FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.
Home >> Nissan-Datsun Truck >> 1997 >> D21 Hardbody SE King Cab 2WD L4-2389cc 2.4L SOHC MFI (KA24E) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> Engine Control System >> DTC 1008

DTC 1008




SYSTEM DESCRIPTION
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 valve changes to control the flow rate. A built-in step motor moves the valve in steps corresponding to the ECM output pulses. 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.




ECM TERMINALS AND REFERENCE VALUE
Specification data are reference values and are measured between each terminal and (43) (ECCS ground).




CONSULT REFERENCE VALUE IN DATA MONITOR MODE
Specification data are reference values.




COMPONENT DESCRIPTION
The EVAP canister purge volume control valve uses a step motor to control the flow rate of fuel vapor from the EVAP canister. This motor has four winding phases. It operates according to the output pulse signal of the ECM. Two windings are turned ON and OFF in sequence. Each time an ON pulse is issued, the valve opens or closes, changing the flow rate. When no change in the flow rate is needed, the ECM does not issue the pulse signal. A certain voltage signal is issued so that the valve remains at that particular opening.




ON BOARD DIAGNOSIS LOGIC

DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
Perform "Procedure for malfunction A" first. If the 1st trip DTC cannot be confirmed, perform "Procedure for malfunction B".

Procedure for Malfunction A
With CONSULT
(1) Lift up vehicle.
(2) Turn ignition switch "ON" and select "DATA MONITOR" mode with CONSULT.
(3) Start engine and let it idle for at least 90 seconds.
(4) Move selector/gearshift lever to "1" range (A/T) or "1st" gear (M/T).
(5) Rev engine from idle to 2,000 to 3,000 rpm more than 10 times.

OR

With GST
(1) Lift up vehicle.
(2) Start engine and let it idle for at least 90 seconds.
(3) Move selector/gearshift lever to "1" range (A/T) or "1st" gear (M/T).
(4) Rev engine from idle to 2,000 to 3,000 rpm more than 10 times.
(5) Select "MODE 3" with GST.

OR

NO TOOLS
(1) Lift up vehicle.
(2) Start engine and let it idle for at least 90 seconds.
(3) Move selector/gearshift lever to "1" range (A/T) or "1st" gear (M/T).
(4) Rev engine from idle to 2,000 to 3,000 rpm more than 10 times.
(5) Turn ignition switch "OFF", wait at least 7 seconds and then turn "ON".
(6) Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.

Procedure for Malfunction B
With CONSULT
(1) Lift up vehicle.




(2) Turn ignition switch "ON" and select "DATA MONITOR" mode with CONSULT.
(3) Start engine and warm it up sufficiently.
(4) Check that tank fuel temperature is above 0°C (32° F).
(5) Turn ignition switch "OFF" and wait at least 7 seconds.
(6) Turn ignition switch "ON" and wait at least 12 seconds.
(7) Start engine and let it idle for at least 70 seconds.
(8) Maintain the following conditions for at least 25 seconds.

Gear position:
2" or "D" range (A/T)
"3rd" or "4th" gear (M/T)
Vehicle speed: 50 - 70 km/h (31 - 43 MPH)
Engine speed: 1,500 - 2,500 rpm
Coolant temperature: Less than 100°C (212°F)

OR

With GST
(1) Lift up vehicle.




(2) Turn ignition switch "ON" and select "MODE 1" mode with GST.
(3) Start engine and warm it up sufficiently.
(4) Check that voltage between ECM terminal (63) and ground is less than 4.2V.
(5) Turn ignition switch "OFF" and wait at least 7 seconds.
(6) Turn ignition switch "ON" and wait at least 12 seconds.
(7) Start engine and let it idle for at least 70 seconds.
(8) Maintain the following conditions for at least 25 seconds.

Gear position:
"2" or "D" range (A/T)
"3rd" or "4th" gear (M/T)
Vehicle speed: 50 - 70 km/h (31 - 43 MPH)
Engine speed: 1,500 - 2,500 rpm
Coolant temperature: Less than 100°C (212°F)

(9) Select "MODE 3" with GST.

OR

NO TOOLS
(1) Lift up vehicle.
(2) Turn ignition switch "ON".
(3) Start engine and warm it up sufficiently.




(4) Check that voltage between ECM terminal (63) and ground is less than 4.2V.
(5) Turn ignition switch "OFF" and wait at least 7 seconds.
(6) Turn ignition switch "ON" and wait at least 12 seconds.
(7) Start engine and let it idle for at least 70 seconds.
(8) Maintain the following conditions for at least 25 seconds.

Gear position:
"2" or "D" range (A/T)
"3rd" or "4th" gear (M/T)
Vehicle speed: 50 - 70 km/h (31 - 43 MPH)
Engine speed: 1,500 - 2,500 rpm
Voltage between ECM terminal (51) and ground: More than 0.8V

(9) Turn ignition switch "OFF", wait at least 7 seconds and then turn "ON".
(10) Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.

EC-PGC/V-01 Evaporative Emission (EVAP) Canister Purge Volume Control Valve (DTC P1445):




WIRING DIAGRAM




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 30 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

Without 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 30 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.

pro multis Credits:Operation CHARM About Operation CHARM