg/cm 2 , 0.6 psi) of pressure in the system. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details. Refer to «EVAPORATIVE EMISSION LINE DRAWING»(ref-169809-S38786464232004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. OK or NG OK: GO TO 8. NG: Repair or replace.
8. CHECK EVAP CANISTER VENT CONTROL VALVE Check the following. EVAP canister vent control valve is installed properly. Refer to «EVAP CANISTER VENT CONTROL VALVE»(ref-169809-S19048398102004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. EVAP canister vent control valve. Refer to «COMPONENT INSPECTION»(ref-169472-S25888519002004120900000) OK or NG OK: GO TO 9. NG: Repair or replace EVAP canister vent control valve and O-ring.
9. CHECK IF EVAP CANISTER SATURATED WITH WATER Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. Does water drain from the EVAP canister? Yes or No Yes: GO TO 10. No (With CONSULT-II): GO TO 12. No (Without CONSULT-II): GO TO 13.
10. CHECK EVAP CANISTER Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached. The weight should be less than 2.2 kg (4.9 lb). OK or NG OK (With CONSULT-II): GO TO 12. OK (Without CONSULT-II): GO TO 13. NG GO TO 11.
11. DETECT MALFUNCTIONING PART Check the following. EVAP canister for damage EVAP hose between EVAP canister and vehicle frame for clogging or poor connection Repair hose or replace EVAP canister.
12. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION With CONSULT-II Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port. Start engine. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode. Touch "Qu" on CONSULT-II screen to increase "PURG VOL CONT/V" opening to 100%. Check vacuum hose for vacuum when revving engine up to 2,000 RPM. OK or NG OK: GO TO 15. NG: GO TO 14.
13. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION Without CONSULT-II Start engine and warm it up to normal operating temperature. Stop engine. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port. Start engine and let it idle for at least 80 seconds. Check vacuum hose for vacuum when revving engine up to 2,000 RPM. Vacuum should exist. OK or NG OK: GO TO 16. NG: GO TO 14.
14. CHECK VACUUM HOSE Check vacuum hoses for clogging or disconnection. Refer to «VACUUM HOSE DRAWING»(ref-169786-S37141926562004121500000) in THEORY & OPERATION - TITAN article. OK or NG OK: GO TO 15. NG: Repair or reconnect the hose.
15. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Refer to «COMPONENT INSPECTION»(ref-169472-S26890278992004120900000) OK or NG OK: GO TO 16. NG: Replace EVAP canister purge volume control solenoid valve.
16. CHECK FUEL TANK TEMPERATURE SENSOR Refer to «COMPONENT INSPECTION»(ref-169472-S33626149702004120900000) . OK or NG OK: GO TO 17. NG: Replace fuel level sensor unit.
17. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to «COMPONENT INSPECTION»(ref-169472-S32685634342004120900000) . OK or NG OK: GO TO 18. NG: Replace EVAP control system pressure sensor.
18. CHECK EVAP PURGE LINE Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection. Refer to «EVAPORATIVE EMISSION LINE DRAWING»(ref-169809-S38786464232004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. OK or NG OK: GO TO 19. NG: Repair or reconnect the hose.
19. CLEAN EVAP PURGE LINE Clean EVAP purge line (pipe and rubber tube) using air blower. : GO TO 20.
20. CHECK EVAP/ORVR LINE Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper connection. For location, refer to «ON BOARD REFUELING VAPOR RECOVERY (ORVR)»(ref-169809-S10583110502004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. OK or NG OK: GO TO 21. NG: Repair or replace hoses and tubes.
21. CHECK RECIRCULATION LINE Check recirculation line between filler neck tube and fuel tank for clogging, kink, cracks, looseness and improper connection. OK or NG OK: GO TO 22. NG: Repair or replace hose, tube or filler neck tube.
22. CHECK REFUELING EVAP VAPOR CUT VALVE Refer to «REFUELING EVAP VAPOR CUT VALVE»(ref-169809-S21674274852004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. OK or NG OK: GO TO 23. NG: Replace refueling EVAP vapor cut valve with fuel tank.
23. CHECK FUEL LEVEL SENSOR Refer to «FUEL LEVEL SENSOR UNIT INSPECTION»(ref-170082-S00092696412005010600000) in GAUGES & INSTRUMENT PANEL - TITAN article in ACCESSORIES & BODY, CAB. . OK or NG OK: GO TO 24. NG: Replace fuel level sensor unit.
24. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

Fuel Level Sensor

Refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY in FUEL SYSTEM - TITAN article.

Use this procedure to check the overall function of the fuel level sensor function. During this check, a 1st trip DTC might not be confirmed.

Refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY in FUEL SYSTEM - TITAN article.

Refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY in FUEL SYSTEM - TITAN article.

Use this procedure to check the overall function of the vehicle speed sensor circuit. During this check, a 1st trip DTC might not be confirmed.

WITH GST

1. Lift up drive wheels.
2. Start engine.
3. Read vehicle speed sensor signal in MODE 1 with GST.
4. The vehicle speed sensor on GST should be able to exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position.
5. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S38325137172004120900000) .

Specification data are reference values.

Scheme 761

Power Steering Pressure Sensor

Refer to HYDRAULIC LINE in POWER STEERING - TITAN article. .

With CONSULT-II

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S22975521792004120900000) .

With GST

Follow the procedure "With CONSULT-II" above.

With CONSULT-II

1. Turn ignition switch ON and wait at least 1 second.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
4. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S22975521792004120900000) .

With GST

Follow the procedure "With CONSULT-II" above.

Procedure For Malfunction C

With CONSULT-II

1. Turn ignition switch ON and wait at least 1 second.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
4. Repeat step 3 for 32 times.
5. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S22975521792004120900000) .

With GST

Follow the procedure "With CONSULT-II" above.

Specification data are reference values.

Scheme 762

Scheme 763

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 764

Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II.

Scheme 765

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 766

Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II.

Scheme 767

Scheme 768

Scheme 769

Scheme 770

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT Disconnect air fuel ratio (A/F) sensor 1 harness connector. Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK: GO TO 4. NG: GO TO 3.
3. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 IPDM E/R harness connector E119 10A fuse Harness for open or short between A/F sensor 1 and fuse Repair or replace harness or connectors.
4. CHECK A/F SENSOR 1 HEATER OUTPUT SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between ECM terminal 2 (bank 1) or 24 (bank 2) and A/F sensor 1 terminal 4. Refer to «WIRING DIAGRAM»(ref-169472-S40928928872004120900000) . Continuity should exist. Also check harness for short to ground or short to power. OK or NG OK: GO TO 5. NG: Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK A/F SENSOR 1 HEATER Refer to «COMPONENT INSPECTION»(ref-169472-S19166028532004120900000) . OK or NG OK: GO TO 6. NG: Replace A/F sensor 1.
6. CHECK INTERMITTENT INCIDENT Perform «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . OK or NG OK: Replace A/F sensor 1. NG: Repair or replace.

Air Fuel Ratio (A/F) Sensor 1 Heater

Check resistance between terminals 3 and 4.

1. Resistance: 2.3 - 4.3 ohms at 25°C (77°F)

Check continuity between terminals 3 and 1, 2, 5, 6, terminals 4 and 1, 2, 5, 6.

1. Continuity should not exist.

If NG, replace the A/F sensor 1.

Scheme 771

Air Fuel Ratio (A/F) Sensor 1

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Procedure For Malfunction A And B

With CONSULT-II

1. Turn ignition switch ON and wait at least 1 second.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Shift selector lever to D position and wait at least 2 seconds.
4. Shift selector lever to P position.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Turn ignition switch ON and wait at least 1 second.
7. Shift selector lever to D position and wait at least 2 seconds.
8. Shift selector lever to P position.
9. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
10. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S06671382902004120900000) .

With GST

Follow the procedure "With CONSULT-II" above.

With CONSULT-II

1. Turn ignition switch ON and wait at least 1 second.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Shift selector lever to D position and wait at least 2 seconds.
4. Shift selector lever to N, P position.
5. Start engine and let it idle for 3 seconds.
6. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S06671382902004120900000) .

With GST

Follow the procedure "With CONSULT-II" above.

Scheme 772

1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY Remove the intake air duct. Check if a foreign matter is caught between the throttle valve and the housing. OK or NG OK: GO TO 2. NG: Remove the foreign matter and clean the electric throttle control actuator inside.
2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR Replace the electric throttle control actuator. Perform «THROTTLE VALVE CLOSED POSITION LEARNING»(ref-169712-S39661707712004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. Perform «IDLE AIR VOLUME LEARNING»(ref-169712-S09460714722004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. INSPECTION END

Refer to INTAKE MANIFOLD in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 773

Refer to INTAKE MANIFOLD in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 774

Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st trip DTC might not be confirmed.

WITH GST

Scheme 775

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 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 55 [HO2S2 (B1) signal] or 74 [HO2S2 (B2) 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 below 0.18V at least once during this procedure. If the voltage can be confirmed in step 6, step 7 is not necessary.
7. Keep vehicle at idling for 10 minutes, then check the voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position. The voltage should be below 0.18V at least once during this procedure.
8. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S09995548712004120900000) .

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 776

Specification data are reference values and are measured between each terminal and ground.

Scheme 777

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 778

Specification data are reference values and are measured between each terminal and ground.

Scheme 779

Scheme 780

Scheme 781

Scheme 782

Scheme 783

Scheme 784

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. CLEAR THE SELF-LEARNING DATA With CONSULT-II Start engine and warm it up to normal operating temperature. Select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-II. Clear the self-learning control coefficient by touching "CLEAR". Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0172 or P0175 detected? Is it difficult to start engine? Without CONSULT-II Start engine and warm it up to normal operating temperature. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector, and restart and run engine for at least 5 seconds at idle speed. Stop engine and reconnect mass air flow sensor harness connector. Make sure DTC P0102 is displayed. Erase the DTC memory. Refer to «HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION»(ref-169472-S16933045562004120900000) Make sure DTC P0000 is displayed. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0172 or P0175 detected? Is it difficult to start engine? Yes or No Yes: Perform trouble diagnosis for DTC P0172, P0175. Refer to «DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION»(ref-169472-S11533700932004120900000) . No: GO TO 3.
3. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect heated oxygen sensor 2 harness connector. Check harness continuity between HO2S2 terminal 4 and body ground. Refer to «WIRING DIAGRAM»(ref-169472-S20989781372004120900000) . Continuity should exist. Also check harness for short to power. OK or NG OK: GO TO 5. NG: GO TO 4.
4. DETECT MALFUNCTIONING PART Check the following. Harness connectors F14, E5 Harness for open or short between HO2S2 and body ground Repair open circuit or short to power in harness or connectors.
5. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Disconnect ECM harness connector. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S20989781372004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S20989781372004120900000) . Continuity should not exist. Also check harness for short to ground or short to power. OK or NG OK: GO TO 6. NG: Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK HEATED OXYGEN SENSOR 2 Refer to «COMPONENT INSPECTION»(ref-169472-S09841834172004120900000) . OK or NG OK: GO TO 7. NG: Replace malfunctioning heated oxygen sensor 2.
7. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

With CONSULT-II

Scheme 785

Scheme 786

Scheme 787

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
2. Start engine and warm it up to the normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and 4,000 RPM for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Select "FUEL INJECTION" in "ACTIVE TEST" mode, and select "HO2S2 (B1)/(B2)" as the monitor item with CONSULT-II.
7. Check "HO2S2 (B1)/(B2)" at idle speed when adjusting "FUEL INJECTION" to +/-25%.

"HO2S2 (B1)/(B2)" should be above 0.70V at least once when the "FUEL INJECTION" is +25%.

"HO2S2 (B1)/(B2)" should be below 0.18V at least once when the "FUEL INJECTION" is --25%.

Without CONSULT-II

Scheme 788

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 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 55 [HO2S2 (B1) signal] or 74 [HO2S2 (B2) 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 0.70V at least once during this procedure. If the voltage is above 0.70V at step 6, step 7 is not necessary.
7. Keep vehicle at idling for 10 minutes, then check voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position. The voltage should be below 0.18V at least once during this procedure.
8. If NG, replace heated oxygen sensor 2.

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 789

Scheme 790

Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st trip DTC might not be confirmed.

WITH GST

Scheme 791

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 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 55 [HO2S2 (B1) signal] or 74 [HO2S2 (B2) 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 0.70V at least once during this procedure. If the voltage can be confirmed in step 6, step 7 is not necessary.
7. Keep vehicle at idling for 10 minutes, then check the voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position. The voltage should be above 0.70V at least once during this procedure.
8. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S26092763142004120900000) .

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 792

Specification data are reference values and are measured between each terminal and ground.

Scheme 793

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 794

Specification data are reference values and are measured between each terminal and ground.

Scheme 795

Scheme 796

Scheme 797

Scheme 798

Scheme 799

Scheme 800

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. CLEAR THE SELF-LEARNING DATA With CONSULT-II Start engine and warm it up to normal operating temperature. Select "SELF-LEARNING CONT" in "WORK SUPPORT" mode With CONSULT-II. Clear the self-learning control coefficient by touching "CLEAR". Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171 or P0174 detected? Is it difficult to start engine? Without CONSULT-II Start engine and warm it up to normal operating temperature. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector, and restart and run engine for at least 5 seconds at idle speed. Stop engine and reconnect mass air flow sensor harness connector. Make sure DTC P0102 is displayed. Erase the DTC memory. Refer to «HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION»(ref-169472-S16933045562004120900000) . Make sure DTC P0000 is displayed. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171 or P0174 detected? Is it difficult to start engine? Yes or No Yes: Perform trouble diagnosis for DTC P0171 or P0174. Refer to «DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION»(ref-169472-S31237275982004120900000) . No: GO TO 3.
3. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect heated oxygen sensor 2 harness connector. Check harness continuity between HO2S2 terminal 4 and body ground. Refer to «WIRING DIAGRAM»(ref-169472-S34297639032004120900000) . Continuity should exist. Also check harness for short to power. OK or NG OK: GO TO 5. NG: GO TO 4.
4. DETECT MALFUNCTIONING PART Check the following. Harness connectors F14, E5 Harness for open or short between HO2S2 and body ground : Repair open circuit or short to power in harness or connectors.
5. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Disconnect ECM harness connector. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S34297639032004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S34297639032004120900000) . Continuity should not exist. Also check harness for short to ground or short to power. OK or NG OK: GO TO 6. NG: Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK HEATED OXYGEN SENSOR 2 Refer to «COMPONENT INSPECTION»(ref-169472-S25806306542004120900000) . OK or NG OK: GO TO 7. NG: Replace malfunctioning heated oxygen sensor 2.
7. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . : INSPECTION END

With CONSULT-II

Scheme 801

Scheme 802

Scheme 803

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
2. Start engine and warm it up to the normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and 4,000 RPM for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Select "FUEL INJECTION" in "ACTIVE TEST" mode, and select "HO2S2 (B1)/(B2)" as the monitor item with CONSULT-II.
7. Check "HO2S2 (B1)/(B2)" at idle speed when adjusting "FUEL INJECTION" to +/-25%. "HO2S2 (B1)/(B2)" should be above 0.70V at least once when the "FUEL INJECTION" is +25%. "HO2S2 (B1)/(B2)" should be below 018V at least once when the "FUEL INJECTION" is -25%.

Without CONSULT-II

Scheme 804

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 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 55 [HO2S2 (B1) signal] or 74 [HO2S2 (B2) 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 0.70V at least once during this procedure. If the voltage is above 0.70V at step 6, step 7 is not necessary.
7. Keep vehicle at idling for 10 minutes, then check voltage. Or check the voltage when coasting from 80 km/h (50 MPH) in D position. The voltage should be below 0.18V at least once during this procedure.
8. If NG, replace heated oxygen sensor 2.

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 805

Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be confirmed.

WITH CONSULT-II

Scheme 806

Scheme 807

1. Check the coolant level in the reservoir tank and radiator. Allow engine to cool before checking coolant level. If the coolant level in the reservoir tank and/or radiator is below the proper range, skip the following steps and go to «DIAGNOSTIC PROCEDURE»(ref-169472-S28200926772004120900000) .
2. Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to «DIAGNOSTIC PROCEDURE»(ref-169472-S28200926772004120900000) .
3. Turn ignition switch ON.
4. Perform "COOLING FAN" in "ACTIVE TEST" mode with CONSULT-II.
5. If the results are NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S28200926772004120900000) .

WITH GST

Scheme 808

Scheme 809

1. Check the coolant level in the reservoir tank and radiator. Allow engine to cool before checking coolant level. If the coolant level in the reservoir tank and/or radiator is below the proper range, skip the following steps and go to «DIAGNOSTIC PROCEDURE»(ref-169472-S28200926772004120900000)
2. Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to «DIAGNOSTIC PROCEDURE»(ref-169472-S28200926772004120900000) .
3. Disconnect engine coolant temperature sensor harness connector.
4. Connect 150 ohm resistor to engine coolant temperature sensor harness connector.
5. Start engine and make sure that cooling fan operates at higher speed than low speed. Be careful not to overheat engine.
6. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S28200926772004120900000) .

Refer to INTAKE MANIFOLD in ENGINE MECHANICAL - TITAN - 5.6L article.

Refer to INTAKE MANIFOLD in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 810

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 811

Specification data are reference values and are measured between each terminal and ground.

Scheme 812

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 813

Specification data are reference values and are measured between each terminal and ground.

Scheme 814

Scheme 815

Scheme 816

Scheme 817

Scheme 818

Scheme 819

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT Disconnect A/F sensor 1 harness connector. Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK: GO TO 4. NG: GO TO 3.
3. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 IPDM E/R harness connector E119 10A fuse Harness for open or short between A/F sensor 1 and fuse Repair or replace harness or connectors.
4. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S03294043202004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S03294043202004120900000) . Continuity should not exist. Also check harness for short to power. OK or NG OK: GO TO 5. NG: Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK INTERMITTENT INCIDENT Perform «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . OK or NG OK: Replace A/F sensor 1. NG: Repair or replace.

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 820

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 821

Specification data are reference values and are measured between each terminal and ground.

Scheme 822

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 823

Specification data are reference values and are measured between each terminal and ground.

Scheme 824

Scheme 825

Scheme 826

Scheme 827

Scheme 828

Scheme 829

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT Disconnect A/F sensor 1 harness connector. Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK: GO TO 4. NG: GO TO 3.
3. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 IPDM E/R harness connector E119 10A fuse Harness for open or short between A/F sensor 1 and fuse : Repair or replace harness or connectors.
4. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S14669657922004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S14669657922004120900000) . Continuity should not exist. Also check harness for short to power. OK or NG OK: GO TO 5. NG: Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK INTERMITTENT INCIDENT Perform «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . OK or NG OK: Replace A/F sensor 1. NG: Repair or replace.

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 830

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 831

Specification data are reference values and are measured between each terminal and ground.

Scheme 832

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 833

Specification data are reference values and are measured between each terminal and ground.

Scheme 834

Scheme 835

Scheme 836

Scheme 837

Scheme 838

Scheme 839

Scheme 840

Scheme 841

Scheme 842

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. RETIGHTEN A/F SENSOR 1 Loosen and retighten the A/F sensor 1. Tightening torque: 40 - 60 N-m (4.1 - 6.1 kg-m, 30 - 44 ft-lb) : GO TO 3.
3. CLEAR THE SELF-LEARNING DATA With CONSULT-II Start engine and warm it up to normal operating temperature. Select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-II. Clear the self-learning control coefficient by touching "CLEAR". Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171 or P0174 detected? Is it difficult to start engine? Without CONSULT-II Start engine and warm it up to normal operating temperature. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector. Restart engine and let it idle for at least 5 seconds. Stop engine and reconnect mass air flow sensor harness connector. Make sure DTC P0102 is displayed. Erase the DTC memory. Refer to «HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION»(ref-169472-S16933045562004120900000) . Make sure DTC P0000 is displayed. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171 or P0174 detected? Is it difficult to start engine? Yes or No Yes: Perform trouble diagnosis for DTC P0171 or P0174. Refer to «DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION»(ref-169472-S31237275982004120900000) . No: GO TO 4.
4. CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect A/F sensor 1 harness connector. Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK: GO TO 6. NG: GO TO 5.
5. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 IPDM E/R harness connector E119 10A fuse Harness for open or short between A/F sensor 1 and fuse : Repair or replace harness or connectors.
6. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S38675080202004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S38675080202004120900000) . Continuity should not exist. Also check harness for short to power. OK or NG OK: GO TO 7. NG: Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK A/F SENSOR 1 HEATER Refer to «COMPONENT INSPECTION»(ref-169472-S19166028532004120900000) . OK or NG OK: GO TO 8. NG: Replace A/F sensor 1.
8. CHECK INTERMITTENT INCIDENT Perform «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . OK or NG OK: Replace A/F sensor 1. NG: Repair or replace.

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 843

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 844

Specification data are reference values and are measured between each terminal and ground.

Scheme 845

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 846

Specification data are reference values and are measured between each terminal and ground.

Scheme 847

Scheme 848

Scheme 849

Scheme 850

Scheme 851

Scheme 852

Scheme 853

Scheme 854

Scheme 855

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. RETIGHTEN A/F SENSOR 1 Loosen and retighten the A/F sensor 1. Tightening torque: 40 - 60 N-m (4.1 - 6.1 kg-m, 30 - 44 ft-lb) GO TO 3.
3. CLEAR THE SELF-LEARNING DATA. With CONSULT-II Start engine and warm it up to normal operating temperature. Select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-II. Clear the self-learning control coefficient by touching "CLEAR". Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0172 or P0175 detected? Is it difficult to start engine? Without CONSULT-II Start engine and warm it up to normal operating temperature. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector. Restart engine and let it idle for at least 5 seconds. Stop engine and reconnect mass air flow sensor harness connector. Make sure DTC P0102 is displayed. Erase the DTC memory. Refer to «HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION»(ref-169472-S16933045562004120900000) . Make sure DTC P0000 is displayed. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0172 or P0175 detected? Is it difficult to start engine? Yes or No Yes: Perform trouble diagnosis for DTC P0172 or P0175. Refer to «DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION»(ref-169472-S11533700932004120900000) . No: GO TO 4.
4. CHECK HARNESS CONNECTOR Turn ignition switch OFF. Disconnect A/F sensor 1 harness connector. Check harness connector for water. Water should not exit. OK or NG OK: GO TO 5. NG: Repair or replace harness connector.
5. CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK: GO TO 7. NG: GO TO 6.
6. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 IPDM E/R harness connector E119 10A fuse Harness for open or short between A/F sensor 1 and fuse : Repair or replace harness or connectors.
7. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S41940381572004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S41940381572004120900000) . Continuity should not exist. Also check harness for short to power. OK or NG OK: GO TO 8. NG: Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK A/F SENSOR 1 HEATER Refer to «COMPONENT INSPECTION»(ref-169472-S19166028532004120900000) . OK or NG OK: GO TO 9. NG: Replace A/F sensor 1.
9. CHECK INTERMITTENT INCIDENT Perform «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . OK or NG OK: Replace A/F sensor 1. NG: Repair or replace.

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 856

Use this procedure to check the overall function of the A/F sensor 1 circuit. During this check, a 1st trip DTC might not be confirmed.

WITH GST

1. Start engine and warm it up to normal operating temperature.
2. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in the suitable gear position.
3. Set 5th position, then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH). NOTE: Never apply brake during releasing the accelerator pedal.
4. Repeat steps 2 to 3 five times.
5. Stop the vehicle and turn ignition switch OFF.
6. Wait at least 10 seconds and restart engine.
7. Repeat steps 2 to 3 five times.
8. Stop the vehicle and connect GST to the vehicle.
9. Make sure that no DTC is displayed. If the DTC is displayed, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S05047325282004120900000) .

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 857

Specification data are reference values and are measured between each terminal and ground.

Scheme 858

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 859

Specification data are reference values and are measured between each terminal and ground.

Scheme 860

Scheme 861

Scheme 862

Scheme 863

Scheme 864

Scheme 865

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT Disconnect A/F sensor 1 harness connector. Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK: GO TO 4. NG: GO TO 3.
3. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 IPDM E/R harness connector E119 10A fuse Harness for open or short between A/F sensor 1 and fuse : Repair or replace harness or connectors.
4. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S06289314982004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S06289314982004120900000) . Continuity should not exist. Also check harness for short to power. OK or NG OK: GO TO 5. NG: Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK INTERMITTENT INCIDENT Perform «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . OK or NG OK: Replace A/F sensor 1. NG: Repair or replace.

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 866

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 867

Specification data are reference values and are measured between each terminal and ground.

Scheme 868

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 869

Specification data are reference values and are measured between each terminal and ground.

Scheme 870

Scheme 871

Scheme 872

Scheme 873

Scheme 874

Scheme 875

Scheme 876

Scheme 877

Scheme 878

Scheme 879

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. RETIGHTEN A/F SENSOR 1 Loosen and retighten the A/F sensor 1. Tightening torque: 40 - 60 N-m (4.1 - 6.1 kg-m, 30 - 44 ft-lb) : GO TO 3.
3. CHECK EXHAUST GAS LEAK Start engine and run it at idle. Listen for an exhaust gas leak before three way catalyst (manifold). OK or NG OK: GO TO 4. NG: Repair or replace.
4. CHECK FOR INTAKE AIR LEAK Listen for an intake air leak after the mass air flow sensor. OK or NG OK: GO TO 5. NG: Repair or replace.
5. CLEAR THE SELF-LEARNING DATA With CONSULT-II Start engine and warm it up to normal operating temperature. Select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-II. Clear the self-learning control coefficient by touching "CLEAR" or "START". Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171, P172, P0174 or P0175 detected? Is it difficult to start engine? Without CONSULT-II Start engine and warm it up to normal operating temperature. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector. Restart engine and let it idle for at least 5 seconds. Stop engine and reconnect mass air flow sensor harness connector. Make sure DTC P0102 is displayed. Erase the DTC memory. Refer to «HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION»(ref-169472-S16933045562004120900000) . Make sure DTC P0000 is displayed. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? Is it difficult to start engine? Yes or No Yes: Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to «DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION»(ref-169472-S31237275982004120900000) or «DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION»(ref-169472-S11533700932004120900000) . No: GO TO 6.
6. CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect A/F sensor 1 harness connector. Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK: GO TO 8. NG: GO TO 7.
7. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 IPDM E/R harness connector E119 10A fuse Harness for open or short between A/F sensor 1 and fuse Repair or replace harness or connectors.
8. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S31648298232004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S31648298232004120900000) . Continuity should not exist. Also check harness for short to power. OK or NG OK: GO TO 9. NG: Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER Refer to «COMPONENT INSPECTION»(ref-169472-S19166028532004120900000) . OK or NG OK: GO TO 10. NG: Replace A/F sensor 1.
10. CHECK MASS AIR FLOW SENSOR Refer to «COMPONENT INSPECTION»(ref-169472-S34688491882004120900000) . OK or NG OK: GO TO 11. NG: Replace mass air flow sensor.
11. CHECK PCV VALVE Refer to «POSITIVE CRANKCASE VENTILATION»(ref-169809-S21083617772004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. OK or NG OK: GO TO 12. NG: Repair or replace PCV valve.
12. CHECK INTERMITTENT INCIDENT Perform «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . OK or NG OK: Replace A/F sensor 1. NG: Repair or replace.

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 880

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 881

Specification data are reference values and are measured between each terminal and ground.

Scheme 882

For complete wiring diagrams, see SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 883

Specification data are reference values and are measured between each terminal and ground.

Scheme 884

Scheme 885

Scheme 886

Scheme 887

Scheme 888

Scheme 889

Scheme 890

Scheme 891

Scheme 892

Scheme 893

1. CHECK GROUND CONNECTIONS Turn ignition switch OFF. Loosen and retighten ground three screws on the body. Refer to «GROUND INSPECTION»(ref-169472-S14334914712004120900000) . OK or NG OK: GO TO 2. NG: Repair or replace ground connections.
2. RETIGHTEN A/F SENSOR 1 Loosen and retighten the A/F sensor 1. Tightening torque: 40 - 60 N-m (4.1 - 6.1 kg-m, 30 - 44 ft-lb) : GO TO 3.
3. CHECK EXHAUST GAS LEAK Start engine and run it at idle. Listen for an exhaust gas leak before three way catalyst (Manifold). OK or NG OK: GO TO 4. NG: Repair or replace.
4. CHECK FOR INTAKE AIR LEAK Listen for an intake air leak after the mass air flow sensor. OK or NG OK: GO TO 5. NG: Repair or replace.
5. CLEAR THE SELF-LEARNING DATA With CONSULT-II Start engine and warm it up to normal operating temperature. Select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-II. Clear the self-learning control coefficient by touching "CLEAR" or "START". Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171, P172, P0174 or P0175 detected? Is it difficult to start engine? Without CONSULT-II Start engine and warm it up to normal operating temperature. Turn ignition switch OFF. Disconnect mass air flow sensor harness connector. Restart engine and let it idle for at least 5 seconds. Stop engine and reconnect mass air flow sensor harness connector. Make sure DTC P0102 is displayed. Erase the DTC memory. Refer to «HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION»(ref-169472-S16933045562004120900000) . Make sure DTC P0000 is displayed. Run engine for at least 10 minutes at idle speed. Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? Is it difficult to start engine? Yes or No Yes: Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to «DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION»(ref-169472-S31237275982004120900000) or «DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION»(ref-169472-S11533700932004120900000) . No: GO TO 6.
6. CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect A/F sensor 1 harness connector. Turn ignition switch ON. Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK or NG OK: GO TO 8. NG: GO TO 7.
7. DETECT MALFUNCTIONING PART Check the following. Harness connectors E5, F14 IPDM E/R harness connector E119 10A fuse Harness for open or short between A/F sensor 1 and fuse : Repair or replace harness or connectors.
8. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect ECM harness connector. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows. Refer to «WIRING DIAGRAM»(ref-169472-S38736679082004120900000) . Continuity should exist. Check harness continuity between the following terminals and ground. Refer to «WIRING DIAGRAM»(ref-169472-S38736679082004120900000) . Continuity should not exist. Also check harness for short to power. OK or NG OK: GO TO 9. NG: Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER Refer to «COMPONENT INSPECTION»(ref-169472-S19166028532004120900000) . OK or NG OK: GO TO 10. NG: Replace A/F sensor 1.
10. CHECK MASS AIR FLOW SENSOR Refer to «COMPONENT INSPECTION»(ref-169472-S34688491882004120900000) . OK or NG OK: GO TO 11. NG: Replace mass air flow sensor.
11. CHECK PCV VALVE Refer to «POSITIVE CRANKCASE VENTILATION»(ref-169809-S21083617772004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. OK or NG OK: GO TO 12. NG: Repair or replace PCV valve.
12. CHECK INTERMITTENT INCIDENT Perform «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . OK or NG OK: Replace A/F sensor 1. NG: Repair or replace.

Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST in ENGINE MECHANICAL - TITAN - 5.6L article.

Scheme 894

This system controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass passage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor from the EVAP canister is regulated as the air flow changes.

Specification data are reference values.

Scheme 895

Scheme 896

With CONSULT-II

Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.

Scheme 897

Scheme 898

Without CONSULT-II

Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.

Scheme 899

Scheme 900

Refer to INTAKE MANIFOLD in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 901

Scheme 902

Specification data are reference values.

Scheme 903

Specification data are reference values.

Scheme 904

Specification data are reference values.

Scheme 905

Scheme 906

Use this procedure to check the overall function of the park/neutral position (PNP) switch circuit. During this check, a 1st trip DTC might not be confirmed.

WITH GST

Scheme 907

Scheme 908

1. Turn ignition switch ON.
2. Check voltage between ECM terminal 102 (PNP switch signal) and ground under the following conditions.
3. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S12032121202004120900000) .

Specification data are reference values.

Scheme 909

Specification data are reference values.

Scheme 910

Accelerator Pedal

Refer to ACCELERATOR CONTROL SYSTEM in ACCELERATOR CONTROL SYSTEM - TITAN article.

Specification data are reference values.

Scheme 911

Refer to ACCELERATOR CONTROL SYSTEM in ACCELERATOR CONTROL SYSTEM - TITAN article.

Specification data are reference values.

Scheme 912

Refer to INTAKE MANIFOLD in ENGINE MECHANICAL - TITAN - 5.6L article.

Specification data are reference values.

Scheme 913

Refer to ACCELERATOR CONTROL SYSTEM in ACCELERATOR CONTROL SYSTEM - TITAN article.