Acura RSX Honda Integra. Manual — part 189
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*01
02
S6M6AAJK72100091457FAAT00
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DTC P1457:
Special Tools Required
EVAP Canister Purge Valve Test
YES
NO
11-462
EVAP System
DTC Troubleshooting (cont’d)
A
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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*02
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YES
NO
YES
NO
EVAP Bypass Solenoid Valve Test
YES
NO
11-463
EVAP CANISTER PURGE
VALVE 2P CONNECTOR
PCS
(YEL/BLU)
EVAP CANISTER PURGE
VALVE 2P CONNECTOR
IG1
(BLK/YEL)
A
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
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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*03
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YES
NO
YES
NO
EVAP Canister Vent Shut Valve Test
11-464
EVAP System
DTC Troubleshooting (cont’d)
EVAP BYPASS SOLENOID
VALVE 2P CONNECTOR
2WBS
(BLU/RED)
A
EVAP BYPASS SOLENOID
VALVE 2P CONNECTOR
2WBS
(BLU/RED)
A
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
Wire side of female terminals
Is ther e continuity?
Is ther e continuity?
05/06/27 17:44:52 61S6M040_110_0464
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05
17
08
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YES
NO
YES
NO
YES
NO
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)
B
A
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
Wire side of female terminals
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
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