ACURA CSX 2006 Service Repair Manual


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11-218PGM-FI System
DLC Circuit Troubleshooting (cont’d)
ECM/PCM CONNECTOR A (44P)
VCC5 (GRY) ECM/PCM CONNECTOR A (44P)
VCC6
(RED)
85. Check for continuity between ECM/PCM connectorterminal A24 and body ground.
Go to step 86.
Go to step 87.
86. Continue to check for continuity between ECM/PCM connector terminal A24 and body ground, while
disconnecting the APP sensor 6P connector.
Repair short in the wire between the ECM/
PCM (A24) and the APP sensor.
Replace the accelerator pedal module; K20Z2
engine (see page 11-269), K20Z3 engine (see page
11-270). 87. Check for continuity between ECM/PCM connector
terminal A19 and body ground.
Go to step 88.
Update the ECM/PCM if it does not have the
latest software (see page 11-227), or substitute a
known-good ECM/PCM (see page 11-7), then
recheck. If the symptom/indication goes away with
a known-good ECM/PCM, replace the original ECM/
PCM (see page 11-228).
88. Continue to check for continuity between ECM/PCM connector terminal A19 and body ground, while
disconnecting these parts, one at a time:
 A/C pressure sensor 3P connector
 FTP sensor 3P connector
Replace the part that caused an open when it
was disconnected.
Repair short in the wire between the ECM/
PCM (A19) and the A/C pressure sensor or the FTP
sensor.
Terminal side of female terminals Terminal side of female terminals
Is there continuity?
Is there continuity? Is there continuity?
Does cont i nui t y go aw ay w hen one of t he abov econnect or s i s d i sconnect ed ?
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11-219
Injector Replacement
A BC
D
E
F
1. Relieve fuel pressure (see page 11-322).
2. Remove the engine cover.
3. Disconnect the injector connectors (A) from the injectors.
4. Remove the ground cable bolt (G101) (B).
5. Disconnect the quick-connect fitting (C).
6. Remove the fuel rail mounting nuts (D) from the fuel rail (E).
7. Remove the fuel rail and the injectors from the injector base.
8. Remove the injector clips (F) from the injectors.
9. Remove the injectors from the fuel rail.
(cont’d)
* : This illustration shows K20Z2 engine
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11-220PGM-FI System
Injector Replacement (cont’d)
A
B
C
D
E
F G
22 N·m
(2.2 kgf·m, 16 lbf·ft)
10. Coat the new O-rings (A) with clean engine oil, and insert the injectors (B) into the fuel rail (C).
11. Install the injector clips (D).
12. Coat the injector O-rings (E) with clean engine oil.
13. Install the fuel rail and the injectors in the injector base (F).
14. Install the fuel rail mounting nuts (G).
15. Connect the connectors on the injectors, and reinstall the ground cable bolt (G
101).
16. Connect the quick-connect fittings.
17. Turn the ignition switch to ON (II), but do not operate the starter. After the fuel pump runs for about 2 seconds, the fuel rail is pressurized. Repeat this two or three times, then check for fuel leakage.
18. Install the engine cover.
* : This illustration shows K20Z2 engine
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Special Tools Required Special Tools Required
11-22111-221
A/F Sensor Replacement
Secondary HO2S Replacement
C
44 N·m
(4.5 kgf·m,
33 lbf·ft)
A
B
C
44 N·m
(4.5 kgf·m, 33 lbf·ft)A
B
O2 sensor wrench, Snap-on YA8875 or SWR2, or
equivalent, commercially available
1. Disconnect the A/F sensor 4P connector (A) and remove the clamp (B), then remove the A/F sensor
(C).
2. Install the parts in the reverse order of removal. O2 sensor wrench, Snap-on YA8875 or SWR2, or
equivalent, commercially available
1. Disconnect the secondary HO2S 4P connector (A) and remove the clamps (B), then remove the
secondary HO2S (C).
2. Install the parts in the reverse order of removal.
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11-22211-222 PGM-FI System
CMP Sensor B Replacement
CKP Sensor Replacement
C
B
A 12 N·m
(1.2 kgf·m,
8.7 lbf·ft)
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
A B
C
1. Remove the air cleaner (see page 11-345).
2. K20Z2 engine: Remove the EGR valve (see page
11-370).
3. Disconnect the CMP sensor B 3P connector (A).
4. Remove CMP sensor B.
5. Install the parts in the reverse order of removal with a new O-ring (C). 1. Disconnect the CKP sensor 3P connector (A).
2. Remove the CKP sensor (B).
3. Install the parts in the reverse order of removal
with a new O-ring (C).
4. Do the CKP pattern clear/CKP pattern learn procedure with the HDS (see page 11-4).
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M/T model
11-22311-223
Output Shaft (Countershaft) Speed
Sensor Replacement Knock Sensor Replacement
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
A
B
C A
B
31N·m(3.2kgf·m,23lbf·ft)
NOTE: For A/T model (see page 14-227). 1. Disconnect the output shaft (countershaft) speed sensor 3P connector (A).
2. Remove the output shaft (countershaft) speed sensor (B).
3. Install the parts in the reverse order of removal with a new O-ring (C). 1. Disconnect the knock sensor 1P connector (A).
2. Remove the knock sensor (B).
3. Install the parts in the reverse order of removal.
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11-22411-224 PGM-FI System
MAP Sensor Replacement
MAF Sensor/IAT Sensor
Replacement
A B
C 3.4 N·m
(0.34 kgf·m, 2.4 lbf·ft)
A C
D B
1.5 N·m
(0.15 kgf·m, 1.1 lbf·ft)
1. Disconnect the MAP sensor 3P connector (A).
2. Remove the MAP sensor (B).
3. Install the parts in the reverse order of removal
with a new O-ring (C). 1. Disconnect the MAF sensor/IAT sensor 5P
connector (A).
2. Remove the screws (B).
3. Remove the MAF sensor/IAT sensor (C).
4. Install the parts in the reverse order of removal with a new O-ring (D).
* : This illustration shows K20Z2 engine
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11-22511-225
ECT Sensor 1 Replacement ECT Sensor 2 Replacement
A B
C
B
12 N·m (1.2 kgf·m, 8.7 lbf·ft) C
A
B
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)A
C
1. Drain the engine coolant (see page 10-8).
2. Remove the air cleaner (see page 11-345).
3. K20Z2 engine: Remove the EGR valve (see page 11-370).
4. Disconnect CMP sensor A 3P connector (A), and CMP sensor B 3P connector.
5. Remove the harness cover (C).
6. Disconnect the ECT sensor 1 2P connector (A).
7. Remove ECT sensor 1 (B).
8. Install the parts in the reverse order of removal with a new O-ring (C), then refill the radiator with
engine coolant (see page 10-8). 1. Drain the engine coolant (see page 10-8).
2. Remove the splash shield.
3. Disconnect the ECT sensor 2 2P connector (A), then
remove ECT sensor 2 (B).
4. Install the parts in the reverse order of removal with a new O-ring (C).
5. Install the splash shield.
6. Refill the radiator with engine coolant (see page 10-8).
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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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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, l eave 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 when ever 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, l eave the ignition
switch in ON (II) when you disconnect the HIM from
the data link connector (DLC). This will pr event 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.
(cont’d)
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