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Home >> Nissan-Datsun >> 1996 >> 240SX L4-2.4L (KA24DE) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> Engine Control System >> DTC 0111

DTC 0111




SYSTEM DESCRIPTION
In this evaporative emission (EVAP) control system, purge flow occurs during non-closed throttle conditions. Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP canister purge volume control valve and EVAP canister purge control valve are open. Purge flow exposes the EVAP control system pressure sensor to intake manifold vacuum.




DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE

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

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

WITH CONSULT
(1) Lift up drive wheels (M/T models).
(2) Start engine.




(3) Select "EVAP SYS PRES" in "DATA MONITOR" mode with CONSULT.
(4) Check EVAP control system pressure sensor value at idle speed.




(5) Select "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT and set "PURG VOL CONT/V" to 20 steps by touching "UP" or "Qu".
(6) Maintain the following conditions for at least 30 seconds. Verify that EVAP control system pressure sensor value ("EVAP SYS PRES") stays 0.1V less than the value at idle speed for at least 2 seconds.

Engine speed:
Approx. 2,000 rpm
Gear position (for M/T models):
Any position other than "Neutral" or "Reverse"

CAUTION: Do not run vehicle at speeds greater than 80 km/h (50 MPH).

OR

WITH NO TOOLS
(1) Lift up drive wheels.
(2) Start engine and warm it up sufficiently.
(3) Turn ignition switch "OFF", wait at least 5 seconds.
(4) Start engine and wait at least 70 seconds.




(5) Set voltmeter probes to ECM terminals (67) (EVAP control system pressure sensor signal) and (43) (ground).
(6) Check EVAP control system pressure sensor value at idle speed.
(7) Establish and maintain the following conditions for at least 30 seconds.

Air conditioner switch: ON
Steering wheel: Fully turned
Headlamp switch: ON
Rear window defogger switch: ON
Engine speed: Approx. 3,500 rpm
Intake manifold vacuum:
-73.3 to -60.0 kPa (-550 to -450 mmHg,
-21.65 to -17.72 inch, -10.63 to -8.70 psi)
Gear position:
M/T models
Any position other than "Neutral" or "Reverse"
A/T models
Any position other than "P", "N" or "R".

Return all conditions to normal. Repeat this procedure at least 5 times.
Verify that EVAP control system pressure sensor value stays 0.1V less than the value at idle speed for at least 2 seconds.

CAUTION: Do not run vehicle at speeds greater than 80 km/h (50 MPH).







DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION




EVAP canister purge volume control valve
WITH CONSULT
(1) Disconnect EVAP canister purge volume control valve harness connector.




(2) Check resistance between the following terminals.
terminal (2) and terminals (1), (3)
terminal (5) and terminals (4), (6)

Resistance: Approximately 3O Ohms [At 25°C (77°F)]

(3) Reconnect EVAP canister purge volume control valve harness connector.
(4) Remove EVAP canister purge volume control valve from intake manifold collector and disconnect hoses from the valve.
(Plug the purge hoses. The EVAP canister purge volume control valve harness connector should remain connected.)
(5) Turn ignition switch "ON".




(6) Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT. Check that EVAP canister purge volume control valve shaft moves smoothly forward and backward according to the valve opening.
If NG, replace the EVAP canister purge volume control valve.

OR

WITH NO TOOLS
(1) Disconnect EVAP canister purge volume control valve harness connector.
(2) Check resistance between the following terminals.
terminal (2) and terminals (1), (3)
terminal (5) and terminals (4), (6)

Resistance: Approximately 3O Ohms [At 25°C (77°F)]

(3) Reconnect EVAP canister purge volume control valve harness connector.
(4) Remove EVAP canister purge volume control valve from intake manifold collector and disconnect hoses from the valve.
(Plug the purge hoses. The EVAP canister purge volume control valve harness connector should remain connected.




(5) Turn ignition switch "ON" and "OFF". Check that EVAP canister purge volume control valve shaft moves smoothly forward and backward according to the ignition switch position.
If NG, replace the EVAP canister purge volume control valve.




EVAP canister purge control valve
Check EVAP canister purge control valve as follows:
1. Blow air in port (A), (B) and (C), and check that there is no leakage.
2. Apply vacuum to port (A) with pump. [Approximately -13.3 to -20.0 kPa (-100 to -150 mmHg, -3.94 to -5.91 inch, -1.93 to -2.90 psi)]
Blow air in port (C) and check that it flows freely out of port (B).

EVAP canister purge control solenoid valve




Check air passage continuity.




If NG, replace solenoid valve.

EVAP control system pressure sensor
1. Remove EVAP control system pressure sensor with its harness connector connected.
2. Remove hose from EVAP control system pressure sensor.




3. Use pump to apply vacuum and pressure to EVAP control system pressure sensor as shown in figure.




4. Check output voltage between terminal (2) and engine ground.
5. If NG, replace EVAP control system pressure sensor.

CAUTION: Always calibrate the vacuum pump gauge when using it.

Absolute pressure sensor
1. Remove absolute pressure sensor with its harness connector connected.
2. Remove hose from absolute pressure sensor.




3. Turn ignition switch "ON" and check output voltage between terminal (2) and engine ground.

The voltage should be 3.2 to 4.8 V.

4. Use pump to apply vacuum of -26.7 kPa (-200 mmHg, -7.87 inch, -3.87 psi) to absolute pressure sensor as shown in figure and check the output voltage.

The voltage should be 1.0 to 1.4 V lower than the value measured in step 3.

5. If NG, replace absolute pressure sensor.

CAUTION: Always calibrate the vacuum pump gauge when using it.

MAP/BARO switch solenoid valve
WITH CONSULT
1. Start engine and warm it up sufficiently.
2. Perform "MAP/BARO SW/V" in "ACTIVE TEST" mode with CONSULT.
3. Check the following.




- When "MAP" is selected, "ABSOL PRES/SE" indicates approximately 1.3V.




- When "BARO" is selected, "ABSOL PRES/SE" indicates approximately 4.3V.
4. If NG, replace solenoid valve.

OR

WITH NO TOOLS
1. Remove MAP/BARO switch solenoid valve.




2. Check air passage continuity.




3. If NG, replace solenoid valve.
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