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Honda Odyssey 2004. Manual - part 149

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YES

EVAP Canister Vent Shut Valve Test

YES

11-294

EVAP System

DTC Troubleshooting (cont’d)

EVAP BYPASS SOLENOID
VALVE 2P CONNECTOR

2WBS (BLU)

A973X-041-XXXXX

PCM CONNECTOR A (32P)

JUMPER WIRE

VSV (LT GRN/WHT)

EVAP CANISTER VENT
SHUT VALVE 2P CONNECTOR

VSV
(LT GRN/WHT)

16. Disconnect PCM connector A (32P).

17. Check for continuity between EVAP bypass

solenoid valve 2P connector terminal No. 2 and
body ground.

Repair short in the wire between the EVAP

bypass solenoid valve and the PCM (A3).

Substitute a known-good PCM and recheck

(see page 11-5). If the symptom/indication goes
away, replace the original PCM.

18. Disconnect the vacuum hose from the EVAP

canister vent filter (A), and connect a vacuum pump
to the hose.

19. Turn the EVAP canister vent shut valve on with the

HDS, or connect PCM connector terminal A4 to
body ground with a jumper wire.

20. Turn the ignition switch ON (II)

21. Apply vacuum to the hose.

The EVAP canister vent shut valve is OK. Go

to step 27.

Go to step 22.

22. Turn the ignition switch OFF.

23. Disconnect the EVAP canister vent shut valve 2P

connector.

24. Check for continuity between EVAP canister vent

shut valve 2P connector terminal No. 2 and body
ground.

Go to step 25.

Repair open in the wire between the EVAP

canister vent shut valve and the PCM (E22).

Wire side of female terminals

Is ther e continuity?

Does the valve hold vacuum?

Is ther e continuity?

03/07/29 09:26:26 61S0X050_110_0294

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１１

YES

Canister System Leak Test

11-295

EVAP CANISTER VENT
SHUT VALVE 2P CONNECTOR

IG1 (BLK/YEL)

A973X-041-XXXXX

A973X-041-
XXXXX

25. Turn the ignition switch ON (II).

26. Measure voltage between EVAP canister vent shut

valve 2P connector terminal No. 1 and body ground.

Replace the EVAP canister vent shut valve

(A) and O-ring (B).

Repair open in the wire between the EVAP

canister vent shut valve and No. 6 ECU (PCM)
CRUISE CONTROL (15A) fuse.

27. Turn the ignition switch OFF.

28. Connect 2 three-way T-fittings (A) into the hose

from the EVAP canister to the EVAP two way valve.
Connect the FTP sensor to one of the T-fittings and
the vacuum pump to the other.

29. Remove the vent hose from the EVAP canister vent

shut valve (A) and cap the port (B) to seal the fresh
air vent of the EVAP canister.

30. Turn the ignition switch ON (II).

31. While monitoring FTP sensor voltage with the HDS,

or while measuring voltage between PCM
connector terminals A29 and C18, slowly pump the
vacuum pump every 1

2 seconds.

32. Continue to pump vacuum until the voltage drops

to about 1.5 V. Make sure that the engine coolant
temperature is still above 95°F (35°C) and your
vacuum pump has no leak.

(cont’d)

Wire side of female terminals

Is ther e batter y voltage?

03/07/29 09:26:27 61S0X050_110_0295

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YES

11-296

EVAP System

DTC Troubleshooting (cont’d)

A973X-041-
XXXXX

A973X-041-XXXXX

33. Monitor the voltage for 20 seconds.

Inspect the EVAP canister vent shut valve

line and connections.

Go to step 34.

34. Turn the ignition switch OFF.

35. Disconnect the fuel tank vapor vent tube (A) from

the canister at the metal line, and plug the hose (B).

36. Turn the ignition switch ON (II).

37. While monitoring FTP sensor voltage with the HDS,

or measuring voltage between PCM connector
terminals A29 and C18, slowly pump the vacuum
pump every 1

2 seconds.

38. Continue to pump vacuum until the voltage drops

to about 1.5 V. Make sure that the engine coolant
temperature is still above 95°F (35°C) and your
vacuum pump does not have a leak.

39. Monitor the voltage for 20 seconds.

Check the fuel tank vapor control line and

connections for misrouting, poor connections,
damage, or pinched areas. If the line and
connections are OK, replace the fuel tank vapor
control valve.

Go to step 40.

40. Turn the ignition switch OFF.

41. Disconnect the purge line hose (A) from the

canister at the metal line, and plug the hose (B).

42. Turn the ignition switch ON (II).

43. While monitoring FTP sensor voltage with the HDS,

or while measuring voltage between PCM
connector terminals A29 and C18, slowly pump the
vacuum pump every 1

2 seconds.

44. Continue to pump vacuum until the voltage drops

to about 1.5 V. Make sure that the engine coolant
temperature is still above 95°F (35°C) and your
vacuum pump does not have a leak.

45.

Inspect the EVAP canister purge valve line

and connections. If they are OK, do the EVAP two
way valve test (see page 11-297). It the line, the
connections, and the EVAP two way valve are OK,
replace the EVAP canister purge valve.

Replace the EVAP canister.

Does the voltage dr op to 1.5 V and hold f or at
least 20 seconds?

03/07/29 09:26:28 61S0X050_110_0296

Monitor the voltage for 20 seconds.

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Special Tools Required

11-297

EVAP Two Way Valve Test

A973X-041-
XXXXX

07JAZ-001000B

A973X-041-
XXXXX

07JAZ-001000B

• Vacuum pump/gauge, 0

30 in.Hg A973X-041-XXXXX

• Vacuum/pressure gauge, 0

4 in.Hg 07JAZ-001000B

1. Remove the fuel fill cap.

2. Disconnect the vapor line from the EVAP two way

valve (A), and connect it to a T-fitting (B) from the
vacuum gauge and the vacuum pump as shown.

3. Apply vacuum slowly and continuously while

watching the gauge. The vacuum should stabilize
momentarily at 0.8

2.1 kPa (0.2

0.6 in.Hg, 6

mmHg).
If the vacuum stabilizes (valve opens) below 0.8 kPa
(0.2 in.Hg, 0.6 mm Hg) or above 2.1 kPa (0.6 in.Hg,
16 mmHg), install a new valve and retest.

4. Move the vacuum pump hose from the vacuum

fitting to the pressure fitting, and move the vacuum
gauge hose from the vacuum side to the pressure
side (A) as shown.

5. Slowly pressurize the vapor line while watching the

gauge. The pressure should stabilize momentarily
above 1.0 kPa (0.3 in.Hg, 8 mm Hg).

• If the pressure momentarily stabilizes (valve

opens) above 1.0 kPa (0.3 in.Hg, 8 mmHg), the
valve is OK.

• If the pressure stabilizes below 1.0 kPa (0.3 in.Hg,

8 mmHg), install a new valve and retest.

03/07/29 09:26:29 61S0X050_110_0297

Content .. 147 148 149 150 ..