Acura TSX / Honda Accord CL. Manual — part 627

Fig. 132: Measuring Voltage Between DLC Terminal No. 16 & Body Ground

2. Measure voltage between DLC terminals No. 4 and No. 16.

Is there battery voltage?

YES: Go to step 3.

NO: Repair open in the wire between DLC terminal No. 4 and body ground (G451).

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

Fig. 133: Measuring Voltage Between DLC Terminals No. 4 & No. 16

3. Measure voltage between DLC terminals No. 5 and No. 16.

Is there battery voltage?

YES: Go to step 4.

NO: Repair open in the wire between the ECM/PCM (E3) and DLC terminal No. 5.

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

Fig. 134: Measuring Voltage Between DLC Terminals No. 5 & No. 16

4. Turn the ignition switch ON (II).

5. Measure voltage between DLC terminals No. 5 and No. 7.

Is there 8.5 V or more?

YES: Go to step 11 .

NO: Go to step 6.

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

Fig. 135: Measuring Voltage Between DLC Terminals No. 5 & No. 7

6. Turn the ignition switch OFF.

7. Jump the SCS line with the HDS.

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

9. Check for continuity between DLC terminal No. 7 and body ground.

Is there continuity?

YES: 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

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX