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Acura RSX Honda Integra. Manual - part 150

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０３

−

YES

11-306

VTEC/VTC

DTC Troubleshooting (cont’d)

07406-0020201 or
07MAJ-PY4011A and
07MAJ-PY40120

A
22 N·m
(2.2 kgf·m,
16 lbf·ft)

07406-0070300

07NAJ-P07010A

07ZAJ-S5A0200

ECM/PCM CONNECTOR B (24P)

VTPSW (BLU/BLK)

18. Remove the rocker arm oil pressure switch (VTEC

oil pressure switch) (A) and install the special tools
as shown, then reinstall the rocker arm oil pressure
switch (VTEC oil pressure switch).

19. Reconnect the rocker arm oil control solenoid

(VTEC solenoid valve) 2P connector and rocker arm
oil pressure switch (VTEC oil pressure switch) 2P
connector.

20. Connect a tachometer, a scan tool, or the HDS.

21. Start the engine. Hold the engine speed at

3,000 rpm without load (in Park or neutral) until the
radiator fan comes on.

22. Check the oil pressure at engine speed of 1,000 and

2,000 rpm. Keep the measuring time as short as
possible (less than 1 minute) because the engine is
running without load.

Go to step 23.

Inspect the rocker arm oil control solenoid

(VTEC solenoid valve) (see page 11-323) and the
rocker arm oil control solenoid (VTEC solenoid
valve) filter (see page 11-324).

23. Turn the ignition switch OFF.

24. Disconnect the rocker arm oil control solenoid

(VTEC solenoid valve) 2P connector.

25. Attach the battery positive terminal to rocker arm

oil control solenoid (VTEC solenoid valve) 2P
connector terminal No. 2.

26. Start the engine, then connect the battery negative

terminal to rocker arm oil control solenoid (VTEC
solenoid valve) 2P connector terminal No. 1, and
check the oil pressure at an engine speed of
3,000 rpm.

Go to step 27.

Inspect the rocker arm oil control solenoid

(VTEC solenoid valve) (see page 11-323).

27. With the battery terminals still connected to the

rocker arm oil control solenoid (VTEC solenoid
valve) connector, measure voltage between ECM/
PCM connector terminal B9 and body ground.

Go to step 28.

Replace the rocker arm oil pressure switch

(VTEC oil pressure switch) (see page 11-324).

28. Turn the ignition switch OFF.

29. Disconnect the battery terminals from the rocker

arm oil control solenoid (VTEC solenoid valve)
terminal connector.

Wire side of female terminals

Is the oil pr essur e below 49 kPa ( 0.5 kgf / cm ,
7 psi)?

Is the oil pr essur e above 390 kPa ( 4.0 kgf / cm ,
57 psi)?

Is ther e batter y voltage above 4,000 r pm?

05/06/27 17:40:16 61S6M040_110_0306

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＊０６

０５

−

YES

11-307

ECM/PCM CONNECTOR B (24P)

VTS (GRN/YEL)

ROCKER ARM OIL CONTROL SOLENOID
(VTEC SOLENOID VALVE) 2P CONNECTOR

VTS
(GRN/YEL)

JUMPER
WIRE

ECM/PCM CONNECTOR B (24P)

VTS (GRN/YEL)

30. Disconnect ECM/PCM connector B (24P).

31. Check for continuity between ECM/PCM connector

terminal B15 and body ground.

Repair short in the wire between the rocker

arm oil control solenoid (VTEC solenoid valve) and
the ECM/PCM (B15).

Go to step 32.

32. Connect rocker arm oil control solenoid (VTEC

solenoid valve) 2P connector terminal No. 2 to
body ground with a jumper wire.

33. Check for continuity between ECM/PCM connector

terminal B15 and body ground.

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).

Repair open in the wire between the rocker

arm oil control solenoid (VTEC solenoid valve) and
the ECM/PCM (B15).

Wire side of female terminals

Is ther e continuity?

05/06/27 17:40:16 61S6M040_110_0307

０１

Ｓ６Ｍ６ＡＡＣＫ７２１０００９２６４６ＦＡＡＴ００

−

DTC P2646:

Special Tools Required

YES

11-308

VTEC/VTC

DTC Troubleshooting (cont’d)

07406-0020201 or
07MAJ-PY4011A and
07MAJ-PY40120

A
22 N·m
(2.2 kgf·m,
16 lbf·ft)

07406-0070300

B
07NAJ-P07010A

07ZAJ-S5A0200

Rocker Arm Oil Pressure Switch

(VTEC Oil Pressure Switch) Circuit Low
Voltage
(2004 model)

• Pressure gauge adapter 07NAJ-P07010A
• A/T low pressure gauge w/panel 07406-0070300
• A/T pressure hose 07406-0020201
• A/T pressure hose, 2,210 mm 07MAJ-PY4011A
• A/T pressure adaptor 07MAJ-PY40120
• Oil pressure hose 07ZAJ-S5A0200

1. Turn the ignition switch OFF.

2. Check the engine oil level.

Go to step 3.

Adjust the engine oil to the proper level.

3. Turn the ignition switch ON (II).

4. Reset the ECM/PCM (see page 11-4).

5. 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.

6. Test-drive under these conditions:

Accelerate in 1st gear to an engine speed over
5,000 rpm. Hold the speed for at least 2 seconds.

Go to step 7.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the rocker arm oil pressure switch (VTEC oil
pressure switch), the rocker arm oil control
solenoid (VTEC solenoid valve) and the ECM/
PCM.

7. Turn the ignition switch OFF.

8. Remove the rocker arm oil pressure switch (VTEC

oil pressure switch) (A) and install the special tools
as shown, then install the rocker arm oil pressure
switch (VTEC oil pressure switch) to the oil
pressure gauge adapter (B).

NOTE: Install the switch in the reverse order of
removal with a new O-ring.

9. Disconnect the rocker arm oil control solenoid

(VTEC solenoid valve) 2P connector.

10. 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.

11. Attach the battery positive terminal to rocker arm

oil control solenoid (VTEC solenoid valve) 2P
connector terminal No. 2.

12. Connect the battery negative terminal to rocker arm

oil control solenoid (VTEC solenoid valve) 2P
connector terminal No. 1, and check the oil
pressure at an engine speed of 3,000 rpm.

Go to step 13.

Inspect the rocker arm oil control solenoid

(VTEC solenoid valve) (see page 11-323).

Is the level OK ?

Is DT C P2646 indicated?

Is the oil pr essur e above 390 kPa ( 4.0 kgf / cm ,
57 psi)?

05/06/27 17:40:17 61S6M040_110_0308

＊０１

０２

＊０２

−

YES

11-309

ROCKER ARM OIL PRESSURE SWITCH
(VTEC OIL PRESSURE SWITCH) 2P CONNECTOR

VTPSW

GND

ECM/PCM CONNECTOR B (24P)

VTPSW (BLU/BLK)

GND (BLK)

ROCKER ARM OIL CONTROL SOLENOID
(VTEC SOLENOID VALVE) 2P CONNECTOR

13. Disconnect the rocker arm oil pressure switch

(VTEC oil pressure switch) 2P connector.

14. At the rocker arm oil pressure switch (VTEC oil

pressure switch) side, check for continuity between
rocker arm oil pressure switch (VTEC oil pressure
switch) terminals No. 1 and No. 2 under the same
conditions as step 12.

Replace the rocker arm oil pressure switch

(VTEC oil pressure switch) (see page 11-324).

Go to step 15.

15. Turn the ignition switch OFF.

16. Disconnect the battery terminals from the rocker

arm oil control solenoid (VTEC solenoid valve)
terminal connector.

17. Disconnect ECM/PCM connector B (24P).

18. Check for continuity between ECM/PCM connector

terminal B9 and body ground.

Repair short in the wire between the ECM/

PCM (B9) and the rocker arm oil pressure switch
(VTEC oil pressure switch).

Go to step 19.

19. Check for continuity between rocker arm oil control

solenoid (VTEC solenoid valve) 2P connector
terminal No. 1 and body ground.

Go to step 20.

Repair open in the wire between the rocker

arm oil control solenoid (VTEC solenoid valve) and
G101.

(cont’d)

Terminal side of male terminals

Wire side of female terminals

Is ther e continuity?

05/06/27 17:40:17 61S6M040_110_0309

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