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Acura RSX Honda Integra. Manual - part 189

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DTC P1457:

Special Tools Required

EVAP Canister Purge Valve Test

YES

11-462

EVAP System

DTC Troubleshooting (cont’d)

ECM/PCM CONNECTOR B (24P)

PCS (YEL/BLU)

JUMPER WIRE

EVAP Control System Leakage

(EVAP Canister System)
(2002-2004 models)

The fuel system is designed to allow specified
maximum vacuum and pressure conditions. Do not
deviate from the vacuum and pressure tests as
indicated in these procedures. Excessive pressure/
vacuum would damage the EVAP components or
cause eventual fuel tank failure.

Vacuum pump/gauge, 0

30 in.Hg, Snap-on YA4000A

or equivalent, commercially available

This is a two-trip code; once cleared, it cannot be
reproduced in one trip. Also, certain specific driving
and ambient conditions must occur before the ECM/
PCM will complete the system checks. Additional test
drives may still not meet the specific conditions needed
to reproduce the code. If necessary, use the test drive
procedures for setting the readiness code (see page
11-90).

Therefore, follow these troubleshooting procedures
carefully to ensure the integrity of the system and to
comfirm the cause of the problem or code.

NOTE: Fresh fuel has a higher volatility that will create
greater pressure/vacuum. The optimum condition for
testing is fresh fuel, and must be less than a full tank of
fuel. If possible, to assist in leak detection, add 1 gallon
of fresh fuel to the tank (as long as it will not fill the
tank), just before starting these procedures.

1. Disconnect the vacuum hose from the EVAP

canister purge valve (A), and connect the vacuum
pump/gauge, 0

30 in.Hg, to the hose.

2. Turn the EVAP canister purge valve on with the

HDS, or connect ECM/PCM connector terminal B21
to body ground with a jumper wire.

3. Turn the ignition switch ON (II).

4. Apply vacuum to the hose.

Go to step 5.

The EVAP canister purge valve is OK.

Go to step 10.

5. Turn the ignition switch OFF.

6. Disconnect the EVAP canister purge valve 2P

connector.

Wire side of female terminals

Does the valve hold vacuum?

05/06/27 17:44:51 61S6M040_110_0462

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YES

EVAP Bypass Solenoid Valve Test

YES

11-463

EVAP CANISTER PURGE
VALVE 2P CONNECTOR

PCS
(YEL/BLU)

EVAP CANISTER PURGE

VALVE 2P CONNECTOR

IG1
(BLK/YEL)

7. Check for continuity between EVAP canister purge

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

Go to step 8.

Repair open in the wire between the EVAP

canister purge valve and the ECM/PCM (B21).

8. Turn the ignition switch ON (II).

9. Measure voltage between EVAP canister purge

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

Replace the EVAP canister purge valve

(see page 11-412).

Repair open in the wire between the EVAP

canister purge valve and the No. 4 ACG (10 A)
fuse.

10. Disconnect both vacuum hoses from the EVAP two

way valve (A), and connect the vacuum pump/
gauge, 0

30 in.Hg, to the canister port on the two

way valve.

11. Turn the ignition switch ON (II).

12. Apply vacuum to the hose.

The EVAP two way/bypass solenoid valve is

OK. Go to step 18.

Go to step 13.

13. Turn the ignition switch OFF.

14. Disconnect the EVAP bypass solenoid valve 2P

connector.

(cont’d)

Wire side of female terminals

Is ther e continuity?

Is ther e batter y voltage?

Does the valve hold vacuum?

05/06/27 17:44:52 61S6M040_110_0463

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YES

EVAP Canister Vent Shut Valve Test

11-464

EVAP System

DTC Troubleshooting (cont’d)

EVAP BYPASS SOLENOID
VALVE 2P CONNECTOR

2WBS
(BLU/RED)

EVAP BYPASS SOLENOID
VALVE 2P CONNECTOR

2WBS
(BLU/RED)

15. Check for continuity between EVAP bypass

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

Go to step 16.

Replace the EVAP two way/bypass solenoid

valve (A).

16. Disconnect ECM/PCM connector E (31P).

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 ECM/PCM (E20).

Update the ECM/PCM if it does not have the

latest software, or substitute a known-good ECM/
PCM (see page 11-6), then recheck. If the symptom/
indication goes away with a known-good ECM/PCM,
replace the original ECM/PCM (see page 11-284).

18. Disconnect the vacuum hose from the EVAP

canister vent filter line (A), and connect the vacuum
pump/gauge, 0

30 in.Hg, to the hose.

Wire side of female terminals

Is ther e continuity?

05/06/27 17:44:52 61S6M040_110_0464

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YES

11-465

ECM/PCM CONNECTOR E (31P)

JUMPER WIRE

VSV
(LT GRN/
RED)

EVAP CANISTER VENT SHUT
VALVE 2P CONNECTOR

VSV
(LT GRN/RED)

EVAP CANISTER VENT SHUT
VALVE 2P CONNECTOR

IG1
(BLK/ORN)

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

HDS, or connect ECM/PCM connector terminal E21
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. If using the HDS to turn the EVAP canister
vent shut valve ON, turn the ignition switch ON (II).

Go to step 25.

Repair open in the wire between the EVAP

canister vent shut valve and the ECM/PCM (E21).

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 the O-ring (B).

Repair open in the wire between the EVAP

canister vent shut valve and the No. 4 ACG (10 A)
fuse.

(cont’d)

Wire side of female terminals

Does the valve hold vacuum?

Is ther e continuity?

Is ther e batter y voltage?

05/06/27 17:44:53 61S6M040_110_0465

Content .. 187 188 189 190 ..