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Acura RSX Honda Integra. Manual - part 171

０１

０２

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−

DTC P0662:

YES

11-390

Intake Air System

DTC Troubleshooting (cont’d)

IMT (IMRC) VALVE POSITION
SENSOR 3P CONNECTOR

SG1
(GRN/WHT)

VCC1
(YEL/RED)

ECM/PCM CONNECTOR A (31P)

VCC1
(YEL/RED)

SG1
(GRN/WHT)

IMT (IMRC) Valve Position Sensor

Circuit High Voltage
(2005-2006 models)

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

2. Turn the ignition switch ON (II).

Go to step 3.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the IMT (IMRC) valve position sensor and the ECM/
PCM.

3. Turn the ignition switch OFF.

4. Disconnect the IMT (IMRC) valve position sensor 3P

connector.

5. Turn the ignition switch ON (II).

6. At the wire harness side, measure voltage between

IMT (IMRC) valve position sensor 3P connector
terminals No. 1 and No. 3.

Go to step 8.

Go to step 7.

7. Measure voltage between ECM/PCM connector

terminals A21 and A24.

Repair open in the wire between the ECM/

PCM (A24) and the IMT (IMRC) valve position
sensor, then go to step 10.

Go to step 15.

8. Turn the ignition switch OFF.

Wire side of female terminals

Is DT C P0662 indicated?

Is ther e about 5 V ?

05/06/27 17:41:56 61S6M040_110_0390

−

YES

11-391

9. Replace the IMT (IMRC) valve position sensor

(see page 11-413).

10. Reconnect all connectors.

11. Turn the ignition switch ON (II).

12. Reset the ECM/PCM with the HDS.

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

11-349).

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

If DTC P0662 is indicated, check for poor

connections or loose terminals at the IMT (IMRC)
valve position sensor 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.

Troubleshooting is complete.

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

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

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

If DTC P0662 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).

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

05/06/27 17:42:30 61S6M040_110_0391

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＊０２

＊０３

Ｓ６Ｍ６ＡＥＪＫ７２１０００９１０７７ＦＡＡＴ００

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DTC P1077:

Special Tools Required

YES

11-392

Intake Air System

DTC Troubleshooting (cont’d)

IMT (IMRC) System Malfunction

(Low rpm) Stuck Short
(2002-2004 models)

Vacuum pump/gauge, 0

30 in.Hg, Snap-on YA4000A

or equivalent, commercially available

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

2. Start the engine. Hold the engine speed at

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

Go to step 3.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the intake manifold tuning (IMT) (intake manifold
runner control (IMRC)) solenoid valve and the ECM/
PCM.

3. Disconnect the vacuum hose (A) from the intake

manifold tuning (IMT) (intake manifold runner
control (IMRC)) actuator (B), and connect the
vacuum pump/gauge, 0

30 in.Hg, to the hose.

Go to step 11.

Go to step 4.

4. Check the vacuum hose between the IMT (IMRC)

actuator and the IMT (IMRC) solenoid valve.

Go to step 5.

Repair the blockage or vacuum leak between

the IMT (IMRC) actuator and the IMT (IMRC)
solenoid valve.

5. Disconnect the lower vacuum hose (A) from the

IMT (IMRC) solenoid valve (B), and connect the
vacuum pump/gauge, 0

30 in.Hg, to the hose.

Go to step 6.

Repair the blockage or vacuum leak between

the intake manifold and the IMT (IMRC) solenoid
valve.

6. Reconnect the lower vacuum hose to the IMT

(IMRC) solenoid valve, and connect the vacuum
pump/gauge, 0

30 in.Hg, to the vacuum hose (A).

Is DT C P107 7 indicated?

Is ther e vacuum?

Is the vacuum hose OK ?

Is ther e vacuum?

05/06/27 17:42:30 61S6M040_110_0392

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０１

＊０４

０２

−

YES

11-393

IMT (IMRC) SOLENOID VALVE
2P CONNECTOR

IMT (IMRC)
(RED/BLU)

IMT (IMRC) VALVE POSITION
SENSOR 3P CONNECTOR

SG1

IMTVPS
(IMRCVPS)

7. Disconnect the IMT (IMRC) solenoid valve 2P

connector.

Go to step 8.

Replace the IMT (IMRC) solenoid valve.

8. Turn the ignition switch OFF.

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

10. Check for continuity between IMT (IMRC) solenoid

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

Repair short in the wire between the ECM/

PCM (B22) and the IMT (IMRC) solenoid valve.

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).

11. Turn the ignition switch OFF.

12. Connect the vacuum pump/gauge, 0

30 in.Hg, to

the IMT (IMRC) actuator (A), then apply vacuum.

Go to step 13.

Replace the IMT (IMRC) valve assembly

(see page 11-413).

13. Disconnect the IMT (IMRC) valve position sensor 3P

connector.

14. At the sensor side, measure resistance between

IMT (IMRC) valve position sensor 3P connector
terminals No. 2 and No. 3 while applying vacuum
to the IMT (IMRC) actuator.

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).

Replace the IMT (IMRC) valve assembly

(see page 11-413).

Wire side of female terminals

Terminal side of male terminals

Is ther e vacuum?

Is ther e continuity?

Does the IMT ( IMRC) actuator hold vacuum?

Is ther e about 9.5 k

at r oom temper atur e?

05/06/27 17:42:31 61S6M040_110_0393

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