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Honda Ridgeline. Manual - part 120

０１

ＳＪＣ８Ａ００Ｋ７７１０００９２１３８ＦＡＡＴ３０

−

DTC P2138:

YES

11-244

Electronic Throttle Control System

DTC Troubleshooting (cont’d)

PCM CONNECTOR A (44P)

APSB (YEL)

APSA (ORN)

APP Sensor A/B (Throttle

Position Sensor D/E) Incorrect Voltage
Correlation

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 HDS.

3. Press the accelerator pedal to the floor.

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

Go to step 5.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at APP sensor A/B and the PCM.

5. Check APP SENSOR A and APP SENSOR B in the

DATA LIST with the HDS.

Go to step 6.

Go to step 11.

6. Turn the ignition switch OFF.

7. Jump the SCS line with the HDS.

8. Disconnect APP sensor A/B 6P connector.

9. Disconnect PCM connector A (44P).

10. Check for continuity between PCM connector

terminals A17 and A18.

Repair short in the wire between the PCM

terminals (A17, A18), then go to step 13.

Go to step 21.

11. Turn the ignition switch OFF.

12. Replace the APP sensor (see page 11-249).

13. Reconnect all connectors.

14. Turn the ignition switch ON (II).

15. Reset the PCM with the HDS.

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

17. Turn the ignition switch OFF.

18. Turn the ignition switch ON (II).

19. Press the accelerator pedal to the floor.

Terminal side of female terminals

Is DT C P2138 indicated?

Ar e they the same voltage?

Is ther e continuity?

−

YES

11-245

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

Check for poor connections or loose

terminals at the APP sensor and the PCM, then
clean the throttle body (see page 11-314), and go to
step 1.

Troubleshooting is complete. If any other

Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.

21. Reconnect all connectors.

22. 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).

23. Turn the ignition switch OFF.

24. Turn the ignition switch ON (II).

25. Press the accelerator pedal to the floor.

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

Check for poor connections or loose

terminals at the APP sensor 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 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 are indicated, go to the
indicated DTC’s troubleshooting.

Is DT C P2138 indicated?

０１

ＳＪＣ８Ａ００Ｋ７７１０００９２１７６ＦＡＡＴ３０

−

＋

−

DTC P2176:

YES

11-246

Electronic Throttle Control System

DTC Troubleshooting (cont’d)

THROTTLE BODY 6P CONNECTOR

ETCSM

(GRN)

ETCSM

(BLU)

JUMPER WIRE

Throttle Actuator Control System

Idle Position Not Learned

Do not insert your fingers into the installed throttle
body when you turn the ignition switch ON (II) or
while the ignition switch is ON (II). If you do, you
will seriously injure your fingers if the throttle valve
is activated.

NOTE:

• Before you troubleshoot, record all freeze data and

any on-board snapshot, and review the general
troubleshooting information (see page 11-3).

• If DTC P2135 is stored at the same time as DTC P2176,

troubleshoot DTC P2135 first, then recheck for DTC
P2176.

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch OFF.

4. Turn the ignition switch ON (II), and wait

10 seconds.

5. Check for Temporary DTCs or DTCs 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 throttle body and the PCM, then clean the
throttle body (see page 11-314).

6. Turn the ignition switch OFF.

7. Disconnect the intake air duct from the throttle

body.

8. Turn the ignition switch ON (II).

9. Clear the DTC with the HDS.

10. Visually check the throttle valve operation while

doing the ETCS TEST in the INSPECTION MENU
with the HDS.

Go to step 11.

Go to step 12.

11. Check for sludge or carbon on the throttle valve.

Clean the throttle body (see page 11-314),

then go to step 21.

Go to step 18.

12. Turn the ignition switch OFF.

13. Disconnect the throttle body 6P connector.

14. Jump the SCS line with the HDS.

15. Disconnect PCM connector C (44P).

16. Connect throttle body 6P connector terminals No. 5

and No. 6 with a jumper wire.

Wire side of female terminals

Is DT C P217 6 indicated?

Does the thr ottle valve move to its f ully closed
position?

Is ther e sludge or car bon on the thr ottle valve?

０２

−

＋

−

YES

11-247

ETCSM

(GRN)

ETCSM

(BLU)

PCM CONNECTOR C (44P)

17. Check for continuity between PCM connector

terminals C2 and C3.

Go to step 27.

Repair open in the wires between the throttle

body and the PCM (C2, C3), then go to step 20.

18. Turn the ignition switch OFF.

19. Replace the throttle body (see page 11-319).

20. Reconnect all connectors.

21. Turn the ignition switch ON (II).

22. Reset the PCM with the HDS.

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

24. Turn the ignition switch OFF.

25. Turn the ignition switch ON (II), and wait

10 seconds.

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

Check for poor connections or loose

terminals at the throttle body and the PCM, then go
to step 1.

Troubleshooting is complete. If any other

Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.

27. Reconnect all connectors.

28. 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).

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

Check for poor connections or loose

terminals at the throttle body 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 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 are indicated, go to the
indicated DTC’s troubleshooting.

Terminal side of female terminals

Is ther e continuity?

Is DT C P217 6 indicated?

Content .. 118 119 120 121 ..