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Acura RSX Honda Integra. Manual - part 142

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11-274

PGM-FI System

DLC Circuit Troubleshooting (cont’d)

DATA LINK CONNECTOR (DLC)

K-LINE
(LT BLU)

ECM/PCM CONNECTOR E (31P)

DATA LINK CONNECTOR (DLC)

K-LINE (LT BLU)

K-LINE
(LT BLU)

DATA LINK CONNECTOR (DLC)

K-LINE
(LT BLU)

LG3
(BRN/YEL)

7. Disconnect ECM/PCM connector E (31P). Make sure

a scan tool or the HDS is disconnected from the
DLC.

8. Check for continuity between DLC terminal No. 7

and body ground.

Repair short to ground in the wire between

DLC terminal No. 7 and the ECM/PCM (E23). After
repairing the wire, check for a DTC with a scan tool
or the HDS, and go to the indicated DTC’s
troubleshooting.

Go to step 9.

9. Check for continuity between DLC terminal No. 7

and ECM/PCM terminal E23.

Update the ECM/PCM if it does not have the

latest software, or substitute a known-good ECM/
PCM (see page 11-6), then recheck. If the symptom/
indication goes away with a known-good ECM/PCM,
replace the original ECM/PCM (see page 11-284).

Repair open in the wire between DLC terminal

No. 7 and the ECM/PCM (E23). After repairing the
wire, check for a DTC with a scan tool or the HDS,
and go to the indicated DTC’s troubleshooting.

10. Turn the ignition switch OFF.

11. Disconnect ECM/PCM connector E (31P). Make sure

a scan tool or the HDS is disconnected from the
DLC.

12. Turn the ignition switch ON (II).

13. Measure voltage between DLC terminals No. 5 and

No. 7.

Update the ECM/PCM if it does not have the

latest software, or substitute a known-good ECM/
PCM (see page 11-6), then recheck. If the symptom/
indication goes away with a known-good ECM/PCM,
replace the original ECM/PCM (see page 11-284).

Repair short to power in the wire between the

DLC terminal No. 7 and the ECM/PCM (E23). After
repairing the wire, check for a DTC with a scan tool
or the HDS, and go to the indicated DTC’s
troubleshooting.

Terminal side of female terminals

Wire side of
female terminals

Terminal side of female terminals

Is ther e continuity?

Is ther e 0 V ?

05/06/27 17:39:28 61S6M040_110_0274

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2005-2006 models

YES

11-275

DATA LINK CONNECTOR (DLC)

(WHT/RED)

GND (BLK)

B (WHT/RED)

DATA LINK CONNECTOR (DLC)

LG3 (BRN/YEL)

B (WHT/RED)

DATA LINK CONNECTOR (DLC)

K-LINE
(LT BLU)

LG3
(BRN/YEL)

DATA LINK CONNECTOR (DLC)

NOTE:

• If the ECM/PCM does not communicate with the HDS,

do this troubleshooting procedure.

• Check that the MIL circuit is normal, then do this

troubleshooting.

1. Measure voltage between DLC terminal No. 16 and

body ground.

Go to step 2.

Repair open in the wire between DLC terminal

No. 16 and the No. 9 BACK UP (7.5 A) fuse in the
under-hood fuse/relay box.

2. Measure voltage between DLC terminals No. 4 and

No. 16.

Go to step 3.

Repair open in the wire between DLC terminal

No. 4 and body ground (G401).

3. Measure voltage between DLC terminals No. 5 and

No. 16.

Go to step 4.

Repair open in the wire between the

ECM/PCM (E3) and DLC terminal No. 5.

4. Turn the ignition switch ON (II).

5. Measure voltage between DLC terminals No. 5 and

No. 7.

Go to step 11.

Go to step 6.

6. Turn the ignition switch OFF.

7. Jump the SCS line with the HDS.

(cont’d)

Terminal side of female terminals

Is ther e batter y voltage?

Is ther e 8.5 V or mor e?

05/06/27 17:39:28 61S6M040_110_0275

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YES

11-276

PGM-FI System

DLC Circuit Troubleshooting (cont’d)

K-LINE
(LT BLU)

DATA LINK CONNECTOR (DLC)

ECM/PCM CONNECTOR E (31P)

DATA LINK CONNECTOR (DLC)

K-LINE (LT BLU)

K-LINE
(LT BLU)

LG3
(BRN/YEL)

DATA LINK CONNECTOR (DLC)

8. Disconnect ECM/PCM connector E (31P).

9. Check for continuity between DLC terminal No. 7

and body ground.

Repair short to ground in the wire between

DLC terminal No. 7 and the ECM/PCM (E23). After
repairing the wire, check for a DTC with the HDS,
then go to the indicated DTC’s troubleshooting.

Go to step 10.

10. Check for continuity between DLC terminal No. 7

and ECM/PCM terminal E23.

Update the ECM/PCM if it does not have the

latest software, or substitute a known-good ECM/
PCM (see page 11-6), then recheck. If the symptom/
indication goes away with a known-good ECM/PCM,
replace the original ECM/PCM (see page 11-284).

Repair open in the wire between DLC terminal

No. 7 and the ECM/PCM (E23). After repairing the
wire, check for a DTC with the HDS, then go to the
indicated DTC’s troubleshooting.

11. Turn the ignition switch OFF.

12. Jump the SCS line with the HDS.

13. Disconnect ECM/PCM connector E (31P).

14. Turn the ignition switch ON (II).

15. Measure voltage between DLC terminals No. 5 and

No. 7.

Update the ECM/PCM if it does not have the

latest software, or substitute a known-good ECM/
PCM (see page 11-6), then recheck. If the symptom/
indication goes away with a known-good ECM/PCM,
replace the original ECM/PCM (see page 11-284).

Repair short to power in the wire between

DLC terminal No. 7 and the ECM/PCM (E23). After
repairing the wire, check for a DTC with the HDS,
then go to the indicated DTC’s troubleshooting.

Terminal side of female terminals

Wire side of
female terminals

Terminal side of female terminals

Is ther e continuity?

Is ther e 0 V ?

05/06/27 17:39:28 61S6M040_110_0276

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11-277

Injector Replacement

K20A2/K20Z1 engines

K20A3 engine

2002-2004 models

D
22 N·m
(2.2 kgf·m, 16 lbf·ft)

K20A3 engine

2005-2006 models

D
22 N·m
(2.2 kgf·m, 16 lbf·ft)

1. Relieve fuel pressure (see page 11-360).

2. Remove the engine cover.

3. Disconnect the connectors from the injectors (A), and remove the harness holder (B).

4. Disconnect the quick-connect fittings (C).

5. Remove the fuel rail mounting nuts (D) from the fuel rail (E).

6. Remove the injector clip (F) from the injector (G).

7. Remove the injector from the fuel rail.

(cont’d)

05/06/27 17:39:29 61S6M040_110_0277

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