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Honda Ridgeline. Manual - part 114

０３

−

YES

11-220

Electronic Throttle Control System

DTC Troubleshooting (cont’d)

PCM CONNECTOR C (44P)

IG1ETCS (YEL/GRN)

9. Disconnect PCM connector C (44P).

10. Turn the ignition switch ON (II).

11. Measure voltage between PCM connector terminal

C4 and body ground.

Repair short to power in the wire between

the PCM (C4) and the ETCS control relay, then go to
step 12.

Go to step 18.

12. Turn the ignition switch OFF.

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 the ETCS control relay 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.

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 the ETCS control relay 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 batter y voltage?

Is DT C P1658 indicated?

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ＳＪＣ８Ａ００Ｋ７７１０００９１６５９ＦＡＡＴ００

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DTC P1659:

YES

11-221

ETCS CONTROL RELAY 4P CONNECTOR

IGP

Electronic Throttle Control

System (ETCS) Control Relay OFF
Malfunction

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. Check for Temporary DTCs or DTCs with the HDS.

Go to step 4.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at the ETCS control relay and the PCM.

4. Turn the ignition switch OFF.

5. Check the No. 9 DBW (THROTTLE ACTUATOR

CONTROL) (15 A) fuse in the under-hood fuse/relay
box.

Go to step 6.

Go to step 20.

6. Remove the ETCS control relay (A) from the under-

hood fuse/relay box.

7. Test the ETCS control relay (see page 22-75).

Go to step 8.

Replace the ETCS control relay, then go to

step 28.

8. Turn the ignition switch ON (II).

9. Measure voltage between ETCS control relay 4P

connector terminal No. 4 and body ground.

Go to step 10.

Repair open in the wire between PGM-FI main

relay 1 (FI MAIN) and the ETCS control relay, then
go to step 27.

(cont’d)

Terminal side of female terminals

Is DT C P1659 indicated?

Is the f use OK ?

Is the ET CS contr ol r elay OK ?

Is ther e batter y voltage?

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０４

０５

＋

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YES

11-222

Electronic Throttle Control System

DTC Troubleshooting (cont’d)

ETCS CONTROL RELAY 4P CONNECTOR

IG1 ETCS

JUMPER WIRE

ETCS CONTROL RELAY 4P CONNECTOR

PCM CONNECTOR C (44P)

IG1ETCS (YEL/GRN)

10. Measure voltage between ETCS control relay 4P

connector terminal No. 1 and body ground.

Go to step 11.

Repair open in the wire between the ETCS

control relay and the No. 9 DBW (THROTTLE
ACTUATOR CONTROL) (15 A) fuse in the under-
hood fuse/relay box, then go to step 27.

11. Turn the ignition switch OFF.

12. Jump the SCS line with the HDS.

13. Disconnect PCM connector C (44P).

14. Connect ETCS control relay 4P connector terminal

No. 2 to body ground with a jumper wire.

15. Check for continuity between PCM connector

terminal C4 and body ground.

Go to step 16.

Repair open in the wire between the PCM (C4)

and the ETCS control relay, then go to step 28.

Terminal side of female terminals

Is the batter y voltage?

Is ther e continuity?

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０７

０８

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YES

11-223

ETCSRLY

JUMPER WIRE

ETCS CONTROL RELAY 4P CONNECTOR

PCM CONNECTOR A (44P)

ETCSRLY
(BRN)

PCM CONNECTOR C (44P)

IG1ETCS (YEL/GRN)

16. Remove the jumper wire.

17. Disconnect PCM connector A (44P).

18. Connect ETCS control relay 4P connector terminal

No. 4 to body ground with a jumper wire.

19. Check for continuity between PCM connector

terminal A20 and body ground.

Go to step 33.

Repair open in the wire between the PCM

(A20) and the ETCS control relay, then go to
step 28.

20. Remove the blown No. 9 DBW (THROTTLE

ACTUATOR CONTROL) (15 A) fuse in the under-
hood fuse/relay box.

21. Jump the SCS line with the HDS.

22. Disconnect PCM connector C (44P).

23. Check for continuity between PCM connector

terminal C4 and body ground.

Go to step 24.

Replace the No. 9 DBW (THROTTLE

ACTUATOR CONTROL) (15 A) fuse, then go to
step 28.

(cont’d)

Terminal side of female terminals

Is ther e continuity?

Content .. 112 113 114 115 ..