Honda Ridgeline. Manual — part 124
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YES
NO
YES
NO
YES
NO
YES
NO
11-260
VTEC
DTC Troubleshooting (cont’d)
11. Replace the rocker arm oil control solenoid (VTEC
solenoid valve) (see page 11-261).
12. Reconnect all connectors.
13. Turn the ignition switch ON (II).
14. Reset the PCM with the HDS.
15. Do the PCM idle learn procedure (see page 11-273).
16. 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.
17. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the rocker arm oil control solenoid
(VTEC solenoid valve) and the PCM, then go to step
1.
Go to step 18.
18. Monitor the OBD STATUS for DTC P2649 in the
DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 17,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the rocker arm oil
control solenoid (VTEC solenoid valve) and the
PCM, then go to step 1. If the screen indicates NOT
COMPLETED, keep idling until a result comes on.
19. Reconnect all connectors.
20. 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).
21. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the rocker arm oil control solenoid
(VTEC solenoid valve) 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 22.
22. Monitor the OBD STATUS for DTC P2649 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 21,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the rocker arm oil
control solenoid (VTEC solenoid valve) 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.
Is DT C P2649 indicated?
Does the scr een indicate PASSED?
Is DT C P2649 indicated?
Does the scr een indicate PASSED?
01
SJC8A00A14680351516KBAT20
01
SJC8A00A14680351518KDAT00
11-261
11-261
Rocker Arm Oil Control Solenoid
(VTEC Solenoid Valve)
Replacement
Rocker Arm Oil Pressure Switch
(VTEC Oil Pressure Switch)
Removal/Installation
B
C
12 N·m
(1.2 kgf·m,
8.7 lbf·ft)
A
B
22 N·m
(2.2 kgf·m,
16 lbf·ft)
C
A
1. Disconnect the rocker arm oil control solenoid
(VTEC solenoid valve) connector (A).
2. Remove the rocker arm oil control solenoid (VTEC
solenoid valve) (B).
3. Install the parts in the reverse order of removal
with a new O-ring (C).
1. Disconnect the rocker arm oil pressure switch
(VTEC oil pressure switch) connector (A), then
remove the rocker arm oil pressure switch (VTEC
oil pressure switch) (B).
2. Install the parts in the reverse order of removal
with a new O-ring (C).
*01
*02
SJC8A00A20336100000DAAT00
11-262
Idle Control System
Component Location Index
ALTERNATOR
A/C COMPRESSOR
POWERTRAIN CONTROL
MODULE (PCM)
POWER STEERING PRESSURE (PSP) SWITCH
BRAKE PEDAL POSITION SWITCH
FR Signal Circuit
Troubleshooting, page 11-267
Signal Circuit Troubleshooting, page 11-266
Update, page 11-7
Substitution, page 11-8
Replacement, page 11-205
Signal Circuit Troubleshooting, page 11-268
Signal Circuit Troubleshooting, page 11-270
SJC8A00K77100090506FAAT30
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DTC P0506:
YES
NO
YES
NO
YES
NO
YES
NO
11-263
DTC Troubleshooting
Idle Control System RPM Lower
Than Expected
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. 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. Check for these conditions in the DATA LIST with
the HDS:
• ECT SENSOR 1 above 158 °F (70 °C)
• IAT SENSOR above 32 °F (0 °C)
• Vehicle speed is 0 mph (0 km/h)
• ST FUEL TRIM between 0.73 and 1.47
• FSS is CLOSED
5. Monitor the OBD STATUS for DTC P0506 in the
DTCs MENU with the HDS.
Go to step 6.
If the screen indicates PASSED, go to step 8. If
the screen indicates EXECUTING, let the engine
idle until a result comes on. If the screen indicates
OUT OF CONDITION, go to step 4 and recheck.
6. Remove the intake air duct from the throttle body.
7. Check for dirt, carbon, or damage in the throttle
bore.
If there is dirt or carbon, clean the throttle
body (see page 11-314). Also check for damage to
the air cleaner element (see page 11-315), then go
to step 13. If there is damage in the throttle bore, go
to step 12.
Check the A/C system or power steering
system, then go to step 10.
8. Remove the intake air duct from the throttle body.
9. Check for dirt, carbon, or damage in the throttle
bore.
If there is dirt or carbon, clean the throttle
body (see page 11-314). Also check for damage to
the air cleaner element (see page 11-315), then go
to step 13. If there is damage in the throttle bore, go
to step 12.
Go to step 10.
10. Recheck with different load conditions (turn on the
headlights, blower motor, or A/C; change the gear
position, etc.).
11. Monitor the OBD STATUS for DTC P0506 in the
DTCs MENU with the HDS.
Intermittent failure, the system is OK at this
time.
If the screen indicates FAILED, check the A/C
system and/or power steering system, then go to
step 1 and recheck. If the screen indicates
EXECUTING, let the engine idle until a result comes
on. If the screen indicates OUT OF CONDITION, go
to step 10 and recheck.
(cont’d)
Does the scr een indicate F AILED?
Is ther e dir t, car bon, or damage in the thr ottle
bor e?
Is ther e dir t, car bon, or damage in the thr ottle
bor e?
Does the scr een indicate PASSED?
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