Acura CSX. Manual — part 138
01
03
02
03
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11-226
PGM-FI System
ELD Replacement
A
A
A
B
C
D
A
A
A
A
1. Remove the ECM/PCM (see page 11-228).
2. Remove the under-hood fuse/relay box (see page
22-65).
3. Remove the screw (A).
4. Turn the housing over, then remove the screw (A).
5. Turn the housing over again, using two flat-tip
screwdrivers, release the tabs (A), and pry up the
fuse/relay box base (B) from the fuse/relay box
housing (C).
NOTE: Make sure the terminals (D) are not bent or
damaged.
6. Remove the ELD (A).
7. Install the parts in the reverse order of removal.
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07
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Special Tools Required
11-227
ECM/PCM Update
A
• Honda diagnostic system (HDS) tablet tester
• Honda interface module (HIM) and an iN workstation
with the latest HDS software version
• HDS pocket tester
• GNA 600 and iN workstation with the latest HDS
software version
Any one of the above updating tools can be used.
NOTE:
• Make sure the HDS/iN workstation has the latest HDS
software version.
• Before you update the ECM/PCM, make sure the
battery in the vehicle is fully charged, and connect a
jumper battery (not a battery charger) to maintain
system voltage.
• Never turn the ignition switch to LOCK (0) or ACC (I)
during the update. If there is a problem with the
update, leave the ignition switch to ON (II).
• To prevent ECM/PCM damage, do not operate
anything electrical (headlights, audio system, brakes,
A/C, power windows, moonroof (if equipped), door
locks, etc.) during the update.
• To ensure the latest program is installed, do an ECM/
PCM update whenever the ECM/PCM is substituted or
replaced.
• You cannot update an ECM/PCM with a program it
already has. It will only accept a new program.
• High temperature in the engine compartment might
cause the ECM/PCM to become too hot to run the
update. If the engine was running before this
procedure, open the hood, and cool the engine
compartment.
• If you need to diagnose the Honda interface module
(HIM) because the HIM’s red (
3) light came on or
was flashing during the update, leave the ignition
switch in ON (II) when you disconnect the HIM from
the data link connector (DLC). This will prevent ECM/
PCM damage.
1. Turn the ignition switch to ON (II), but do not start
the engine.
2. Connect the HDS to the data link connector (DLC)
(A) located under the driver’s side of the dashboard.
3. Make sure the HDS communicates with the ECM/
PCM. If it doesn’t, go to the DLC circuit
troubleshooting (see page 11-204). If you are
returning from the DLC circuit troubleshooting, skip
steps 4 to 5 and clean the throttle body after
updating the ECM/PCM (see page 11-344).
4. Select the INSPECTION MENU with the HDS.
5. Select the ETCS TEST, then select the TP POSITION
CHECK, and follow the HDS screen prompts.
NOTE: If the TP POSITION CHECK indicates FAILED,
continue this procedure.
6. Exit the HDS diagnostic system, then select the
update mode, and follow the screen prompts to
update the ECM/PCM.
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Special Tools Required
11-228
11-228
PGM-FI System
ECM/PCM Replacement
A
7. If the software in the ECM/PCM is the latest,
disconnect the HDS/HIM from the DLC, and go back
to the procedure that you were doing. If the
software in the ECM/PCM is not the latest, follow
the instructions on the screen. If prompted to
choose the PGM-FI system or the A/T system (A/T),
make sure you update both.
NOTE: If the ECM/PCM update system requires you
to cool the ECM/PCM, follow the instructions on the
screen. If you have a problem during the update
(programming takes over 15 minutes, status bar
goes over 100 %, D (A/T) or immobilizer indicator
flashes, HDS tablet freezes, etc.), follow these steps
to minimize the chance of damaging the ECM/PCM:
• Leave the ignition switch in ON (II).
• Connect a jumper battery (do not connect a
battery charger).
• Shut down the HDS.
• Disconnect the HDS from the DLC.
• Reboot the HDS.
• Reconnect the HDS to the DLC, and do the update
again.
8. If the TP POSITION CHECK failed in step 5, clean
the throttle body (see page 11-344).
9. Do the ECM/PCM idle learn procedure (see page
11-310).
10. Do the CKP pattern clear/CKP pattern learn
procedure (see page 11-4).
• Honda diagnostic system (HDS) tablet tester
• Honda interface module (HIM) and an iN workstation
with the latest HDS software version
• HDS pocket tester
• GNA 600 and an iN workstation with the latest HDS
software version
Any one of the above updating tools can be used.
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 to ON (II).
08/08/21 14:23:40 61SNR030_110_0228
01
SNR9AA7A20326924601KBAT00
Special Tools Required
11-228
11-228
PGM-FI System
ECM/PCM Replacement
A
7. If the software in the ECM/PCM is the latest,
disconnect the HDS/HIM from the DLC, and go back
to the procedure that you were doing. If the
software in the ECM/PCM is not the latest, follow
the instructions on the screen. If prompted to
choose the PGM-FI system or the A/T system (A/T),
make sure you update both.
NOTE: If the ECM/PCM update system requires you
to cool the ECM/PCM, follow the instructions on the
screen. If you have a problem during the update
(programming takes over 15 minutes, status bar
goes over 100 %, D (A/T) or immobilizer indicator
flashes, HDS tablet freezes, etc.), follow these steps
to minimize the chance of damaging the ECM/PCM:
• Leave the ignition switch in ON (II).
• Connect a jumper battery (do not connect a
battery charger).
• Shut down the HDS.
• Disconnect the HDS from the DLC.
• Reboot the HDS.
• Reconnect the HDS to the DLC, and do the update
again.
8. If the TP POSITION CHECK failed in step 5, clean
the throttle body (see page 11-344).
9. Do the ECM/PCM idle learn procedure (see page
11-310).
10. Do the CKP pattern clear/CKP pattern learn
procedure (see page 11-4).
• Honda diagnostic system (HDS) tablet tester
• Honda interface module (HIM) and an iN workstation
with the latest HDS software version
• HDS pocket tester
• GNA 600 and an iN workstation with the latest HDS
software version
Any one of the above updating tools can be used.
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 to ON (II).
08/08/21 14:23:40 61SNR030_110_0228
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