Acura CSX. Manual — part 136
32
33
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YES
NO
YES
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11-218
PGM-FI System
ECM/PCM CONNECTOR A (44P)
VCC5 (GRY)
ECM/PCM CONNECTOR A (44P)
VCC6
(RED)
85. Check for continuity between ECM/PCM connector
terminal 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 ther e continuity?
Is ther e continuity?
Is ther e continuity?
Does continuity go away when one of the above
connector s is disconnected?
08/08/21 14:23:34 61SNR030_110_0218
01
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11-219
Injector Replacement
A
B
C
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.
* : This illustration shows K20Z2 engine
08/08/21 14:23:35 61SNR030_110_0219
02
11-220
PGM-FI System
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 (G101).
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
08/08/21 14:23:35 61SNR030_110_0220
*01
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*01
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Special Tools Required
Special Tools Required
11-221
11-221
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.
08/08/21 14:23:36 61SNR030_110_0221
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