Acura TSX / Honda Accord CL. Manual — part 628

troubleshooting.

NO: Go to step 10.

Fig. 136: Checking For Continuity Between DLC Terminal No. 7 & Body Ground

10. Check for continuity between DLC terminal No. 7 and ECM/PCM terminal E23.

Is there continuity?

YES: Update the ECM/PCM if it does not have the latest software, or substitute a known-
good ECM/PCM, then recheck (see HOW TO SUBSTITUTE THE ECM/PCM ). If the
symptom/indication goes away with a known-good ECM/PCM, replace the original
ECM/PCM.

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

NO: 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
troubleshooting.

Fig. 137: Checking For Continuity Between DLC Terminal No. 7 & ECM/PCM Terminal
E23

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.

Is there 0 V?

YES: Update the ECM/PCM if it does not have the latest software, or substitute a known-
good ECM/PCM, then recheck (see HOW TO SUBSTITUTE THE ECM/PCM ). If the
symptom/indication goes away with a known-good ECM/PCM, replace the original
ECM/PCM.

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

NO: 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
troubleshooting.

Fig. 138: Measuring Voltage Between DLC Terminals No. 5 & No. 7

REMOVAL & INSTALLATION

INJECTOR REPLACEMENT

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

1. Relieve fuel pressure (see FUEL PRESSURE RELIEVING ).

2. Remove the intake manifold cover (see CYLINDER HEAD COVER REMOVAL ).

3. Disconnect the connectors from the injectors (A) and the engine mount control solenoid valve (B).

4. Remove the ground cable bolt (G101) (C).

Fig. 139: Removing Injectors

5. Disconnect the quick-connect fittings (D).

6. Remove the fuel rail mounting nuts (E) from the fuel rail (F).

7. Remove the injector clip (G) from the injector.

8. Remove the injector from the fuel rail.

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX