Cruise Control Input Test - Honda Accord 2008 Manual

07/11/02 09:06:11 61TA0000_040_0046

Cruise Control Input Test

1. Connect the Honda Diagnostic System (HDS) to the data link connector (DLC) (see step 2 on page 11-3).
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the vehicle and the engine control module (ECM)/powertrain control
module (PCM). If it doesn't communicate, troubleshoot the DLC circuit (see page 11-208).
4. Go to PGM-FI, and check for DTCs (see page 11-3).
5. Do the following tests while monitoring parameters in the PGM-FI DATA LIST with the HDS.
NOTE: Intermittent failures are often caused by loose circuit connections. While monitoring cruise control inputs,
flex their circuits, and note if any of the test results change.
Signal to be tested
Brake pedal
position
switch signal
Clutch pedal
position
switch signal
(M/T model)
Transmission
range switch
signal (A/T
model)
Cruise control
main switch
signal
Set switch
signal
ＴＡ０８ＡＥ４Ａ１４５００００００００ＦＣＡＴ００
Test condition Parameter: Desired result
Brake pedal pressed, CRUISE BRAKE SW
then released should indicate OFF
when the brake pedal is
pressed and ON when
the brake pedal is
released.
Clutch pedal pressed, SHIFT/CLUTCH SW
then released should indicate ON
when the clutch pedal
is pressed and OFF
when the clutch pedal
is released.
Shift lever in D and SHIFT/CLUTCH SW
D3 should indicate ON in P,
R, N, 2, and 1 and OFF
in D and D3.
Cruise control main CRUISE CONTROL
switch ON and OFF MAIN SW should
indicate ON when the
cruise control main
switch is turned ON
and OFF when the
cruise control main
switch is turned OFF.
Set/decel switch CRUISE CONTROL SET
pressed and released SW should indicate ON
when the set/decel
switch is pressed and
OFF when the set/decel
switch is released.
Possible cause if result is not obtained
• Faulty brake pedal position switch
• Blown No. 7 (15 A) fuse in the driver's
under-dash fuse/relay box
• An open in the wire between the ECM/
PCM and the brake pedal position switch
• A wire shorted to ground between the
ECM/PCM and the brake pedal position
switch
• Faulty clutch pedal position switch
• An open in the wire between the ECM
and the clutch pedal position switch
• A wire shorted to ground between the
ECM and the brake pedal position switch
• Poor ground G302
• Faulty transmission range switch
• An open in the wire between the PCM
and the transmission range switch
• A wire shorted to ground between the
PCM and the transmission range switch
• Poor ground G101
• Faulty cruise control main switch
• An open in the wire between the gauge
control module and the cruise control
main switch
• A wire shorted to ground between the
gauge control module and the cruise
control main switch
Faulty cruise control combination switch
•
• An open in the wire between the gauge
control module and the cruise control
combination switch
• A wire shorted to ground between the
gauge control module and the cruise
control combination switch
(cont'd)
4-45