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Acura RL. Manual - part 479

2005-08 ENGINE PERFORMANCE

EVAP System - RL

COMPONENT LOCATION INDEX

Fig. 1: Identifying EVAP System Component Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.

DTC TROUBLESHOOTING

DTC P0443: EVAP CANISTER PURGE VALVE CIRCUIT MALFUNCTION

Special Tools Required

2007 Acura RL

2005-08 ENGINE PERFORMANCE EVAP System - RL

2007 Acura RL

2005-08 ENGINE PERFORMANCE EVAP System - RL

Friday, June 05, 2009 2:30:48 PM

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Friday, June 05, 2009 2:30:54 PM

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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 PCM.

5. Turn the ignition switch OFF, and allow the engine to cool below 140°F (60°C).

6. Disconnect the vacuum hose (A) from the EVAP canister purge valve joint (B) in the engine

compartment, and connect a vacuum pump/gauge, 0-30 in.Hg, to the hose.

Fig. 2: Identifying Vacuum Hose And EVAP Canister Purge Valve Joint
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.

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot,
and review the general troubleshooting information (see GENERAL
TROUBLESHOOTING INFORMATION ).

2007 Acura RL

2005-08 ENGINE PERFORMANCE EVAP System - RL

Friday, June 05, 2009 2:30:48 PM

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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. 1 and body

ground.

Fig. 3: Checking Continuity Between EVAP Canister Purge Valve 2P Connector Terminal No. 1
And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 11.

NO - Go to step 24.

11. Jump the SCS line with the HDS.

12. Disconnect PCM connector B (24P).

13. Check for continuity between EVAP canister purge valve 2P connector terminal No. 1 and body

ground.

Fig. 4: Checking Continuity Between EVAP Canister Purge Valve 2P Connector Terminal No. 1
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 PCM (B2), then go to
step 25.

2007 Acura RL

2005-08 ENGINE PERFORMANCE EVAP System - RL

Friday, June 05, 2009 2:30:48 PM

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NO - Go to step 31.

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. 2 and body ground.

Fig. 5: Measuring Voltage Between EVAP Canister Purge Valve 2P Connector Terminal No. 2
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. 18 ACG (15A) fuse
in the under-dash fuse/relay box, then go to step 25.

18. Turn the ignition switch OFF.

19. Jump the SCS line with the HDS.

20. Disconnect PCM connector B (24P).

21. Connect EVAP canister purge valve 2P connector terminal No. 1 to body ground with a jumper wire.

Fig. 6: Connecting EVAP Canister Purge Valve 2P Connector Terminal No. 1 To Body Ground
With Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.

22. Check for continuity between PCM connector terminal B2 and body ground.

2007 Acura RL

2005-08 ENGINE PERFORMANCE EVAP System - RL

Friday, June 05, 2009 2:30:48 PM

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Content .. 477 478 479 480 ..