Engine Control System: Diagnosis Nissan Titan I

DTC NO. 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 .

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DTC INDEX

ON BOARD DIAGNOSTIC (OBD) SYSTEM OF ENGINE AND A/T

The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the driver of a malfunction causing emission deterioration.

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1. Always use a 12 volt battery as power source.
2. Do not attempt to disconnect battery cables while engine is running.
3. Before connecting or disconnecting the ECM harness connector, turn ignition switch OFF and disconnect negative battery cable. Failure to do so may damage the ECM because battery voltage is applied to ECM even if ignition switch is turned OFF.
4. Before removing parts, turn ignition switch OFF and then disconnect battery ground cable.
5. Do not disassemble ECM.
6. If a battery cable is disconnected, the memory will return to the ECM value. The ECM will now start to self-control at its initial value. Engine operation can vary slightly when the terminal is disconnected. However, this is not an indication of a malfunction. Do not replace parts because of a slight variation.
7. When connecting ECM harness connector, fasten it securely with a lever as far as it will go as shown in the figure.
8. When connecting or disconnecting pin connectors into or from ECM, take care not to damage pin terminals (bend or break). Make sure that there are not any bends or breaks on ECM pin terminal, when connecting pin connectors.
9. Securely connect ECM harness connectors. A poor connection can cause an extremely high (surge) voltage to develop in coil and condenser, thus resulting in damage to ICs.
10. Keep engine control system harness at least 10 cm (4 in) away from adjacent harness, to prevent engine control system malfunctions due to receiving external noise, degraded operation of ICs, etc.
11. Keep engine control system parts and harness dry.
12. Before replacing ECM, perform ECM Terminals and Reference Value inspection and make sure ECM functions properly. Refer to «ECM TERMINALS AND REFERENCE VALUE»(ref-169472-S41544202192004120900000) .
13. Handle mass air flow sensor carefully to avoid damage.
14. Do not disassemble mass air flow sensor.
15. Do not clean mass air flow sensor with any type of detergent.
16. Do not disassemble electric throttle control actuator.
17. Even a slight leak in the air intake system can cause serious incidents.
18. Do not shock or jar the camshaft position sensor (PHASE), crankshaft position sensor (POS).
19. After performing each TROUBLE DIAGNOSIS, perform DTC Confirmation Procedure or Overall Function Check. The DTC should not be displayed in the DTC Confirmation Procedure if the repair is completed. The Overall Function Check should be a good result if the repair is completed.
20. When measuring ECM signals with a circuit tester, never allow the two tester probes to contact. Accidental contact of probes will cause a short circuit and damage the ECM power transistor.
21. Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
22. B1 indicates the bank 1, B2 indicates the bank 2 as shown in the figure.
23. Do not operate fuel pump when there is no fuel in lines.
24. Tighten fuel hose clamps to the specified torque.
25. Do not depress accelerator pedal when starting.
26. Immediately after starting, do not rev up engine unnecessarily.
27. Do not rev up engine just prior to shutdown.
28. When installing C.B. ham radio or a mobile phone, be sure to observe the following as it may adversely affect electronic control systems depending on installation location. Keep the antenna as far as possible from the electronic control units. Keep the antenna feeder line more than 20 cm (8 in) away from the harness of electronic controls. Do not let them run parallel for a long distance. Adjust the antenna and feeder line so that the standing-wave radio can be kept smaller. Be sure to ground the radio to vehicle body.

WIRING DIAGRAMS AND TROUBLE DIAGNOSIS

When you read wiring diagrams, refer to the following

1. «HOW TO READ WIRING DIAGRAMS»(ref-215097-S20326558532006010900000) in GENERAL INFORMATION - TITAN article in GENERAL INFORMATION.
2. «POWER DISTRIBUTION»(ref-166656-S24551469312004092400000) in SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

When you perform trouble diagnosis, refer to the following

1. «HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSE»(ref-215097-S13828483112006010900000) in GENERAL INFORMATION - TITAN article in GENERAL INFORMATION.
2. «HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT»(ref-215097-S25609390062006010900000) in GENERAL INFORMATION - TITAN article in GENERAL INFORMATION.

DTC AND 1ST TRIP DTC

The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip DTC will not be displayed.

If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the 2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL lights up. In other words, the DTC is stored in the ECM memory and the MIL lights up when the same malfunction occurs in two consecutive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MIL during the 1st trip, the DTC and 1st trip DTC are stored in the ECM memory.

Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION .

For malfunctions in which 1st trip DTCs are displayed, refer to EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS . These items are required by legal regulations to continuously monitor the system/component. In addition, the items monitored non-continuously are also displayed on CONSULT-II.

1st trip DTC is specified in Mode 7 of SAE J1979. 1st trip DTC detection occurs without lighting up the MIL and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent the vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.

When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame data as specified in Work Flow procedure Step II, refer to WORK FLOW . Then perform DTC Confirmation Procedure or Overall Function Check to try to duplicate the malfunction. If the malfunction is duplicated, the item requires repair.

How to Read DTC and 1st Trip DTC

DTC and 1st trip DTC can be read by the following methods.

With CONSULT-II

With GST

CONSULT-II or GST (Generic Scan Tool) Examples: P0340, P1148, P1706, etc.

These DTCs are prescribed by SAE J2012.

(CONSULT-II also displays the malfunctioning component or system.)

No Tools

The number of blinks of the MIL in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC. Example: 0340, 1148, 1706, etc.

These DTCs are controlled by NISSAN.

1. 1st trip DTC No. is the same as DTC No.
2. Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indicate whether the malfunction is still occurring or has occurred in the past and has returned to normal. CONSULT-II can identify malfunction status as shown below. Therefore, using CONSULT-II (if available) is recommended.

A sample of CONSULT-II display for DTC and 1st trip DTC is shown below. DTC or 1st trip DTC of a malfunction is displayed in "SELF-DIAGNOSTIC RESULTS" mode of CONSULT-II. Time data indicates how many times the vehicle was driven after the last detection of a DTC.

If the DTC is being detected currently, the time data will be [0].

If a 1st trip DTC is stored in the ECM, the time data will be [1t].

Scheme 108

SYSTEM READINESS TEST (SRT) CODE

System Readiness Test (SRT) code is specified in Mode 1 of SAE J1979.

As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the status of SRT be used to indicate whether the ECM has completed self-diagnosis of major emission systems and components. Completion must be verified in order for the emissions inspection to proceed.

If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating "INCMP", use the information in this Service Manual to set the SRT to "CMPLT".

In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT status will indicate "CMPLT" for each application system. Once set as "CMPLT", the SRT status remains "CMPLT" until the self-diagnosis memory is erased.

Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's normal driving pattern; the SRT will indicate "INCMP" for these items.

Note. The SRT will also indicate "INCMP" if the self-diagnosis memory is erased for any reason or if the ECM memory power supply is interrupted for several hours. If, during the state emissions inspection, the SRT indicates "CMPLT" for all test items, the inspector will continue with the emissions test. However, if the SRT indicates "INCMP" for one or more of the SRT items the vehicle is returned to the customer untested.

Note. If MIL is ON during the state emissions inspection, the vehicle is also returned to the customer untested even though the SRT indicates "CMPLT" for all test items. Therefore, it is important to check SRT ("CMPLT") and DTC (No DTCs) before the inspection.

TEST VALUE AND TEST LIMIT (GST ONLY - NOT APPLICABLE TO CONSULT-II)

The following is the information specified in Mode 6 of SAE J1979.

The test value is a parameter used to determine whether a system/circuit diagnostic test is OK or NG while being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the maximum or minimum value and is compared with the test value being monitored.

These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be displayed on the GST screen.

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On Board Diagnostic System Function

The on board diagnostic system has the following 3 functions.

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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.

How To Switch Diagnostic Test Mode

Note. It is better to count the time accurately with a clock. It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has a malfunction. Always ECM returns to Diagnostic Test Mode I after ignition switch is turned OFF.

How To Set Diagnostic Test Mode II (Self-Diagnostic Results)

1. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
2. Repeat the following procedure quickly five times within 5 seconds. Fully depress the accelerator pedal. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts blinking.
4. Fully release the accelerator pedal.

ECM has entered to Diagnostic Test Mode II (Self-diagnostic results).

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How to Erase Diagnostic Test Mode II (Self-diagnostic Results)

1. Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to «HOW TO SET DIAGNOSTIC TEST MODE II (SELF-DIAGNOSTIC RESULTS)»(ref-169472-S15550497732004120900000) .
2. Fully depress the accelerator pedal and keep it for more than 10 seconds. The emission-related diagnostic information has been erased from the backup memory in the ECM.
3. Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.

Diagnostic Test Mode I - Bulb Check

In this mode, the MIL on the instrument panel should stay ON. If it remains OFF, check the bulb. Refer to WARNING LAMPS in GAUGES & INSTRUMENT PANEL - TITAN article in ACCESSORIES & BODY, CAB, or see MIL AND DATA LINK CONNECTOR in SYSTEM & COMPONENT TESTING - TITAN article.

Scheme 113

Diagnostic Test Mode II - Self-Diagnostic Results

In this mode, the DTC and 1st trip DTC are indicated by the number of blinks of the MIL as shown below. The DTC and 1st trip DTC are displayed at the same time. If the MIL does not illuminate in diagnostic test mode I (Malfunction warning), all displayed items are 1st trip DTCs. If only one code is displayed when the MIL illuminates in diagnostic test mode II (SELF-DIAGNOSTIC RESULTS), it is a DTC; if two or more codes are displayed, they may be either DTCs or 1st trip DTCs. DTC No. is same as that of 1st trip DTC. These unidentified codes can be identified by using the CONSULT-II or GST. A DTC will be used as an example for how to read a code.

Scheme 114

A particular trouble code can be identified by the number of four-digit numeral flashes. The "zero" is indicated by the number of ten flashes. The length of time the 1,000th-digit numeral flashes on and off is 1.2 seconds consisting of an ON (0.6-second) - OFF (0.6-second) cycle.

The 100th-digit numeral and lower digit numerals consist of a 0.3-second ON and 0.3-second OFF cycle.

A change from one digit numeral to another occurs at an interval of 1.0-second OFF. In other words, the later numeral appears on the display 1.3 seconds after the former numeral has disappeared.

A change from one trouble code to another occurs at an interval of 1.8-second OFF.

In this way, all the detected malfunctions are classified by their DTC numbers. The DTC 0000 refers to no malfunction. (See INDEX FOR DTC )

The DTC can be erased from the back up memory in the ECM by depressing accelerator pedal. Refer to HOW TO ERASE DIAGNOSTIC TEST MODE II (SELF-DIAGNOSTIC RESULTS) .

1. If the battery is disconnected, the DTC will be lost from the backup memory within 24 hours.
2. Be careful not to erase the stored memory before starting trouble diagnoses.

Relationship Between MIL, 1st Trip DTC, DTC, And Detectable Items

1. When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data are stored in the ECM memory.
2. When the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data are stored in the ECM memory, and the MIL will come on. For details, refer to «TWO TRIP DETECTION LOGIC»(ref-169472-S15589826542004120900000) .
3. The MIL will go off after the vehicle is driven 3 times with no malfunction. The drive is counted only when the recorded driving pattern is met (as stored in the ECM). If another malfunction occurs while counting, the counter will reset.
4. The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (driving pattern A) without the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and Fuel Injection System, the DTC and freeze frame data will be stored until the vehicle is driven 80 times (driving pattern C) without the same malfunction recurring. The "TIME" in "SELF-DIAGNOSTIC RESULTS" mode of CONSULT-II will count the number of times the vehicle is driven.
5. The 1st trip DTC is not displayed when the self-diagnosis results in OK for the 2nd trip.

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DTC INSPECTION PRIORITY CHART

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart.

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

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ECM Inspection Table

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

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1. Diagnostic trouble codes
2. 1st trip diagnostic trouble codes
3. Freeze frame data
4. 1st trip freeze frame data
5. System readiness test (SRT) codes
6. Test values
7. Others

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Inspection Procedure

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1. Turn ignition switch OFF.
2. Connect "CONSULT-II" and "CONSULT-II CONVERTER" to data link connector, which is located under LH dash panel near the center console.
3. Turn ignition switch ON.
4. Touch "START (NISSAN BASED VHCL)".
5. Touch "ENGINE". If "ENGINE" is not indicated, go to «CONSULT-II DATA LINK CONNECTOR (PLC) CIRCUIT»(ref-215097-S07434654842006010900000) in GENERAL INFORMATION article in GENERAL INFORMATION.
6. Perform each diagnostic test mode according to each service procedure.

For further information, see the CONSULT-II Operation Manual.

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Self Diagnostic Item

Regarding items of DTC and 1st trip DTC, refer to INDEX FOR DTC )

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Note. Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

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Note. Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

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Testing Condition

1. Vehicle driven distance: More than 5,000 km (3,017 miles)
2. Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm 2 , 14.25 - 15.12 psi)
3. Atmospheric temperature: 20 - 30°C (68 - 86°F)
4. Engine coolant temperature: 75 - 95°C (167 - 203°F)
5. Transmission: Warmed-up *1
6. Electrical load: Not applied *2
7. Engine speed: Idle

*1: After the engine is warmed up to normal operating temperature, drive vehicle until "FLUID TEMP SE" (A/T) fluid temperature sensor signal) indicates more than 60°C (140°F).

*2: Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight ahead.

Note. Perform "DATA MONITOR (SPEC)" mode in maximum scale display. Perform BASIC INSPECTION . Confirm that the testing conditions indicated above are met. Select "B/FUEL SCHDL", "A/F ALPHA-B1", "A/F ALPHA-B2" and "MAS A/F SE-B1" in "DATA MONITOR (SPEC)" mode with CONSULT-II. Make sure that monitor items are within the SP value. If NG, go to Diagnostic Procedure .

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Diagnostic Procedure

1. INSPECTION START Erase (1st trip) DTCs. Refer to «HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION»(ref-169472-S16933045562004120900000) GO TO 2.
2. CHECK GROUND TERMINALS Check ground terminals for corroding or loose connection. Refer to «HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT»(ref-215097-S25609390062006010900000) in GENERAL INFORMATION - TITAN article in GENERAL INFORMATION. OK or NG OK: GO TO 3. NG: Repair or replace.
3. SEARCH FOR ELECTRICAL INCIDENT Perform «HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT»(ref-215097-S25609390062006010900000) in GENERAL INFORMATION - TITAN article in GENERAL INFORMATION. OK or NG OK: GO TO 4. NG: Repair or replace.
4. CHECK CONNECTOR TERMINALS Refer to «HOW TO PROBE CONNECTORS»(ref-215097-S04114230172006010900000) under HOW TO CHECK TERMINAL in GENERAL INFORMATION - TITAN article in GENERAL INFORMATION. . OK or NG OK: INSPECTION END NG: Repair or replace connector.

Ground Inspection

Ground connections are very important to the proper operation of electrical and electronic circuits. Ground connections are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can become an unwanted resistance. This unwanted resistance can change the way a circuit works.

Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can drastically affect an electronically controlled circuit. A poor or corroded ground can easily affect the circuit. Even when the ground connection looks clean, there can be a thin film of rust on the surface. When inspecting a ground connection follow these rules

1. Remove the ground bolt or screw.
2. Inspect all mating surfaces for tarnish, dirt, rust, etc.
3. Clean as required to assure good contact.
4. Reinstall bolt or screw securely.
5. Inspect for "add-on" accessories which may be interfering with the ground circuit.
6. If several wires are crimped into one ground eyelet terminal, check for proper crimps. Make sure all of the wires are clean, securely fastened and providing a good ground path. If multiple wires are cased in one eyelet make sure no ground wires have excess wire insulation.

For detailed ground distribution information, refer to GROUND DISTRIBUTION in SYSTEM WIRING DIAGRAMS - TITAN article in ELECTRICAL.

Scheme 148

DTC Confirmation Procedure

1. Turn ignition switch ON and wait at least 3 seconds.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S19370360962004120900000) .

1. INSPECTION START Turn ignition switch ON. Select "CAN DIAG SUPPORT MNTR" in "DATA MONITOR" mode with CONSULT-II. Print out the CONSULT-II screen. Go to «PRECAUTIONS WHEN USING CONSULT-II»(ref-237958-S27169695432006072000000) in LAN SYSTEM (INTRODUCTION) - TITAN article in ACCESSORIES & BODY, CAB.

Scheme 149

The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine coolant temperature.

Scheme 150

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.

Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at idle.

WITH CONSULT-II

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 the engine and keep the engine speed between 3,500 RPM and 4,000 RPM for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S38125443622004120900000) .

Scheme 151

WITH GST

Follow the procedure "WITH CONSULT-II" above.

On Board Diagnosis Logic

Note. This self-diagnosis has the one trip detection logic.

Scheme 152

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 DTC P0102

With CONSULT-II

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and wait at least 5 seconds.
4. If DTC is detected, go to «Diagnostic Procedure»(ref-169472-S37739621032004120900000) .

Scheme 153

With GST

Follow the procedure "With CONSULT-II" above.

Procedure For DTC P0103

With CONSULT-II

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to «Diagnostic Procedure»(ref-169472-S37739621032004120900000) . If DTC is not detected, go to next step.
5. Start engine and wait at least 5 seconds.
6. If DTC is detected, go to «Diagnostic Procedure»(ref-169472-S37739621032004120900000) .

With GST

Follow the procedure "With CONSULT-II" above.

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.

WITH CONSULT-II

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to «Diagnostic Procedure»(ref-169472-S02926103642004120900000) .

Scheme 154

With GST

Follow the procedure "WITH CONSULT-II" above.

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.

WITH CONSULT-II

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S17846864732004120900000) .

Scheme 155

With GST

Follow the procedure "WITH CONSULT-II" above.

These self-diagnoses have the one trip detection logic.

Scheme 156

Fail-Safe Mode

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

Scheme 157

In fail-safe mode, the acceleration will be poor.

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.

TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 8V at idle.

WITH CONSULT-II

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to «Diagnostic Procedure»(ref-169472-S19749659452004120900000) .

Scheme 158

With GST

Follow the procedure "WITH CONSULT-II" above.

Note. This self-diagnosis has the one trip detection logic.

Scheme 159

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.

WITH CONSULT-II

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Check that "COOLAN TEMP/S" is above 10°C (50°F). If it is above 10°C (50°F), the test result will be OK. If it is below 10°C (50°F), go to following step.
4. Start engine and run it for 65 minutes at idle speed. If "COOLAN TEMP/S" increases to more than 10°C (50°F) within 65 minutes, stop engine because the test result will be OK.
5. If 1st trip DTC is detected, go to «Diagnostic Procedure»(ref-169472-S12230172592004120900000) .

Scheme 160

With GST

Follow the procedure "WITH CONSULT-II" above.

Scheme 161

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 ENGINE COOLANT TEMPERATURE SENSOR Refer to «COMPONENT INSPECTION»(ref-169472-S18788746732004120900000) . OK or NG OK: GO TO 3. NG: Replace engine coolant temperature sensor.
3. CHECK THERMOSTAT OPERATION When the engine is cold [lower than 70°C (158°F)] condition, grasp lower radiator hose and confirm the engine coolant does not flow. OK or NG OK: GO TO 4. NG: Repair or replace thermostat. Refer to «THERMOSTAT AND WATER PIPING»(ref-169421-S17591558802004120800000) .
4. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

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1. Check resistance between engine coolant temperature sensor terminals 1 and 2 as shown in the figure.
2. If NG, replace engine coolant temperature sensor.

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.

This test may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.

WITH CONSULT-II

Scheme 165

1. Wait until engine coolant temperature is less than 90°C (194°F) Turn ignition switch ON. Select "DATA MONITOR" mode with CONSULT-II. Check the engine coolant temperature. If the engine coolant temperature is not less than 90°C (194°F), turn ignition switch OFF and cool down engine. Perform the following steps before engine coolant temperature is above 90°C (194°F).
2. Turn ignition switch ON.
3. Select "DATA MONITOR" mode with CONSULT-II.
4. Start engine.
5. Hold vehicle speed at more than 70 km/h (43 MPH) for 100 consecutive seconds.
6. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S32962889822004120900000) .

With GST

Follow the procedure "WITH CONSULT-II" above.

Scheme 166

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 INTAKE AIR TEMPERATURE SENSOR Refer to «COMPONENT INSPECTION»(ref-169472-S23787124872004120900000) . OK or NG OK: GO TO 3. NG: Replace mass air flow sensor (with intake air temperature sensor).
3. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

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Scheme 168

1. Check resistance between intake air temperature sensor terminals 5 and 6 under the following conditions.
2. If NG, replace mass air flow sensor (with intake air temperature sensor).

Engine coolant temperature has not risen enough to open the thermostat even though the engine has run long enough.

This is due to a leak in the seal or the thermostat stuck open.

Scheme 169

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.

1. For best results, perform at ambient temperature of -10°C (14°F) or higher.
2. For best results, perform at engine coolant temperature of -10°C (14°F) to 60°C (140°F).

WITH CONSULT-II

1. Replace thermostat with NEW one. Refer to «THERMOSTAT AND WATER PIPING»(ref-169421-S17591558802004120800000) in ENGINE COOLING SYSTEM - TITAN article. Use only a genuine NISSAN thermostat as a replacement. If an incorrect thermostat is used, the MIL may come on.
2. Turn ignition switch ON.
3. Select "COOLAN TEMP/S" in "DATA MONITOR" mode with CONSULT-II.
4. Check that the "COOLAN TEMP/S" is above 60°C (140°F). If it is below 60°C (140°F), go to following step. If it is above 60°C (140°F), cool down the engine to less than 60°C (140°F), then retry from step 1.
5. Drive vehicle for 10 consecutive minutes at 50-75 MPH (80-120 km/h). If 1st trip DTC is detected, go to «Diagnostic Procedure»(ref-169472-S34680400702004120900000) .

With GST

1. Follow the procedure "WITH CONSULT-II" above.

1. CHECK ENGINE COOLANT TEMPERATURE SENSOR Refer to «COMPONENT INSPECTION»(ref-169472-S32655321832004120900000) . OK or NG OK: INSPECTION END NG: Replace engine coolant temperature sensor.

The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the voltage is unusually high during the various driving condition such as fuel-cut.

Scheme 170

Scheme 171

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.

WITH CONSULT-II

Scheme 172

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. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S36595024572004120900000) .

With GST

Follow the procedure "WITH CONSULT-II" above.

The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the switching response of the sensor's voltage is faster than specified during the various driving condition such as fuel-cut.

Scheme 173

Scheme 174

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.

WITH CONSULT-II

For better results, perform "DTC WORK SUPPORT" at a temperature of 0 to 30 °C (32 to 86 °F).

Scheme 175

Scheme 176

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. Make sure that "COOLAN TEMP/S" indicates more than 70°C (158°F). If not, warm up engine and go to next step when "COOLAN TEMP/S" indication reaches to 70°C (158°F).
7. Select "HO2S2 (B1) P0139" or "HO2S2 (B2) P0159" of "HO2S2" in "DTC WORK SUPPORT" mode with CONSULT-II.
8. Start engine and following the instruction of CONSULT-II.
9. Make sure that "OK" is displayed after touching "SELF-DIAG RESULTS". If "NG" is displayed, refer to «DIAGNOSTIC PROCEDURE»(ref-169472-S04885145502004120900000) . If "CAN NOT BE DIAGNOSED" is displayed, perform the following. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle). Return to step 1.

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the A/F sensors 1. The ECM calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.

In case the amount of the compensation value is extremely large (the actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and lights up the MIL (2 trip detection logic).

Scheme 177

Scheme 178

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.

With CONSULT-II

Scheme 179

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-II.
4. Clear the self-learning control coefficient by touching "CLEAR".
5. Select "DATA MONITOR" mode with CONSULT-II.
6. Start engine again and let it idle for at least 10 minutes. The 1st trip DTC P0171 or P0174 should be detected at this stage, if a malfunction exists. If so, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S14494639192004120900000) .
7. If it is difficult to start engine at step 6, the fuel injection system has a malfunction, too.
8. Crank engine while depressing accelerator pedal. If engine starts, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S14494639192004120900000) . If engine does not start, check exhaust and intake air leak visually.

WITH GST

Scheme 180

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Disconnect mass air flow sensor harness connector. Then restart and run engine for at least 5 seconds at idle speed.
4. Stop engine and reconnect mass air flow sensor harness connector.
5. Select MODE 3 with GST. Make sure DTC P0102 is detected.
6. Select MODE 4 with GST and erase the DTC P0102.
7. Start engine again and let it idle for at least 10 minutes.
8. Select MODE 7 with GST. The 1st trip DTC P0171 or P0174 should be detected at this stage, if a malfunction exists. If so, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S14494639192004120900000) .
9. If it is difficult to start engine at step 7, the fuel injection system has a malfunction.
10. Crank engine while depressing accelerator pedal. If engine starts, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S14494639192004120900000) . If engine does not start, check exhaust and intake air leak visually.

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the A/F sensors 1. The ECM calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.

In case the amount of the compensation value is extremely large (the actual mixture ratio is too rich.), the ECM judges the condition as the fuel injection system malfunction and lights up the MIL (2 trip detection logic).

Scheme 181

Scheme 182

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.

With CONSULT-II

Scheme 183

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-II.
4. Clear the self-learning control coefficient by touching "CLEAR".
5. Select "DATA MONITOR" mode with CONSULT-II.
6. Start engine again and let it idle for at least 10 minutes. The 1st trip DTC P0172, P0175 should be detected at this stage, if a malfunction exists. If so, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S18133430362004120900000) .
7. If it is difficult to start engine at step 6, the fuel injection system has a malfunction, too.
8. Crank engine while depressing accelerator pedal. If engine starts, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S18133430362004120900000) . If engine does not start, remove spark plugs and check for fouling, etc.

WITH GST

Scheme 184

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Disconnect mass air flow sensor harness connector. Then restart and run engine for at least 5 seconds at idle speed.
4. Stop engine and reconnect mass air flow sensor harness connector.
5. Select MODE 3 with GST. Make sure DTC P0102 is detected.
6. Select MODE 4 with GST and erase the DTC P0102.
7. Start engine again and let it idle for at least 10 minutes.
8. Select MODE 7 with GST. The 1st trip DTC P0172 or P0175 should be detected at this stage, if a malfunction exists. If so, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S18133430362004120900000) .
9. If it is difficult to start engine at step 7, the fuel injection system has a malfunction.
10. Crank engine while depressing accelerator pedal. If engine starts, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S18133430362004120900000) . If engine does not start, remove spark plugs and check for fouling, etc.

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.

With CONSULT-II

Scheme 185

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Wait at least 10 seconds. If the result is NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S38666298912004120900000) . If the result is OK, go to following step.
4. Check "COOLAN TEMP/S" value. If "COOLAN TEMP/S" is less than 60°C (140°F), the result will be OK. If "COOLAN TEMP/S" is above 60°C (140°F), go to the following step.
5. Cool engine down until "COOLAN TEMP/S" is less than 60°C (140°F).
6. Wait at least 10 seconds.
7. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S38666298912004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

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.

With CONSULT-II

Scheme 186

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S17415270982004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

These self-diagnoses have the one trip detection logic.

Scheme 187

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

Scheme 188

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.

Before performing the following procedure, confirm that battery voltage is more than 8V at idle.

With CONSULT-II

Scheme 189

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S27286776622004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crankshaft position (CKP) sensor (POS) signal to vary, ECM can determine that a misfire is occurring.

Scheme 190

The misfire detection logic consists of the following two conditions.

Scheme 191

1. One Trip Detection Logic (Three Way Catalyst Damage) On the first trip that a misfire condition occurs that can damage the three way catalyst (TWC) due to overheating, the MIL will blink. When a misfire condition occurs, the ECM monitors the CKP sensor signal every 200 engine revolutions for a change. When the misfire condition decreases to a level that will not damage the TWC, the MIL will turn off. If another misfire condition occurs that can damage the TWC on a second trip, the MIL will blink. When the misfire condition decreases to a level that will not damage the TWC, the MIL will remain on. If another misfire condition occurs that can damage the TWC, the MIL will begin to blink again.
2. Two Trip Detection Logic (Exhaust quality deterioration) For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MIL will only light when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP sensor signal every 1,000 engine revolutions. A misfire malfunction can be detected on any one cylinder or on multiple cylinders.

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.

With CONSULT-II

Scheme 192

1. Turn ignition switch ON, and select "DATA MONITOR" mode with CONSULT-II.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Restart engine and let it idle for about 15 minutes.
5. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S36460857422004120900000) .

Note. If 1st trip DTC is not detected during above procedure, performing the following procedure is advised.

Scheme 193

Scheme 194

1. Turn ignition switch OFF and wait at least 10 seconds.
2. Start engine and drive the vehicle under the similar conditions to (1st trip) Freeze Frame Data for a certain time. Refer to the table below. Hold the accelerator pedal as steady as possible. The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following conditions should be satisfied at the same time. The time to driving varies according to the engine speed in the freeze frame data.

WITH GST

Follow the procedure "WITH CONSULT-II" above.

Scheme 195

Scheme 196

Scheme 197

Scheme 198

Scheme 199

Scheme 200

Scheme 201

Scheme 202

Scheme 203

1. CHECK FOR INTAKE AIR LEAK AND PCV HOSE Start engine and run it at idle speed. Listen for the sound of the intake air leak. Check PCV hose connection. OK or NG OK: GO TO 2. NG: Discover air leak location and repair.
2. CHECK FOR EXHAUST SYSTEM CLOGGING Stop engine and visually check exhaust tube, three way catalyst and muffler for dents. OK or NG OK: GO TO 3. NG: Repair or replace it.
3. PERFORM POWER BALANCE TEST With CONSULT-II Perform "POWER BALANCE" in "ACTIVE TEST" mode. Is there any cylinder which does not produce a momentary engine speed drop? Without CONSULT-II When disconnecting each injector harness connector one at a time, is there any cylinder which does not produce a momentary engine speed drop? Yes or No Yes: GO TO 4. No: GO TO 7.
4. CHECK INJECTOR Does each injector make an operating sound at idle? Yes or No Yes: GO TO 5. No: Check injector(s) and circuit(s). Refer to «INJECTOR CIRCUIT»(ref-169809-S02167552732004121600000) in SYSTEM & COMPONENT TESTING - TITAN article.
5. CHECK IGNITION SPARK Turn ignition switch OFF. Remove ignition coil assembly from rocker cover. Remove spark plug from ignition coil assembly. Connect a known-good spark plug to the ignition coil. 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 6. NG: Check ignition coil, power transistor and their circuits. Refer to «IGNITION SIGNAL»(ref-169809-S09326610482004121600000) in SYSTEM & COMPONENT TESTING - TITAN article.
6. CHECK SPARK PLUGS Remove the spark plugs and check for fouling, etc. OK or NG OK: GO TO 7. NG: Repair or replace spark plug(s) with standard type one(s). For spark plug type, refer to «SPARK PLUG TYPES»(ref-169472-S25705540072006072000000) table. . Spark Plug Types Make NGK Standard type PLFR5A-11 Hot type PLFR4A-11 Cold type PLFR6A-11 Gap (nominal) 1.1 mm (0.043 in)
7. CHECK COMPRESSION PRESSURE Check compression pressure. Refer to «CHECKING COMPRESSION PRESSURE»(ref-163594-S17725237102004120700000) in ENGINE MECHANICAL - TITAN - 5.6L article. Standard: 1,520 kPa (15.5 kg/cm 2 , 200 psi)/200 RPM Minimum: 1,324 kPa (13.5 kg/cm 2 , 192 psi)/200 RPM Difference between each cylinder: 98 kPa (1.0 kg/cm 2 , 14 psi)/200 RPM OK or NG OK: GO TO 8. NG: Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
8. CHECK FUEL PRESSURE Install all removed parts. 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 idle: Approx. 350 kPa (3.57 kg/cm 2 , 51 psi) OK or NG OK: GO TO 10. NG: GO TO 9.
9. 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.
10. CHECK IGNITION TIMING Check the following items. Refer to «BASIC INSPECTION»(ref-169472-S09551101142004120900000) . OK or NG OK: GO TO 11. NG: Follow the «BASIC INSPECTION»(ref-169472-S09551101142004120900000) .
11. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Turn ignition switch OFF. Disconnect A/F sensor 1 harness connector. Disconnect ECM harness connector. Check harness continuity between the following terminals. 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 12. NG: Repair open circuit or short to ground or short to power in harness or connectors between ECM and A/F sensor 1.
12. CHECK A/F SENSOR 1 HEATER (BANK 1)/(BANK 2) Refer to «COMPONENT INSPECTION»(ref-169472-S19166028532004120900000) . OK or NG OK: GO TO 13. NG: Replace (malfunctioning) A/F sensor 1.
13. CHECK MASS AIR FLOW SENSOR With CONSULT-II Check mass air flow sensor signal 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 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 14. 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) .
14. CHECK SYMPTOM MATRIX CHART Check items on the rough idle symptom in «SYMPTOM MATRIX CHART»(ref-169472-S04914791052004120900000) . OK or NG OK: GO TO 15. NG: Repair or replace.
15. ERASE THE 1ST TRIP DTC Some tests may cause a 1st trip DTC to be set. Erase the 1st trip DTC from the ECM memory after performing the tests. Refer to «HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION»(ref-169472-S16933045562004120900000) . GO TO 16.
16. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

The MIL will not light up for these diagnoses.

Scheme 204

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.

Before performing the following procedure, confirm that battery voltage is more than 10V at idle.

With CONSULT-II

Scheme 205

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
2. Start engine and run it for at least 5 seconds at idle speed.
3. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S21451905912004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

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.

Before performing the following procedure, confirm that battery voltage is more than 10.5V with ignition switch ON.

With CONSULT-II

Scheme 206

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
2. Crank engine for at least 2 seconds and run it for at least 5 seconds at idle speed.
3. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S42284053552004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

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.

Before performing the following procedure, confirm that battery voltage is more than 10.5V with ignition switch ON.

With CONSULT-II

Scheme 207

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Crank engine for at least 2 seconds and run it for at least 5 seconds at idle speed.
4. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S17751976912004120900000) . If 1st trip DTC is not detected, go to next step.
5. Maintaining engine speed at more than 800 RPM for at least 5 seconds.
6. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S17751976912004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

The ECM monitors the switching frequency ratio of air fuel sensor (A/F) sensor 1 and heated oxygen sensor 2.

A three way catalyst (manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2.

As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase.

When the frequency ratio of air fuel ratio (A/F) sensor 1 and heated oxygen sensor 2 approaches a specified limit value, the three way catalyst (manifold) malfunction is diagnosed.

Scheme 208

Scheme 209

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.

With CONSULT-II

Do not hold engine speed for more than the specified minutes below.

Scheme 210

Scheme 211

Scheme 212

Scheme 213

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. Make sure that "COOLAN TEMP/S" indicates more than 70°C (158°F). If not, warm up engine and go to next step when "COOLAN TEMP/S" indication reaches to 70°C (158°F).
7. Open engine hood.
8. Select "DTC & SRT CONFIRMATION" then "SRT WORK SUPPORT" mode with CONSULT-II.
9. Rev engine up to 2,000 to 3,000 RPM and hold it for 3 consecutive minutes then release the accelerator pedal completely. If "INCMP" of "CATALYST" changed to "CMPLT", go to step 12.
10. Wait 5 seconds at idle.
11. Rev engine up to 2,000 to 3,000 RPM and maintain it until "INCMP" of "CATALYST" changes to "CMPLT" (It will take approximately 5 minutes). If not "CMPLT", stop engine and cool it down to less than 70°C (158°F) and then retest from step 1 .
12. Select "SELF-DIAG RESULTS" mode with CONSULT-II.
13. Confirm that the 1st trip DTC is not detected. If the 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S40465481952004120900000) .

Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow are adequate. If not, a malfunction is determined.

Scheme 214

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.

Always perform test at a temperature of 5°C (41°F) or more.

With CONSULT-II

Scheme 215

Scheme 216

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and let it idle for at least 70 seconds.
4. Select "PURG FLOW P0441" of "EVAPORATIVE SYSTEM" in "DTC CONFIRMATION" mode with CONSULT-II.
5. Touch "START". If "COMPLETED" is displayed, go to step 7.
6. When the following conditions are met, "TESTING" will be displayed on the CONSULT-II screen. Maintain the conditions continuously until "TESTING" changes to "COMPLETED". (It will take at least 35 seconds.) If "TESTING" is not changed for a long time, retry from step 2.
7. Make sure that "OK" is displayed after touching "SELF-DIAG RESULTS". If "NG" is displayed, refer to «DIAGNOSTIC PROCEDURE»(ref-169472-S25118166282004120900000) .

This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum.

If pressure does not increase, the ECM will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve, under the following "Vacuum test" conditions.

The EVAP canister vent control valve is closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve will then be opened to depressurize the EVAP purge line using intake manifold vacuum. After this occurs, the EVAP canister purge volume control solenoid valve will be closed.

Scheme 217

Scheme 218

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.

1. Perform "DTC WORK SUPPORT" when the fuel level is between 1/4 and 3/4 full, and vehicle is placed on flat level surface.
2. Always perform test at a temperature of 0 to 30°C (32 to 86°F).

With CONSULT-II

Scheme 219

Scheme 220

1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
4. Make sure that the following conditions are met. COOLAN TEMP/S: 0 - 70°C (32 - 158°F). INT/A TEMP SE: 0 - 30°C (32 - 86°F)
5. Select "EVAP SML LEAK P0442/P1442" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode with CONSULT-II. Follow the instruction displayed. NOTE: If the engine speed cannot be maintained within the range displayed on the CONSULT-II screen, go to «BASIC INSPECTION»(ref-169472-S09551101142004120900000) .
6. Make sure that "OK" is displayed. If "NG" is displayed, refer to «DIAGNOSTIC PROCEDURE»(ref-169472-S28973935402004120900000) . NOTE: Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve properly.

WITH GST

Note. Be sure to read the explanation of DRIVING PATTERN before driving vehicle.

1. Start engine.
2. Drive vehicle according to «DRIVING PATTERN»(ref-169472-S28241685032004120900000) .
3. Stop vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
5. Select MODE 7 with GST. If P0442 is displayed on the screen, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S28973935402004120900000) . If P0441 is displayed on the screen, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S28973935402004120900000) .

Scheme 221

Scheme 222

Scheme 223

Scheme 224

Scheme 225

Scheme 226

Scheme 227

Scheme 228

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: Never 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. 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 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: Never 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

Scheme 229

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.

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.

Before performing the following procedure, confirm battery voltage is more than 11V at idle.

With CONSULT-II

Scheme 230

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for at least 13 seconds.
4. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S04378174762004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

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.

Before performing the following procedure, confirm battery voltage is more than 11V at idle.

With CONSULT-II

Scheme 231

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and wait at least 8 seconds.
4. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S02733343652004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

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.

With CONSULT-II

Scheme 232

1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and wait at least 40 seconds. NOTE: Do not depress accelerator pedal even slightly. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S38452219842004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

Scheme 233

Scheme 234

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 EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER Disconnect EVAP control system pressure sensor harness connector. Check sensor harness connector for water. Water should not exist. OK or NG OK: GO TO 3. NG: Repair or replace harness connector.
3. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR Refer to «COMPONENT INSPECTION»(ref-169472-S32685634342004120900000) . OK or NG OK: GO TO 4. NG: Replace EVAP control system pressure sensor.
4. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . For wiring diagram, refer to «WIRING DIAGRAM»(ref-169472-S33222375202004120900000) . INSPECTION END

Scheme 235

Scheme 236

1. Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister. Always replace O-ring with a NEW one.
2. Install a vacuum pump to EVAP control system pressure sensor.
3. Turn ignition switch ON and check output voltage between ECM terminal 32 and ground under the following conditions. CAUTION: Always calibrate the vacuum pump gauge when using it. Do not apply below -93.3 kPa (-700 mmHg, -27.56 inHg) or pressure over 101.3 kPa (760 mmHg, 29.92 inHg).
4. If NG, replace EVAP control system pressure sensor.

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.

Always perform test at a temperature of 5°C (41°F) or more.

WITH CONSULT-II

Scheme 237

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Select "DATA MONITOR" mode with CONSULT-II.
5. Make sure that "FUEL T/TEMP SE" is more than 0°C (32°F).
6. Start engine and wait at least 20 seconds. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S22042729892004120900000) .

WITH GST

Scheme 238

1. Start engine and warm it up to normal operating temperature.
2. Check that voltage between ECM terminal 107 (Fuel tank temperature sensor signal) and ground is less than 4.2V.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and wait at least 20 seconds.
5. Select MODE 7 with GST. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S22042729892004120900000) .

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.

Always perform test at a temperature of 5°C (41°F) or more.

WITH CONSULT-II

Scheme 239

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Select "DATA MONITOR" mode with CONSULT-II.
5. Make sure that "FUEL T/TEMP SE" is more than 0°C (32°F).
6. Start engine and wait at least 20 seconds.
7. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S31518441362004120900000) .

WITH GST

Scheme 240

1. Start engine and warm it up to normal operating temperature.
2. Check that voltage between ECM terminal 107 (Fuel tank temperature sensor signal) and ground is less than 4.2V.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and wait at least 20 seconds.
5. Select MODE 7 with GST. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S31518441362004120900000) .

This diagnosis detects a very large leak (fuel filler cap fell off etc.) in EVAP system between the fuel tank and EVAP canister purge volume control solenoid valve.

Scheme 241

Scheme 242

Note. Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve properly. If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

1. Perform "DTC WORK SUPPORT" when the fuel level is between 1/4 and 3/4 full, and vehicle is placed on flat level surface.
2. Open engine hood before conducting the following procedures.

WITH CONSULT-II

Scheme 243

Scheme 244

1. Tighten fuel filler cap securely until ratcheting sound is heard.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
5. Make sure that the following conditions are met. COOLAN TEMP/S: 0 - 70°C (32 - 158°F) INT/A TEMP SE: 0 - 60°C (32 - 140°F)
6. Select "EVAP SML LEAK P0442/P1442" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode with CONSULT-II. Follow the instruction displayed. NOTE: If the engine speed cannot be maintained within the range displayed on the CONSULT-II screen, go to «BASIC INSPECTION»(ref-169472-S09551101142004120900000) .
7. Make sure that "OK" is displayed. If "NG" is displayed, select "SELF-DIAG RESULTS" mode and make sure that "EVAP GROSS LEAK [P0455]" is displayed. If it is displayed, refer to «DIAGNOSTIC PROCEDURE»(ref-169472-S02344079022004120900000) If P0442 is displayed, perform Diagnostic Procedure for DTC P0442 «DIAGNOSTIC PROCEDURE»(ref-169472-S28973935402004120900000) .

WITH GST

Note. Be sure to read the explanation of DRIVING PATTERN before driving vehicle.

1. Start engine.
2. Drive vehicle according to «DRIVING PATTERN»(ref-169472-S28241685032004120900000) .
3. Stop vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
5. Select MODE 7 with GST. If P0455 is displayed on the screen, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S02344079022004120900000) . If P0442 is displayed on the screen, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S28973935402004120900000) . If P0441 is displayed on the screen, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25118166282004120900000) .

Scheme 245

Scheme 246

Scheme 247

Scheme 248

Scheme 249

Scheme 250

Scheme 251

Scheme 252

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. CHECK EVAP PURGE LINE Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks, improper connection or disconnection. Refer to «EVAPORATIVE EMISSION LINE DRAWING»(ref-169809-S38786464232004121600000) in SYSTEM & COMPONENT TESTING - TITAN article. OK or NG OK: GO TO 6. NG: Repair or reconnect the hose.
6. CLEAN EVAP PURGE LINE Clean EVAP purge line (pipe and rubber tube) using air blower. GO TO 7.
7. CHECK EVAP CANISTER VENT CONTROL VALVE Check the following. EVAP canister vent control valve is installed properly. «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 8. NG: Repair or replace EVAP canister vent control valve and O-ring.
8. INSTALL THE PRESSURE PUMP To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port securely. NOTE: Improper installation of the EVAP service port adapter to the EVAP service port may cause leaking. With CONSULT-II GO TO 9. Without CONSULT-II GO TO 10.
9. 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 11. NG: Repair or replace.
10. 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 12. NG: Repair or replace.
11. 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 14. NG: GO TO 13.
12. 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 15. NG: GO TO 13.
13. 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 (With CONSULT-II): GO TO 14. OK (Without CONSULT-II): GO TO 15. NG: Repair or reconnect the hose.
14. 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 16. NG: GO TO 15.
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/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 19. NG: Repair or replace hoses and tubes.
19. 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 20. NG: Repair or replace hose, tube or filler neck tube.
20. 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 21. NG: Replace refueling EVAP vapor cut valve with fuel tank.
21. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

This diagnosis detects very small leaks in the EVAP line between fuel tank and EVAP canister purge volume control solenoid valve, using the intake manifold vacuum in the same way as conventional EVAP small leak diagnosis.

If ECM judges a leak which corresponds to a very small leak, the very small leak P0456 will be detected.

If ECM judges a leak equivalent to a small leak, EVAP small leak P0442 will be detected.

If ECM judges there are no leaks, the diagnosis will be OK.

Scheme 253

Scheme 254

Note. If DTC P0456 is displayed with P0442, first perform trouble diagnosis for DTC P0456. After repair, make sure that the hoses and clips are installed properly. If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

1. Open engine hood before conducting following procedure.
2. If any of following conditions are met just before the DTC confirmation procedure, leave the vehicle for more than 1 hour. Fuel filler cap is removed. Fuel is refilled or drained. EVAP component parts is/are removed.
3. Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

WITH CONSULT-II

Scheme 255

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
2. Make sure the following conditions are met. FUEL LEVEL SE: 0.25 - 1.4V COOLAN TEMP/S: 0 - 32 °C (32 - 90°F) FUEL T/TMP SE: 0 - 35 °C (32 - 95°F) INT A/TEMP SE: More than 0°C (32°F) If NG, turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle) or refilling/draining fuel until the output voltage condition of the "FUEL LEVEL SE" meets within the range above and leave the vehicle for more than 1 hour. Then start from step 1).
3. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
4. Select "EVAP V/S LEAK P0456/P1456" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode with CONSULT-II. Follow the instruction displayed.
5. Make sure that "OK" is displayed. If "NG" is displayed, refer to «DIAGNOSTIC PROCEDURE»(ref-169472-S27100746522004120900000) .

Note. If the engine speed cannot be maintained within the range displayed on CONSULT-II screen, go to BASIC INSPECTION . Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve properly.

Note. If DTC P0460 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to DTC U1000, U1001 CAN COMMUNICATION LINE .

When the vehicle is parked, naturally the fuel level in the fuel tank is stable. It means that output signal of the fuel level sensor does not change. If ECM senses sloshing signal from the sensor, fuel level sensor malfunction is detected.

Scheme 256

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.

WITH CONSULT-II

Scheme 257

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and wait maximum of 2 consecutive minutes.
4. If 1st trip DTC is detected, go to «Diagnostic Procedure»(ref-169472-S02818319932004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

1. CHECK DTC WITH COMBINATION METER Refer to «COMBINATION METERS»(ref-170082-S30950297692005010600000) in GAUGES & INSTRUMENT PANEL - TITAN article in ACCESSORIES & BODY, CAB. . OK or NG OK: GO TO 2. NG: GO to «FUEL LEVEL SENSOR UNIT INSPECTION»(ref-170082-S00092696412005010600000) in GAUGES & INSTRUMENT PANEL - TITAN article in ACCESSORIES & BODY, CAB. .
2. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

Note. If DTC P0461 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to DTC U1000, U1001 CAN COMMUNICATION LINE .

Driving long distances naturally affect fuel gauge level.

This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has been driven.

Scheme 258

Before starting overall function check, preparation of draining fuel and refilling fuel is required.

WITH CONSULT-II

Note. Start from step 10, if it is possible to confirm that the fuel cannot be drained by 30 l (7-7/8 US gal, 6-5/8 Imp gal) in advance.

1. Prepare a fuel container and a spare hose.
2. Release fuel pressure from fuel line. Refer to «FUEL PRESSURE RELEASE»(ref-169712-S33627982672004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article.
3. Remove the fuel feed hose on the fuel level sensor unit.
4. Connect a spare fuel hose where the fuel feed hose was removed.
5. Turn ignition switch OFF and wait at least 10 seconds then turn ON.
6. Select "FUEL LEVEL SE" in "DATA MONITOR" mode with CONSULT-II.
7. Check "FUEL LEVEL SE" output voltage and note it.
8. Select "FUEL PUMP" in "ACTIVE TEST" mode with CONSULT-II.
9. Touch "ON" and drain fuel approximately 30 l (7-7/8 US gal, 6-5/8 Imp gal) and stop it.
10. Check "FUEL LEVEL SE" output voltage and note it.
11. Fill fuel into the fuel tank for 30 l (7-7/8 US gal, 6-5/8 Imp gal).
12. Check "FUEL LEVEL SE" output voltage and note it.
13. Confirm whether the voltage changes more than 0.03V during step 7 to 10 and 10 to 12. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25211150382004120900000) .

WITH GST

Note. Start from step 8, if it is possible to confirm that the fuel cannot be drained by 30 l (7-7/8 US gal, 6-5/8 Imp gal) in advance.

Scheme 259

1. Prepare a fuel container and a spare hose.
2. Release fuel pressure from fuel line. Refer to «FUEL PRESSURE RELEASE»(ref-169712-S33627982672004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article.
3. Remove the fuel feed hose on the fuel level sensor unit.
4. Connect a spare fuel hose where the fuel feed hose was removed.
5. Turn ignition switch ON.
6. Drain fuel by 30 l (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.
7. Confirm that the fuel gauge indication varies.
8. Fill fuel into the fuel tank for 30 l (7-7/8 US gal, 6-5/8 Imp gal).
9. Confirm that the fuel gauge indication varies.
10. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25211150382004120900000) .

1. CHECK DTC WITH COMBINATION METER Refer to «COMBINATION METERS»(ref-170082-S30950297692005010600000) in GAUGES & INSTRUMENT PANEL - TITAN article in ACCESSORIES & BODY, CAB. . OK or NG OK: GO TO 2. NG: GO to «FUEL LEVEL SENSOR UNIT INSPECTION»(ref-170082-S00092696412005010600000) in GAUGES & INSTRUMENT PANEL - TITAN article in ACCESSORIES & BODY, CAB. .
2. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

Note. If DTC P0462 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to DTC U1000, U1001 CAN COMMUNICATION LINE .

This diagnosis indicates the former, to detect open or short circuit malfunction.

Scheme 260

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.

Before performing the following procedure, confirm that battery voltage is more than 11V at ignition switch ON.

WITH CONSULT-II

Scheme 261

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S02892623592004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

1. CHECK DTC WITH COMBINATION METER Refer to «COMBINATION METERS»(ref-170082-S30950297692005010600000) in GAUGES & INSTRUMENT PANEL - TITAN article in ACCESSORIES & BODY, CAB. . OK or NG OK: GO TO 2. NG: GO to «FUEL LEVEL SENSOR UNIT INSPECTION»(ref-170082-S00092696412005010600000) in GAUGES & INSTRUMENT PANEL - TITAN article in ACCESSORIES & BODY, CAB. .
2. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . INSPECTION END

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.

Steps 1 and 2 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.

WITH CONSULT-II

Scheme 262

Scheme 263

1. Start engine (VDC switch OFF).
2. Read "VHCL SPEED SE" in "DATA MONITOR" mode with CONSULT-II. The vehicle speed on CONSULT-II should exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S38325137172004120900000) . If OK, go to following step.
3. Select "DATA MONITOR" mode with CONSULT-II.
4. Warm engine up to normal operating temperature.
5. Maintain the following conditions for at least 60 consecutive seconds.
6. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S38325137172004120900000) .

1. CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) Refer to «TROUBLE DIAGNOSIS»(ref-215106-S23836399542006010900000) for ABS, or refer to for ABS/TCS/VDC «TROUBLE DIAGNOSIS»(ref-215107-S18746142642006010900000) in ANTI-LOCK (ABS) - TITAN article. OK or NG OK: GO TO 2. NG: Repair or replace.
2. CHECK DTC WITH COMBINATION METER Refer to «COMBINATION METERS»(ref-170082-S30950297692005010600000) in GAUGES & INSTRUMENT PANEL - TITAN article in ACCESSORIES & BODY, CAB. . INSPECTION END

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. If the target idle speed is out of the specified value, perform IDLE AIR VOLUME LEARNING in BASIC DIAGNOSTIC PROCEDURES - TITAN article before conducting DTC Confirmation Procedure. For the target idle speed, refer to the SERVICE DATA AND SPECIFICATIONS (SDS) in SYSTEM & COMPONENT TESTING - TITAN article.

1. Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
2. Always perform the test at a temperature above --10°C (14°F).

WITH CONSULT-II

Scheme 264

1. Open engine hood.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON again and select "DATA MONITOR" mode with CONSULT-II.
5. Start engine and run it for at least 1 minute at idle speed.
6. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S42512558212004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

1. CHECK INTAKE AIR LEAK Start engine and let it idle. Listen for an intake air leak after the mass air flow sensor. OK or NG OK: GO TO 2. NG: Discover air leak location and repair.
2. REPLACE ECM Stop engine. Replace ECM. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to «ECM RE-COMMUNICATING FUNCTION»(ref-170166-S19595175762005010500000) in POWER LOCKS, REMOTE KEYLESS ENTRY & ANTI-THEFT SYSTEMS - TITAN article in ACCESSORIES & BODY, CAB. . Perform «ACCELERATOR PEDAL RELEASED POSITION LEARNING»(ref-169712-S24333390702004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. 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

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. If the target idle speed is out of the specified value, perform IDLE AIR VOLUME LEARNING in BASIC DIAGNOSTIC PROCEDURES - TITAN article before conducting DTC Confirmation Procedure. For the target idle speed, refer to SERVICE DATA AND SPECIFICATIONS (SDS) in SYSTEM & COMPONENT TESTING - TITAN article. .

1. Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
2. Always perform the test at a temperature above --10°C (14°F).

WITH CONSULT-II

Scheme 265

1. Open engine hood.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON again and select "DATA MONITOR" mode with CONSULT-II.
5. Start engine and run it for at least 1 minute at idle speed.
6. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S38314370712004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

1. CHECK PCV HOSE CONNECTION Confirm that PCV hose is connected correctly. OK or NG OK: GO TO 2. NG: Repair or replace.
2. CHECK INTAKE AIR LEAK Start engine and let it idle. Listen for an intake air leak after the mass air flow sensor. OK or NG OK: GO TO 3. NG: Discover air leak location and repair.
3. REPLACE ECM Stop engine. Replace ECM. Perform initialization of NVIS(NATS) system and registration of all NVIS(NATS) ignition key IDs. Refer to «ECM RE-COMMUNICATING FUNCTION»(ref-170166-S19595175762005010500000) in POWER LOCKS, REMOTE KEYLESS ENTRY & ANTI-THEFT SYSTEMS - TITAN article in ACCESSORIES & BODY, CAB. . Perform «ACCELERATOR PEDAL RELEASED POSITION LEARNING»(ref-169712-S24333390702004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. 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

The MIL will not light up for this diagnosis.

Note. If DTC P0550 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229. Refer to DTC P1229 SENSOR POWER SUPPLY .

Scheme 266

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.

WITH CONSULT-II

Scheme 267

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for at least 5 seconds.
4. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S42593385432004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

This self-diagnosis has one or two trip detection logic.

Scheme 268

ECM enters fail-safe mode when the malfunction A is detected.

Scheme 269

Perform PROCEDURE FOR MALFUNCTION A first. If the 1st trip DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B. If there is no malfunction on PROCEDURE FOR MALFUNCTION B, perform PROCEDURE FOR MALFUNCTION C.

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.

1. INSPECTION START With CONSULT-II Turn ignition switch ON. Select "SELF DIAG RESULTS" mode with CONSULT-II. Touch "ERASE". Perform DTC Confirmation Procedure. See «DTC CONFIRMATION PROCEDURE»(ref-169472-S32774768262004120900000) . Is the 1st trip DTC P0605 displayed again? With GST Turn ignition switch ON. Select MODE 4 with GST. Touch "ERASE". Perform DTC Confirmation Procedure. See «DTC CONFIRMATION PROCEDURE»(ref-169472-S32774768262004120900000) . Is the 1st trip DTC P0605 displayed again? Yes or No Yes: GO TO 2. NO: INSPECTION END
2. REPLACE ECM Replace ECM. Perform initialization of NVIS(NATS) system and registration of all NVIS(NATS) ignition key IDs. Refer to «ECM RE-COMMUNICATING FUNCTION»(ref-170166-S19595175762005010500000) in POWER LOCKS, REMOTE KEYLESS ENTRY & ANTI-THEFT SYSTEMS - TITAN article in ACCESSORIES & BODY, CAB. . Perform «ACCELERATOR PEDAL RELEASED POSITION LEARNING»(ref-169712-S24333390702004121500000) in BASIC DIAGNOSTIC PROCEDURES - TITAN article. 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

Scheme 270

The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating condition to keep the temperature of A/F sensor 1 element at the specified range.

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.

Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at idle.

WITH CONSULT-II

Scheme 271

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
2. Start engine and let it idle for at least 10 seconds.
3. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S16896433632004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

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.

WITH CONSULT-II

Scheme 272

1. Turn ignition switch ON and wait at least 1 second.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
5. Repeat steps 3 and 4 for 4 times.
6. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S05895886022004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

This self-diagnosis has one trip detection logic.

Scheme 273

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

Scheme 274

Note. Perform Procedure For Malfunction A And B first. If the DTC cannot be confirmed, perform Procedure For Malfunction C . If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

This self-diagnosis has the one trip detection logic.

Scheme 275

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

Scheme 276

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.

Before performing the following procedure, confirm that battery voltage is more than 11V when engine is running.

WITH CONSULT-II

Scheme 277

1. Turn ignition switch ON and wait at least 2 seconds.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for 5 seconds.
4. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S21070031702004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

These self-diagnoses have the one trip detection logic.

Scheme 278

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

Scheme 279

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.

Before performing the following procedure, confirm that battery voltage is more than 8V when engine is running.

With CONSULT-II

1. Turn ignition switch ON and wait at least 1 second.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S06605077192004120900000) .

With GST

Follow the procedure "With CONSULT-II" above.

Procedure For DTC P1126

With CONSULT-II

1. Turn ignition switch ON and wait at least 2 seconds.
2. Select "DATA MONITOR"" mode with CONSULT-II.
3. Start engine and let it idle for 5 seconds.
4. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S06605077192004120900000) .

With GST

Follow the procedure "With CONSULT-II" above.

This self-diagnosis has the one trip detection logic.

Scheme 280

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

Scheme 281

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.

WITH CONSULT-II

Scheme 282

1. Turn ignition switch ON and wait at least 2 seconds.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for 5 seconds.
4. If DTC is detected, go to «Diagnostic Procedure»(ref-169472-S21935929372004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the minimum voltage of sensor is sufficiently low during the various driving condition such as fuel-cut

Scheme 283

Scheme 284

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.

WITH CONSULT-II

For better results, perform "DTC WORK SUPPORT" at a temperature of 0 to 30°C (32 to 86 °F).

Scheme 285

Scheme 286

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. Make sure that "COOLAN TEMP/S" indicates more than 70°C (158°F). If not, warm up engine and go to next step when "COOLAN TEMP/S" indication reaches to 70°C (158°F).
7. Open engine hood.
8. Select "HO2S2 (B1) P1146" or "HO2S2 (B2) P1166" of "HO2S2" in "DTC WORK SUPPORT" mode with CONSULT-II.
9. Start engine and following the instruction of CONSULT-II.
10. Make sure that "OK" is displayed after touching "SELF-DIAG RESULTS". If "NG" is displayed, refer to «DIAGNOSTIC PROCEDURE»(ref-169472-S09995548712004120900000) . If "CAN NOT BE DIAGNOSED" is displayed, perform the following. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle). Return to step 1 .

The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the maximum voltage of the sensor is sufficiently high during the various driving condition such as fuel-cut.

Scheme 287

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.

WITH CONSULT-II

For better results, perform "DTC WORK SUPPORT" at a temperature of 0 to 30 °C (32 to 86 °F).

Scheme 288

Scheme 289

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. Make sure that "COOLAN TEMP/S" indicates more than 70°C (158°F). If not, warm up engine and go to next step when "COOLAN TEMP/S" indication reaches to 70°C (158°F).
7. Open engine hood.
8. Select "HO2S2 (B1) P1147" or "HO2S2 (B2) P1167" of "HO2S2" in "DTC WORK SUPPORT" mode with CONSULT-II.
9. Start engine and following the instruction of CONSULT-II.
10. Make sure that "OK" is displayed after touching "SELF-DIAG RESULTS". If "NG" is displayed, refer to «DIAGNOSTIC PROCEDURE»(ref-169472-S26092763142004120900000) . If "CAN NOT BE DIAGNOSED" is displayed, perform the following. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle). Return to step 1 .

These self-diagnoses have the one trip detection logic.

Scheme 290

DTC P1148 or P1168 is displayed with another DTC for air fuel ratio (A/F) sensor 1.

Perform the trouble diagnosis for the corresponding DTC.

Freeze frame data is not stored in the ECM for this self-diagnosis. The MIL will not light up for this self-diagnosis.

Scheme 291

Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.

WITH CONSULT-II

Scheme 292

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for at least 60 seconds.
4. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S06770423502004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

Go to TROUBLE DIAGNOSIS in ANTI-LOCK (ABS) - TITAN article. .

Freeze frame data is not stored in the ECM for this self-diagnosis.

The MIL will not light up for this self-diagnosis.

Scheme 293

Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.

WITH CONSULT-II

Scheme 294

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for at least 10 seconds.
4. If a 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S14228579072004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

1. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) FUNCTION Refer to «TROUBLE DIAGNOSIS»(ref-215106-S23836399542006010900000) in ANTI-LOCK (ABS) - TITAN article.. . : INSPECTION END

If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will rise.

When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is indicated.

This self-diagnosis has the one trip detection logic.

Scheme 295

The MIL will not light up for this diagnosis.

Scheme 296

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.

Before performing the following procedure, confirm that battery voltage is more than 10V at idle.

WITH CONSULT-II

Scheme 297

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S06876135412004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

Scheme 298

1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY Turn ignition switch OFF. Remove the intake air duct. Check if 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

The MIL will not light up for this diagnosis.

Scheme 299

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.

Before performing the following procedure, confirm that battery voltage is more than 10V at idle.

WITH CONSULT-II

Scheme 300

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Repeat steps 3 and 4 for 32 times.
6. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S13543736432004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

Scheme 301

1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY Turn ignition switch OFF. Remove the intake air duct. Check if 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

This self-diagnosis has the one trip detection logic.

Scheme 302

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

Scheme 303

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.

Before performing the following procedure, confirm that battery voltage is more than 10V at idle.

WITH CONSULT-II

Scheme 304

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S37275547832004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal is not inordinately low.

Scheme 305

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.

Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.

WITH CONSULT-II

Scheme 306

Scheme 307

1. Start engine and warm it up to normal operating temperature.
2. Select "A/F SEN1 (B1)" or "A/F SEN1 (B2)" in "DATA MONITOR" mode with CONSULT-II.
3. Check "A/F SEN1 (B1)" or "A/F SEN1 (B2)" indication. If the indication is constantly approx. 0V, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S22353514772004120900000) . If the indication is not constantly approx. 0V, go to next step.
4. Turn ignition switch OFF, wait at least 10 seconds and then restart engine.
5. Drive and accelerate vehicle to more than 40 km/h (25 MPH) within 20 seconds after restarting engine.
6. Maintain the following conditions for about 20 consecutive seconds. NOTE: Keep the accelerator pedal as steady as possible during the cruising. If this procedure is not completed within 1 minute after restarting engine at step 4, return to step 4.
7. If 1st trip DTC is displayed, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S22353514772004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal is not inordinately high.

Scheme 308

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.

Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

WITH CONSULT-II

Scheme 309

Scheme 310

1. Start engine and warm it up to normal operating temperature.
2. Select "A/F SEN1 (B1)" or "A/F SEN1 (B2)" in "DATA MONITOR" mode with CONSULT-II.
3. Check "A/F SEN1 (B1)" or "A/F SEN1 (B2)" indication. If the indication is constantly approx. 5V, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S39774480532004120900000) . If the indication is not constantly approx. 5V, go to next step.
4. Turn ignition switch OFF, wait at least 10 seconds and then restart engine.
5. Drive and accelerate vehicle to more than 40 km/h (25 MPH) within 20 seconds after restarting engine.
6. Maintain the following conditions for about 20 consecutive seconds. NOTE: Keep the accelerator pedal as steady as possible during the cruising. If this procedure is not completed within 1 minute after restarting engine at step 4, return to step 4.
7. If 1st trip DTC is displayed, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S39774480532004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not to be shifted LEAN side or RICH side.

Scheme 311

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.

Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.

WITH CONSULT-II

Scheme 312

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-II.
4. Clear the self-learning coefficient by touching "CLEAR".
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Start engine and keep the engine speed between 3,500 and 4,000 RPM for 1 minute under no load.
7. Let engine idle for 1 minute.
8. Keep engine speed between 2,500 and 3,000 RPM for 20 minutes.
9. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S41838814112004120900000) .

WITH GST

Scheme 313

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Disconnect mass air flow sensor harness connector.
4. Start engine and let it idle for at least 5 seconds.
5. Stop engine and reconnect mass air flow sensor harness connector.
6. Select "MODE 3" with GST and make sure that DTC P0102 is detected.
7. Select "MODE 4" with GST and erase the DTC P0102.
8. Start engine and keep the engine speed between 3,500 and 4,000 RPM for 1 minute under no load.
9. Let engine idle for 1 minute.
10. Keep engine speed between 2,500 and 3,000 RPM for 20 minutes.
11. Select "MODE 7" with GST. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S41838814112004120900000) .

To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not to be shifted to the LEAN side or RICH side.

Scheme 314

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.

Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

WITH CONSULT-II

Scheme 315

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select "SELF-LEARNING CONT" in "WORK SUPPORT" mode with CONSULT-II.
4. Clear the self-learning coefficient by touching "CLEAR".
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Start engine and keep the engine speed between 3,500 and 4,000 RPM for 1 minute under no load.
7. Let engine idle for 1 minute.
8. Keep engine speed between 2,500 and 3,000 RPM for 20 minutes.
9. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S00919294452004120900000) .

WITH GST

Scheme 316

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Disconnect mass air flow sensor harness connector.
4. Start engine and let it idle for at least 5 seconds.
5. Stop engine and reconnect mass air flow sensor harness connector.
6. Select "MODE 3" with GST and make sure that DTC P0102 is detected.
7. Select "MODE 4" with GST and erase the DTC P0102.
8. Start engine and keep the engine speed between 3,500 and 4,000 RPM for 1 minute under no load.
9. Let engine idle for 1 minute.
10. Keep engine speed between 2,500 and 3,000 RPM for 20 minutes.
11. Select "MODE 7" with GST. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S00919294452004120900000) .

To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal fluctuates according to fuel feedback control.

Scheme 317

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.

Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

WITH CONSULT-II

Scheme 318

Scheme 319

Scheme 320

Scheme 321

1. Start engine and warm it up to normal operating temperature.
2. Select "A/F SEN1 (B1)" or "A/F SEN1 (B2)" in "DATA MONITOR" mode with CONSULT-II.
3. Check "A/F SEN1 (B1)" or "A/F SEN1 (B2)" indication. If the indication is constantly approx. 1.5V and does not fluctuates, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S05047325282004120900000) . If the indication fluctuates around 1.5V, go to next step.
4. Select "A/F SEN1 (B1) P1276" or "A/F SEN1 (B2) P1286" of "A/F SEN1" in "DTC WORK SUPPORT" mode with CONSULT-II.
5. Touch "START".
6. When the following conditions are met, "TESTING" will be displayed on the CONSULT-II screen. If "TESTING" is not displayed after 20 seconds, retry from step 2.
7. Release accelerator pedal fully. NOTE: Never apply brake during releasing the accelerator pedal.
8. Make sure that "TESTING" changes to "COMPLETED". If "TESTING" changed to "OUT OF CONDITION", retry from step 6 .
9. Make sure that "OK" is displayed after touching "SELF-DIAG RESULT". If "NG" is displayed, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S05047325282004120900000) .

To judge the malfunction of A/F sensor 1, this diagnosis measures response time of the A/F signal computed by ECM from the A/F sensor 1 signal. The time is compensated by engine operating (speed and load), fuel feedback control constant, and the A/F sensor 1 temperature index. Judgment is based on whether the compensated time (the A/F signal cycling time index) is inordinately long or not.

Scheme 322

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.

Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

WITH CONSULT-II

Scheme 323

Scheme 324

Scheme 325

1. Start engine and warm it up to 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. Select "A/F SEN1(B1) P1278/P1279" or "A/F SEN1(B1) P1288/P1289" of "A/F SEN1" in "DTC WORK SUPPORT" mode with CONSULT-II.
6. Touch "START". If "COMPLETED" appears on CONSULT-II screen, go to step 10. If "COMPLETED" does not appear on CONSULT-II screen, go to the following step.
7. After perform the following procedure, "TESTING" will be displayed on the CONSULT-II screen. Increase the engine speed up to 4,000 to 5,000 RPM and keep it for 10 seconds. Fully release accelerator pedal and then let engine idle for about 10 seconds. If "TESTING" is not displayed after 10 seconds, refer to «TROUBLE DIAGNOSIS - SPECIFICATION VALUE»(ref-169472-S00985612472004120900000) .
8. Wait for about 20 seconds at idle at under the condition that "TESTING" is displayed on the CONSULT-II screen.
9. Make sure that "TESTING" changes to "COMPLETED". If "TESTING" changed to "OUT OF CONDITION", refer to «TROUBLE DIAGNOSIS - SPECIFICATION VALUE»(ref-169472-S00985612472004120900000) .
10. Make sure that "OK" is displayed after touching "SELF-DIAG RESULT". If "NG" is displayed, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25382830532004120900000) .

WITH GST

1. Start engine and warm it up to normal operating temperature.
2. Select "MODE 1" with GST.
3. Calculate the total value of "Short term fuel trim" and "Long term fuel trim" indications. Make sure that the total percentage should be within +/-15%. If OK, go to the following step. If NG, check the following. Intake air leaks Exhaust gas leaks Incorrect fuel pressure Lack of fuel Injectors Incorrect PCV hose connection PCV valve Mass air flow sensor
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Start engine and keep the engine speed between 3,500 and 4,000 RPM for at least 1 minute under no load.
6. Let engine idle for 1 minute.
7. Increase the engine speed up to 4,000 to 5,000 RPM and keep it for 10 seconds.
8. Fully release accelerator pedal and then let engine idle for about 1 minute.
9. Select "MODE 7" with GST. If the 1st trip DTC is displayed, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25382830532004120900000) .

To judge the malfunction of A/F sensor 1, this diagnosis measures response time of the A/F signal computed by ECM from the air fuel ration A/F sensor 1 signal. The time is compensated by engine operating (speed and load), fuel feedback control constant, and the A/F sensor 1 temperature index. Judgment is based on whether the compensated time (the A/F signal cycling time index) is inordinately long or not.

Scheme 326

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.

Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

WITH CONSULT-II

Scheme 327

Scheme 328

Scheme 329

1. Start engine and warm it up to 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. Select "A/F SEN1(B1) P1278/P1279" or "A/F SEN1(B1) P1288/P1289" of "A/F SEN1" in "DTC WORK SUPPORT" mode with CONSULT-II.
6. Touch "START". If "COMPLETED" appears on CONSULT-II screen, go to step 10. If "COMPLETED" does not appear on CONSULT-II screen, go to the following step.
7. After perform the following procedure, "TESTING" will be displayed on the CONSULT-II screen. Increase the engine speed up to 4,000 to 5,000 RPM and keep it for 10 seconds. Fully release accelerator pedal and then let engine idle for about 10 seconds. If "TESTING" is not displayed after 10 seconds, refer to «TROUBLE DIAGNOSIS - SPECIFICATION VALUE»(ref-169472-S00985612472004120900000) .
8. Wait for about 20 seconds at idle at under the condition that "TESTING" is displayed on the CONSULT-II screen.
9. Make sure that "TESTING" changes to "COMPLETED". If "TESTING" changed to "OUT OF CONDITION", refer to «TROUBLE DIAGNOSIS - SPECIFICATION VALUE»(ref-169472-S00985612472004120900000) .
10. Make sure that "OK" is displayed after touching "SELF-DIAG RESULT". If "NG" is displayed, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S09693180622004120900000) .

WITH GST

1. Start engine and warm it up to normal operating temperature.
2. Select "MODE 1" with GST.
3. Calculate the total value of "Short term fuel trim" and "Long term fuel trim" indications. Make sure that the total percentage should be within +/-15%. If OK, go to the following step. If NG, check the following. Intake air leaks Exhaust gas leaks Incorrect fuel pressure Lack of fuel Injectors Incorrect PCV hose connection PCV valve Mass air flow sensor
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Start engine and keep the engine speed between 3,500 and 4,000 RPM for at least 1 minute under no load.
6. Let engine idle for 1 minute.
7. Increase the engine speed up to 4,000 to 5,000 RPM and keep it for 10 seconds.
8. Fully release accelerator pedal and then let engine idle for about 1 minute.
9. Select "MODE 7" with GST. If the 1st trip DTC is displayed, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S09693180622004120900000) .

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.

Always perform test at a temperature of 5°C (41°F) or more.

With CONSULT-II

Scheme 330

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Select "PURG VOL CN/V P1444" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode with CONSULT-II.
5. Touch "START".
6. Start engine and let it idle until "TESTING" on CONSULT-II changes to "COMPLETED". (It will take approximately 10 seconds.) If "TESTING" is not displayed after 5 minutes, retry from step 2.
7. Make sure that "OK" is displayed after touching "SELF-DIAG RESULTS". If "NG" is displayed, refer to «DIAGNOSTIC PROCEDURE»(ref-169472-S04929681812004120900000) .

WITH GST

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and let it idle for at least 20 seconds.
4. Select MODE 7 with GST.
5. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S04929681812004120900000) .

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.

With CONSULT-II

Scheme 331

Scheme 332

1. Turn ignition switch ON and wait at least 5 seconds.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
4. Start engine and let it idle for at least 1 minute.
5. Repeat next procedures 3 times. Increase the engine speed up to 3,000 to 3,500 RPM and keep it for 2 minutes and 50 seconds to 3 minutes. Never exceed 3 minutes. Fully released accelerator pedal and keep engine idle for about 5 seconds.
6. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S29329092252004120900000) . If 1st trip DTC is not detected, go to the next step.
7. Repeat next procedure 20 times. Quickly increase the engine speed up to 4,000 to 4,500 RPM or more and keep it for 25 to 30 seconds. Fully released accelerator pedal and keep engine idle for at least 35 seconds.
8. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S29329092252004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

This self-diagnosis has the one trip detection logic.

The MIL will not light up for this diagnosis.

Note. If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to DTC P0605 ECM .

Scheme 333

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.

With CONSULT-II

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Wait at least 10 seconds.
4. Press ON/OFF (MAIN) switch for at least 10 seconds, then release it and wait at least 10 seconds.
5. Press ACCEL/RESUME switch for at least 10 seconds, then release it and wait at least 10 seconds.
6. Press COAST/SET switch for at least 10 seconds, then release it and wait at least 10 seconds.
7. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
8. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S01126909912004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

This self-diagnosis has the one trip detection logic.

The MIL will not light up for this diagnosis.

Note. If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to DTC P0605 ECM .

Scheme 334

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.

Steps 3 and 4 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.

With CONSULT-II

Scheme 335

Scheme 336

1. Start engine (VDC switch OFF).
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Drive the vehicle for at least 5 consecutive seconds under the following conditions. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S08147280922004120900000) . If DTC is not detected, go to the following step.
4. Drive the vehicle for at least 5 consecutive seconds under the following conditions.
5. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S08147280922004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

This self-diagnosis has the one trip detection logic.

The MIL will not light up for this diagnosis.

Note. If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to DTC U1000, U1001 CAN COMMUNICATION LINE . If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer to DTC P0500 VSS . If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to DTC P0605 ECM .

Scheme 337

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.

Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.

With CONSULT-II

Scheme 338

1. Start engine (VDC switch OFF).
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Drive the vehicle at more than 40 km/h (25 MPH).
4. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S07389898102004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

1. CHECK DTC WITH TCM Check DTC with TCM. Refer to «ON BOARD DIAGNOSTIC (OBD) SYSTEM»(ref-169880-S34616247252004121700000) in AUTOMATIC TRANSMISSION - TITAN article in AUTOMATIC TRANSMISSION. OK or NG OK: GO TO 2. NG: Perform trouble shooting relevant to DTC indicated.
2. CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) Refer to «TROUBLE DIAGNOSIS»(ref-215106-S23836399542006010900000) for ABS, or refer to for ABS/TCS/VDC «TROUBLE DIAGNOSIS»(ref-215107-S18746142642006010900000) in ANTI-LOCK (ABS) - TITAN article. OK or NG OK: GO TO 3. NG: Repair or replace.
3. CHECK COMBINATION METER Check combination meter function. Refer to «COMBINATION METERS»(ref-170082-S30950297692005010600000) in GAUGES & INSTRUMENT PANEL - TITAN article in ACCESSORIES & BODY, CAB. . INSPECTION END

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.

With CONSULT-II

Scheme 339

Scheme 340

Scheme 341

Scheme 342

1. Turn ignition switch ON.
2. Select "P/N POSI SW" in "DATA MONITOR" mode with CONSULT-II. Then check the "P/N POSI SW" signal under the following conditions. If NG, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S12032121202004120900000) . If OK, go to following step.
3. Select "DATA MONITOR" mode with CONSULT-II.
4. Start engine and warm it up to normal operating temperature.
5. Maintain the following conditions for at least 60 consecutive seconds.
6. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S12032121202004120900000) .

1. CHECK DTC WITH TCM Refer to «ON BOARD DIAGNOSTIC (OBD) SYSTEM»(ref-169880-S34616247252004121700000) in AUTOMATIC TRANSMISSION - TITAN article in AUTOMATIC TRANSMISSION. OK or NG OK: GO TO 2. NG: Repair or replace.
2. CHECK STARTING SYSTEM Turn ignition switch OFF, then turn it to START. Does starter motor operate? Yes or No Yes: GO TO 3. No: Refer to «STARTERS»(ref-168490) in STARTERS - TITAN article. .
3. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I Turn ignition switch OFF. Disconnect TCM harness connector. Disconnect combination meter harness connector. Check harness continuity between TCM terminal 9 and combination meter terminal 39. Refer to «WIRING DIAGRAM»(ref-169472-S30785991342004120900000) . Continuity should exist. Also check harness for short to ground and 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 connectors E152, M31 Harness for open or short between TCM and combination meter : Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II Disconnect ECM harness connector. Check harness continuity between ECM terminal 102 and combination meter terminal 40. Refer to «WIRING DIAGRAM»(ref-169472-S30785991342004120900000) . Continuity should exist. Also check harness for short to ground and short to power. OK or NG OK: GO TO 7. NG: GO TO 6.
6. DETECT MALFUNCTIONING PART Check the following. Harness connectors M31, E152 Harness for open or short between ECM and combination meter : Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK INTERMITTENT INCIDENT Refer to «TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT»(ref-169472-S11178043272004120900000) . OK or NG OK: GO TO 8. NG: Repair or replace.
8. REPLACE COMBINATION METER Refer to «COMBINATION METERS»(ref-170082-S30950297692005010600000) in GAUGES & INSTRUMENT PANEL - TITAN article in ACCESSORIES & BODY, CAB. . INSPECTION END

The MIL will not light up for this diagnosis.

Scheme 343

When the malfunction is detected, the ECM enters fail-safe mode.

Scheme 344

With CONSULT-II

Scheme 345

1. Turn ignition switch ON.
2. Fully depress the brake pedal for at least 5 seconds.
3. Erase the DTC with CONSULT-II.
4. Select "DATA MONITOR" mode with CONSULT-II.
5. If 1st trip DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S04686143312004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

These self-diagnoses have the one trip detection logic.

Note. If DTC P2122 or P2123 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229. Refer to DTC P1229 SENSOR POWER SUPPLY .

Scheme 346

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

Scheme 347

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.

Before performing the following procedure, confirm that battery voltage is more than 8V at idle.

With CONSULT-II

Scheme 348

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S40145170732004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

These self-diagnoses have the one trip detection logic.

Scheme 349

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

Scheme 350

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.

Before performing the following procedure, confirm that battery voltage is more than 8V at idle.

With CONSULT-II

Scheme 351

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S37202531812004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

This self-diagnosis has the one trip detection logic.

Scheme 352

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

Scheme 353

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.

Before performing the following procedure, confirm that battery voltage is more than 8V at idle.

With CONSULT-II

Scheme 354

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S39931123402004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.

This self-diagnosis has the one trip detection logic.

Note. If DTC P2138 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229. Refer to DTC P1229 SENSOR POWER SUPPLY .

Scheme 355

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

Scheme 356

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.

Before performing the following procedure, confirm that battery voltage is more than 8V at idle.

With CONSULT-II

Scheme 357

1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to «DIAGNOSTIC PROCEDURE»(ref-169472-S25338186232004120900000) .

WITH GST

Follow the procedure "WITH CONSULT-II" above.