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Honda Ridgeline. Manual - part 96

−

YES

11-148

PGM-FI System

DTC Troubleshooting (cont’d)

19. Turn the ignition switch OFF.

20. Drain the coolant (see page 10-6).

21. Remove ECT sensor 1 (see page 11-201), and ECT

sensor 2 (see page 11-201).

22. Allow the sensors to cool to ambient temperature.

23. Note the ambient temperature.

24. Connect ECT sensor 1 to its 2P connector, and ECT

sensor 2 to its 2P connector, but do not install them
on the engine.

25. Note the value of ECT SENSOR 1 and ECT

SENSOR 2 quickly in the DATA LIST with the HDS.

26. Compare the value of ECT SENSOR 1 and the

ambient temperature, and the value of ECT
SENSOR 2 and the ambient temperature
individually.

Replace the sensor that differed more than

5.4 °F (3 °C) from the ambient temperature, then go
to step 27.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at ECT sensor 1, ECT sensor 2, and the PCM.

27. Turn the ignition switch ON (II).

28. Reset the PCM with the HDS.

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

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

Check for poor connections or loose

terminals at ECT sensor 1, ECT sensor 2, 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.

Does one of the sensor dif f er mor e than 5.4 °F
( 3 °C) f r om the ambient temper atur e?

Is DT C P2183 indicated?

＊０１

ＳＪＣ８Ａ００Ｋ７７１０００９２１８４ＦＡＡＴ００

−

DTC P2184:

YES

11-149

ECT SENSOR 2 2P CONNECTOR

ECT2 (GRN/RED)

ECT Sensor 2 Circuit Low Voltage

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. Check ECT SENSOR 2 in the DATA LIST with the

HDS.

Go to step 3.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at ECT sensor 2 and the PCM.

3. Turn the ignition switch OFF.

4. Disconnect the ECT sensor 2 2P connector.

5. Turn the ignition switch ON (II).

6. Check ECT SENSOR 2 in the DATA LIST with the

HDS.

Go to step 7.

Go to step 11.

7. Turn the ignition switch OFF.

8. Jump the SCS line with the HDS.

9. Disconnect PCM connector A (49P).

10. Check for continuity between ECT sensor 2 2P

connector terminal No. 1 and body ground.

Repair short in the wire between ECT

sensor 2 and the PCM (A21), then go to step 13.

Go to step 18.

11. Turn the ignition switch OFF.

12. Replace ECT sensor 2 (see page 11-201).

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. Check for Temporary DTCs or DTCs with the HDS.

Check for poor connections or loose

terminals at ECT sensor 2 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.

(cont’d)

Wire side of female terminals

Is about 356 °F ( 180 °C) or mor e, or 0.08 V or less
indicated?

Is ther e continuity?

Is DT C P2184 indicated?

−

YES

11-150

PGM-FI System

DTC Troubleshooting (cont’d)

18. Reconnect all connectors.

19. 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).

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

Check for poor connections or loose

terminals at ECT sensor 2 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 P2184 indicated?

−

０１

０２

ＳＪＣ８Ａ００Ｋ７７１０００９２１８５ＦＡＡＴ００

−

DTC P2185:

YES

11-151

ECT SENSOR 2 2P CONNECTOR

ECT2 (GRN/RED)

SG2 (GRN/YEL)

JUMPER WIRE

ECT SENSOR 2 2P CONNECTOR

ECT2 (GRN/RED)

ECT Sensor 2 Circuit High

Voltage

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. Check ECT SENSOR 2 in the DATA LIST with the

HDS.

Go to step 3.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at ECT sensor 2 and the PCM.

3. Turn the ignition switch OFF.

4. Disconnect the ECT sensor 2 2P connector.

5. Connect ECT sensor 2 2P connector terminals No. 1

and No. 2 with a jumper wire.

6. Turn the ignition switch ON (II).

7. Check ECT SENSOR 2 in the DATA LIST with the

HDS.

Go to step 8.

Go to step 20.

8. Turn the ignition switch OFF.

9. Remove the jumper wire from the ECT sensor 2 2P

connector.

10. Turn the ignition switch ON (II).

11. Measure voltage between ECT sensor 2 2P

connector terminal No. 1 and body ground.

Go to step 12.

Go to step 16.

12. Turn the ignition switch OFF.

13. Jump the SCS line with the HDS.

14. Disconnect PCM connector C (44P).

(cont’d)

Wire side of female terminals

Is about

40 °F (

40 °C) or less, or 4.92 V or

mor e indicated?

Is about

40 °F (

40 °C) or less, or 4.92 V or

mor e indicated?

Is ther e about 5 V ?

Content .. 94 95 96 97 ..