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Honda Ridgeline. Manual - part 93

−

YES

11-136

PGM-FI System

DTC Troubleshooting (cont’d)

13. Test-drive under these conditions:

• Engine coolant temperature (ECT SENSOR 1)

above 158 °F (70 °C)

• Engine speed between 1,400 and 6,500 rpm
• Transmission in D position
• Vehicle speed decelerated from more than

50 mph (80 km/h) with the throttle fully closed for
at least 5 seconds

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

Check for poor connections or loose

terminals at the MAP sensor and the PCM, then go
to step 1.

Go to step 15.

15. Monitor the OBD STATUS for DTC P1129 in the

DTCs MENU with the HDS.

Troubleshooting is complete. If any other

Temporary DTCs or DTCs were indicated in step 14,
go to the indicated DTC’s troubleshooting.

If the screen indicates FAILED, check for poor

connections or loose terminals at the MAP sensor
and the PCM, then go to step 1. If the screen
indicates NOT COMPLETED, go to step 13.

Is DT C P1129 indicated?

Does the scr een indicate PASSED?

ＳＪＣ８Ａ００Ｋ７７１０００９１１７２ＦＡＡＴ００

−

DTC P1172:

DTC P1174:

YES

11-137

Rear A/F Sensor (Bank 1,

Sensor 1) Circuit Out of Range High

Front A/F Sensor (Bank 2,

Sensor 1) Circuit Out of Range High

NOTE:

• Before you troubleshoot, record all freeze data and

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

• Information marked with an asterisk ( ) applies to the

front bank (Bank 2).

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. 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.

4. Monitor the OBD STATUS for P1172 and/or P1174

in the DTCs MENU with the HDS.

Go to step 5.

If the screen indicates PASSED, intermittent

failure, the system is OK at this time. Check for
poor connections or loose terminals at the A/F
sensor (Sensor 1) and the PCM. If the screen
indicates EXECUTING, keep driving until a result
comes on. If the screen indicates OUT OF
CONDITION, go to step 3 and recheck.

5. Turn the ignition switch OFF.

6. Replace the A/F sensor (Sensor 1) (see page

11-199).

7. Turn the ignition switch ON (II).

8. Reset the PCM with the HDS.

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

10. 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.

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

Check for poor connections or loose

terminals at the A/F sensor (Sensor 1) and the PCM,
then go to step 1.

Go to step 12.

12. Monitor the OBD STATUS for DTC P1172 and/or

P1174 in the DTCs MENU with the HDS.

Troubleshooting is complete. If any other

Temporary DTCs or DTCs were indicated in step 11,
go to the indicated DTC’s troubleshooting.

If the screen indicates FAILED, check for poor

connections or loose terminals at the A/F sensor
(Sensor 1) and the PCM, then go to step 1. If the
screen indicates EXECUTING or OUT OF
CONDITION, keep idling until a result comes on.

Does the scr een indicate F AILED?

Is DT C P117 2 and/ or P117 4 indicated?

Does the scr een indicate PASSED?

０１

ＳＪＣ８Ａ００Ｋ７７１０００９１２９７ＦＡＡＴ３０

−

DTC P1297:

YES

11-138

PGM-FI System

DTC Troubleshooting (cont’d)

PCM CONNECTOR A (44P)

ELD (BLU/BLK)

ELD 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 the ELD 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 the ELD and the PCM.

3. Turn the ignition switch OFF.

4. Disconnect the ELD 3P connector.

5. Turn the ignition switch ON (II).

6. Check the ELD 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 (44P).

10. Check for continuity between PCM connector

terminal A23 and body ground.

Repair short in the wire between the PCM

(A23) and the ELD, then go to step 13.

Go to step 19.

11. Turn the ignition switch OFF.

12. Replace the under-hood fuse/relay box (see page

22-72).

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. Start the engine.

18. Turn on the headlights.

Terminal side of female terminals

Is 7 2 A or mor e indicated?

Is ther e continuity?

−

YES

11-139

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

Check for poor connections or loose

terminals at the ELD unit 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.

20. Reconnect all connectors.

21. 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).

22. Start the engine.

23. Turn on the headlights.

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

Check for poor connections or loose

terminals at the ELD unit and the PCM. If the PCM
was updated, substitute a known-good PCM
(see page 11-8), then go to step 22. 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 P1297 indicated?

Content .. 91 92 93 94 ..