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Acura RSX Honda Integra. Manual - part 151

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−

YES

11-310

VTEC/VTC

DTC Troubleshooting (cont’d)

ECM/PCM CONNECTOR B (24P)

VTS (GRN/YEL)

JUMPER
WIRE

VTS
(GRN/YEL)

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

ECM/PCM CONNECTOR B (24P)

VTS (GRN/YEL)

20. Check for continuity between ECM/PCM connector

terminal B15 and body ground.

Repair short in the wire between the ECM/

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

Go to step 21.

21. Connect rocker arm oil control solenoid (VTEC

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

22. 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 ECM/

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

Wire side of female terminals

Is ther e continuity?

05/06/27 17:40:17 61S6M040_110_0310

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−

DTC P2646:

Special Tools Required

YES

11-311

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
(2005-2006 models)

• 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 adapter 07MAJ-PY40120
• Oil pressure hose 07ZAJ-S5A0200

1. Check the engine oil level.

Go to step 2.

Adjust the engine oil to the proper level, then

go to step 21.

2. Turn the ignition switch ON (II).

3. Clear the DTC with the HDS.

4. Do the VTEC TEST in the INSPECTION MENU with

the HDS.

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.

Go to step 5.

5. Turn the ignition switch OFF.

6. Disconnect the rocker arm oil pressure switch

(VTEC oil pressure switch) 2P connector.

7. Turn the ignition switch ON (II).

8. Check the VTEC PRES SW in the DATA LIST with

the HDS.

Go to step 9.

Replace the rocker arm oil pressure switch

(VTEC oil pressure switch) (see page 11-324), then
go to step 21.

9. Turn the ignition switch OFF.

10. 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.

11. Turn the ignition switch ON (II).

12. Do the VTEC TEST in the INSPECTION MENU with

the HDS.

13. Check the oil pressure.

Inspect the VTEC system. If it is OK, replace

the rocker arm oil control solenoid (VTEC solenoid
valve) (see page 11-324), then go to step 21.

Go to step 14.

(cont’d)

Is the level OK ?

Is the r esult OK ?

Is SW IT CH ON indicated?

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

05/06/27 17:40:17 61S6M040_110_0311

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−

YES

11-312

VTEC/VTC

DTC Troubleshooting (cont’d)

ECM/PCM CONNECTOR B (24P)

VTPSW (BLU/BLK)

14. Turn the ignition switch OFF.

15. Jump the SCS line with the HDS.

16. Disconnect the rocker arm oil pressure switch

(VTEC oil pressure switch) 2P connector.

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

18. Check for continuity between ECM/PCM connector

terminal B11 and body ground.

Repair short in the wire between the ECM/

PCM (B11) and the rocker arm oil pressure switch
(VTEC oil pressure switch), then go to step 19.

Go to step 27.

19. Reconnect the rocker arm oil pressure switch

(VTEC oil pressure switch) 2P connector.

20. Reconnect ECM/PCM connector B (24P).

21. Turn the ignition switch ON (II).

22. Reset the ECM/PCM with the HDS.

23. Do the ECM/PCM idle learn procedure (see page

11-349).

24. Do the VTEC TEST in the INSPECTION MENU with

the HDS.

25. Check for Temporary DTCs or DTCs with the HDS.

If DTC P2646 is indicated, 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, then go to step 1. If any
other Temporary DTCs or DTCs are indicated, go to
the indicated DTC’s troubleshooting.

Go to step 26.

26. Monitor the OBD STATUS for DTC P2646 in the

DTCs MENU with the HDS.

Troubleshooting is complete.

If the screen indicates FAILED, go to step 1

and recheck. If the screen indicates NOT
COMPLETED, go to step 24 and recheck.

27. Update the ECM/PCM if it does not have the latest

software, or substitute a known-good ECM/PCM
(see page 11-6).

28. Do the VTEC TEST in the INSPECTION MENU with

the HDS.

29. Check for Temporary DTCs or DTCs with the HDS.

If DTC P2646 is indicated, check for poor

If the ECM/PCM was updated, troubleshooting

is complete. If the ECM/PCM was substituted,
replace the original ECM/PCM (see page 11-284).

Wire side of female terminals

Is ther e continuity?

Ar e any T empor ar y DT Cs or DT Cs indicated?

Does the scr een indicate PASSED?

Ar e any T empor ar y DT Cs or DT Cs indicated?

05/06/27 17:40:18 61S6M040_110_0312

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−

DTC P2647:

Special Tools Required

YES

11-313

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 High
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
radiator fan comes on, then let it idle.

Go to step 6.

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.

6. Turn the ignition switch OFF.

7. 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.

8. 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.

9. 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 10.

Inspect the rocker arm oil control solenoid

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

10. Turn the ignition switch OFF.

11. Disconnect the rocker arm oil pressure switch

(VTEC oil pressure switch) 2P connector.

(cont’d)

Is the level OK ?

Is DT C P2647 indicated?

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

05/06/27 17:40:18 61S6M040_110_0313

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