Honda Ridgeline. Manual — part 121
01
SJC8A00A20324112947MAAT00
11-248
Electronic Throttle Control System
APP Sensor Signal Inspection
A
NOTE:
• This procedure checks the APP sensor in its fully
closed position. In any other position, the APP sensor
stores DTCs which are covered in other
troubleshooting procedure.
• Check for Temporary DTCs or DTCs with the HDS
before doing this procedure. If any DTCs are
indicated, troubleshoot them first, then do this
procedure.
• Press the accelerator pedal several times to check its
operation. If it does not operate smoothly, check the
pedal, the throttle cable, and the APP sensor
individually. If you find a problem in one of them,
replace the part(s) that caused the problem.
1. Connect the HDS to the data link connector (DLC)
(A) located under the driver’s side of the dashboard.
2. Turn the ignition switch ON (II).
3. Make sure the accelerator pedal is not pressed,
then check the APP SENSOR in the DATA LIST with
the HDS.
• If it is below 2 %, the APP sensor is OK.
• If it is above 2 %, adjust the throttle cable
(see page 11-317), then go to step 4.
4. Make sure the accelerator pedal is not pressed,
then check the APP SENSOR in the DATA LIST with
the HDS.
• If it is below 2 %, the APP sensor is OK.
• If it is above 2 %, 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),
then go to step 5.
5. Make sure the accelerator pedal is not pressed,
then check the APP SENSOR in the DATA LIST with
the HDS.
• If it is below 2 %, the APP sensor is OK.
• If it is above 2 %, replace the APP sensor
(see page 11-249), then go to step 1.
01
SJC8A00A20324112947KBAT01
11-249
APP Sensor Replacement
A
B
C
B
1. Remove the throttle cable (see page 11-317).
2. Disconnect the accelerator pedal position (APP)
sensor 6P connector (A).
3. Remove the bolts (B) and the APP sensor (C).
4. Install the parts in the reverse order of removal.
*01
SJC8A00A14680300000DAAT00
11-250
VTEC
Component Location Index
ROCKER ARM OIL PRESSURE SWITCH
(VTEC OIL PRESSURE SWITCH)
ROCKER ARM OIL CONTROL SOLENOID
(VTEC SOLENOID VALVE)
POWERTRAIN CONTROL MODULE (PCM)
Removal/Installation, page 11-261
Replacement, page 11-261
Update, page 11-7
Substitution, page 11-8
Replacement, page 11-205
*01
SJC8A00K77100092646FAAT30
−
−
−
−
−
−
DTC P2646:
Special Tools Required
YES
NO
YES
NO
YES
NO
11-251
DTC Troubleshooting
07406-0070301
07ZAJ-S5A0200
07406-0020201 or
07MAJ-PY4011A and
07MAJ-PY40120
A
22 N·m
(2.2 kgf·m,
16 lbf·ft)
B
07NAJ-P07010A
Rocker Arm Oil Pressure Switch
(VTEC Oil Pressure Switch) Circuit Low
Voltage
• Pressure gauge adapter 07NAJ-P07010A
• A/T low pressure gauge w/panel 07406-0070301
• A/T pressure hose 07406-0020201
• A/T pressure hose, 2,210 mm 07MAJ-PY4011A
• A/T pressure adapter 07MAJ-PY40120
• Oil pressure hose 07ZAJ-S5A0200
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Check the engine oil level.
Go to step 2.
Adjust the engine oil to the proper level, then
go to step 20.
2. Turn the ignition switch ON (II).
3. Clear the DTC with the HDS.
4. Do the VTEC TEST in the INSPECTION MENU with
the HDS.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the rocker arm oil pressure switch (VTEC oil
pressure switch), the rocker arm oil control
solenoid (VTEC solenoid valve), and the PCM.
Go to step 5.
5. Turn the ignition switch OFF.
6. Disconnect the rocker arm oil pressure switch
(VTEC oil pressure switch) 2P connector.
7. Turn the ignition switch ON (II).
8. Check the VTEC PRES SW in the DATA LIST with
the HDS.
Go to step 15.
Go to step 9.
9. Turn the ignition switch OFF.
10. Remove the rocker arm oil pressure switch (VTEC
oil pressure switch) (A), install the special tools as
shown, then install the rocker arm oil pressure
switch (VTEC oil pressure switch) on the oil
pressure gauge adapter (B).
NOTE: Install the parts in the reverse order of
removal with a new O-ring.
11. Start the engine.
12. Do the VTEC TEST in the INSPECTION MENU with
the HDS.
(cont’d)
Is the level OK ?
Is the r esult OK ?
Is ON indicated?
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