Honda Civic. Manual — part 610
DTC TROUBLESHOOTING
DTC P0443: EVAP CANISTER PURGE VALVE CIRCUIT MALFUNCTION
Special Tools Required
Vacuum pump/gauge, 0-30 in.Hg, Snap-on YA4000A or equivalent, commercially
available
1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or
neutral) until the radiator fan comes on, then let it idle.
4. Check for Temporary DTCs or DTCs with the HDS. Is DTC P0443 indicated?
YES - Go to step 5.
NO - Intermittent failure, the system is OK at this time. Check for poor
connections or loose terminals at the EVAP canister purge valve and the
ECM/PCM.
5. Turn the ignition switch OFF, and allow the engine to cool below HOT (60°C).
6. Disconnect the vacuum hose (A) from the EVAP canister purge valve (B) in
the engine compartment, and connect a vacuum pump/gauge, 0-30 in.Hg, to the
hose.
NOTE:
Before you troubleshoot, record all freeze data and any on-
board snapshot, and review the general troubleshooting
information (see GENERAL TROUBLESHOOTING
INFORMATION ).
2008 Honda Civic EX
2006-08 ENGINE PERFORMANCE EVAP System (R18A1) - Civic (All Except Hybrid)
Fig. 2: Disconnecting Vacuum Hose From EVAP Canister Purge Valve
Courtesy of AMERICAN HONDA MOTOR CO., INC.
7. Start the engine, and let it idle.
Is there vacuum?
YES - Go to step 8.
NO - Go to step 14.
8. Turn the ignition switch OFF.
9. Disconnect the EVAP canister purge valve 2P connector.
10. Check for continuity between EVAP canister purge valve 2P connector
terminal No. 2 and body ground.
Fig. 3: Checking Continuity Between EVAP Canister Purge Valve 2P
Terminal No. 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
2008 Honda Civic EX
2006-08 ENGINE PERFORMANCE EVAP System (R18A1) - Civic (All Except Hybrid)
Is there continuity?
YES - Go to step 11.
NO - Go to step 23.
11. Jump the SCS line with the HDS.
12. Disconnect ECM/PCM connector B (44P).
13. Check for continuity between EVAP canister purge valve 2P connector
terminal No. 2 and body ground.
Fig. 4: Checking Continuity Between EVAP Canister Purge Valve 2P
Terminal No. 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Repair short in the wire between the EVAP canister purge valve and the
ECM/PCM (B3), then go to step 24.
NO - Go to step 30.
14. Turn the ignition switch OFF.
15. Disconnect the EVAP canister purge valve 2P connector.
16. Turn the ignition switch ON (II).
17. Measure voltage between EVAP canister purge valve 2P connector terminal
No. 1 and body ground.
2008 Honda Civic EX
2006-08 ENGINE PERFORMANCE EVAP System (R18A1) - Civic (All Except Hybrid)
Fig. 5: Measuring Voltage Between EVAP Canister Purge Valve 2P
Connector Terminal No. 1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES - Go to step 18.
NO - Repair open in the wire between the EVAP canister purge valve and the
No. 3 ALTERNATOR (10 A) fuse in the under-dash fuse/relay box, then go to
step 24.
18. Turn the ignition switch OFF.
19. Jump the SCS line with the HDS.
20. Disconnect ECM/PCM connector B (44P).
21. Check for continuity between ECM/PCM connector terminal B3 and EVAP
canister purge valve 2P connector terminal No. 2.
2008 Honda Civic EX
2006-08 ENGINE PERFORMANCE EVAP System (R18A1) - Civic (All Except Hybrid)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст