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Honda Ridgeline. Manual - part 135

＊０１

＊０２

ＳＪＣ８Ａ００Ａ２０３３６３０００００ＤＡＡＴ００

11-304

Intake Air System

Component Location Index

POWERTRAIN CONTROL
MODULE (PCM)

THROTTLE BODY

AIR INTAKE DUCT

AIR CLEANER

THROTTLE CABLE

INTAKE MANIFOLD TUNING
(IMT) ACTUATOR

ACCELERATOR PEDAL

Update, page 11-7
Substitution, page 11-8
Replacement, page 11-205

Test, page 11-314
Cleaning, page 11-314
Removal/Installation, page 11-319
Disassembly/Reassembly, page 11-320

Removal/Installation, page 11-316

Removal/Installation,

page 11-315

Element Inspection/Replacement,

page 11-315

Adjustment, page 11-317
Removal/Installation, page 11-317

Replacement, page 11-316

Replacement, page 11-321

０１

０２

ＳＪＣ８Ａ００Ｋ７７１０００９１０７７ＦＡＡＴ３０

＋

−

DTC P1077:

YES

11-305

DTC Troubleshooting

PCM CONNECTOR B (44P)

IMTM (WHT/BLK)

PCM CONNECTOR C (44P)

IMT

(WHT/BLU)

IMT Valve Stuck in High RPM

Position

NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Start the engine, and let it idle.

4. Check the IMT VALVE CMD in the DATA LIST with

the HDS.

Go to step 5.

Go to step 31.

5. Check the IMT VALVE SW in the DATA LIST with

the HDS.

Go to step 6.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at the IMT actuator and the PCM.

6. Turn the ignition switch OFF.

7. Disconnect the IMT actuator 5P connector.

8. Turn the ignition switch ON (II).

9. Check the IMT VALVE SW in the DATA LIST with

the HDS.

Go to step 14.

Go to step 10.

10. Turn the ignition switch OFF.

11. Jump the SCS line with the HDS.

12. Disconnect PCM connector B (44P).

13. Check for continuity between PCM connector

terminal B31 and body ground.

Repair short in the wire between the PCM

(B31) and the IMT actuator, then go to step 25.

Go to step 31.

14. Turn the ignition switch OFF.

15. Jump the SCS line with the HDS.

16. Disconnect PCM connector C (44P).

17. Check for continuity between PCM connector

terminal C43 and body ground.

Repair short in the wire between the PCM

(C43) and the IMT actuator, then go to step 25.

Go to step 18.

(cont’d)

Terminal side of female terminals

Is CLOSE indicated?

Is OPEN indicated?

Is CLOSE indicated?

Is ther e continuity?

０３

０４

０５

０６

＋

−

＋

−

YES

11-306

Intake Air System

DTC Troubleshooting (cont’d)

IMT ACTUATOR 5P CONNECTOR

PCM CONNECTOR C (44P)

IMT

(WHT/BLU)

PCM CONNECTOR C (44P)

IMT
(WHT/RED)

IMT ACTUATOR 5P CONNECTOR

JUMPER
WIRE

IMT
(WHT/BLU)

JUMPER
WIRE

IMT
(WHT/RED)

18. Connect IMT actuator 5P connector terminal No. 5

to body ground with a jumper wire.

19. Check for continuity between PCM connector

terminal C43 and body ground.

Go to step 20.

Repair open in the wire between the PCM

(C43) and the IMT actuator, then go to step 25.

20. Check for continuity between PCM connector

terminal C44 and body ground.

Repair short in the wire between the PCM

(C44) and the IMT actuator, then go to step 25.

Go to step 21.

21. Connect IMT actuator 5P connector terminal No. 4

to body ground with a jumper wire.

Wire side of female terminals

Terminal side of female terminals

Wire side of female terminals

Is ther e continuity?

０７

−

YES

11-307

PCM CONNECTOR C (44P)

IMT
(WHT/RED)

22. Check for continuity between PCM connector

terminal C44 and body ground.

Go to step 23.

Repair open in the wire between the PCM

(C44) and the IMT actuator, then go to step 25.

23. Remove the IMT actuator (see page 11-316).

24. Move the IMT valve by hand.

Substitute a known-good IMT actuator

(see page 11-316), then go to step 25 and recheck. If
DTC P1077 is not indicated, replace the IMT
actuator (see page 11-316), then go to step 25. If
DTC P1077 is indicated, go to step 31.

Remove the intake manifold cover (see step 1

on page 9-3), and repair the stuck valve. If
necessary, replace the intake manifold (see page
9-2), then go to step 25.

25. Reconnect all connectors.

26. Turn the ignition switch ON (II).

27. Reset the PCM with the HDS.

28. Do the PCM idle learn procedure (see page 11-273).

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

Check for poor connections or loose

terminals at the IMT actuator and the PCM. If the
PCM was updated, substitute a known-good PCM
(see page 11-8), then recheck. If the PCM was
substituted, go to step 1.

Go to step 30.

30. Monitor the OBD STATUS for DTC P1077 in the

DTCs MENU with the HDS.

If the PCM was updated, troubleshooting is

complete. If the PCM was substituted, replace the
original PCM (see page 11-205). If any other
Temporary DTCs or DTCs were indicated in step 29,
go to the indicated DTC’s troubleshooting.

If the screen indicates FAILED, check for poor

connections or loose terminals at the IMT actuator
and the PCM. If the PCM was updated, substitute a
known-good PCM (see page 11-8), then recheck. If
the PCM was substituted, go to step 1. If the screen
indicates NOT COMPLETED, keep idling until a
result comes on.

31. Turn the ignition switch OFF.

32. Reconnect all connectors.

33. Update the PCM if it does not have the latest

software (see page 11-7), or substitute a known-
good PCM (see page 11-8).

(cont’d)

Terminal side of female terminals

Is ther e continuity?

Does it move smoothly?

Is DT C P107 7 indicated?

Does the scr een indicate PASSED?

Content .. 133 134 135 136 ..