Acura TSX / Honda Accord CL. Instruction — page 288

YES: Go to step 6.

NO: The system is OK at this time.

6. Check the PGM-FI system.

Does the MIL indicator come on or is the ECM/PCM’s DTC indicated?

YES: Do the applicable troubleshooting for the ECM/PCM.

NO: Go to step 7.

7. Check the gear position.

Does the D4 indicator come on while neutral position (N) is selected or is the ECM/PCM’s
DTC indicated?

YES: Do the applicable troubleshooting for the ECM/PCM.

NO: Check for loose terminals at the ECM/PCM connectors, and go to step 8.

8. Clear the DTC using the HDS (see HOW TO CLEAR DTCS ).

9. Disconnect the HDS from the 16P DLC.

10. Turn the ignition switch OFF, then turn it ON again.

11. Test-drive the vehicle.

Is DTC 83 indicated and no ECM/PCM’s DTC?

YES: Replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL
UNIT REMOVAL & INSTALLATION
).

NO: The system is OK at this time.

DTC 84: VSA SENSOR NEUTRAL POSITION

1. Clear the DTC using the HDS (see HOW TO CLEAR DTCS ).

2. Disconnect the HDS from the 16P DLC.

3. Turn the ignition switch OFF, then turn it ON (II) again.

4. Test-drive the vehicle.

Does the VSA indicator come on, and is DTC 84 indicated?

YES: Go to step 5.

NO: The system is OK at this time.

5. Do the VSA sensor neutral position memorization (see VSA SENSOR NEUTRAL POSITION

MEMORIZATION ).

6. Clear the DTC using the HDS (see HOW TO CLEAR DTCS ).

7. Disconnect the HDS from the 16P DLC.

8. Turn the ignition switch OFF, then turn it ON (II) again.

9. Test-drive the vehicle.

Does the VSA indicator come on, and is DTC 84 indicated?

YES: Replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL
UNIT REMOVAL & INSTALLATION
).

NO: The system is OK at this time.

2004 Acura TSX

2004 BRAKES Vehicle Stability Assist System — TSX

DTC 86: F-CAN COMMUNICATION

1. Clear the DTC using the HDS (see HOW TO CLEAR DTCS ).

2. Start and run the engine for at least 5 seconds then turn the engine off.

3. Check for DTCs using the HDS.

Is DTC 86 indicated?

YES: Go to step 4.

NO: Intermittent failure, the F-CAN communication line is OK at this time.

4. Check for DTCs in the ECM/PCM.

Are any DTCs indicated?

YES: Troubleshoot the ECM/PCM DTCs.

NO: Replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL
UNIT REMOVAL & INSTALLATION
).

DTC 107: TCS OPERATION; DTC 108: VSA OPERATION

1. Clear the DTC using the HDS (see HOW TO CLEAR DTCS ).

2. Disconnect the HDS from the 16P DLC.

3. Turn the ignition switch OFF, then turn it ON (II) again.

4. Test-drive the vehicle.

Is DTC 107 or DTC 108 indicated?

YES: Check for loose terminals in the VSA control unit 47P connector. If necessary,
substitute a known-good VSA modulator-control unit (see VSA MODULATOR-
CONTROL UNIT REMOVAL & INSTALLATION
), and recheck.

NO: Intermittent failure; the system is OK at this time.

DTC 112: INTERNAL POWER SOURCE STUCK OFF

1. Check for other DTCs.

Is another DTC indicated?

YES: Do the appropriate troubleshooting for the DTC.

NO: Go to step 2.

2. Clear the DTC using the HDS (see HOW TO CLEAR DTCS ).

3. Disconnect the HDS from the 16P DLC.

4. Turn the ignition switch OFF, then turn it ON (II) again.

5. Test-drive the vehicle.

NOTE:

The ABS/VSA indicators do not come on by memorizing the DTC 107 or 108.

NOTE:

If the battery cable was disconnected three times with the ignition switch ON
(II), this DTC may be stored.

2004 Acura TSX

2004 BRAKES Vehicle Stability Assist System — TSX

Does the ABS indicator come on, and is DTC 112 indicated?

YES: Go to step 6.

NO: Intermittent failure; the vehicle is OK at this time.

6. Inspect G203 for a clean and tight connection.

Is G203 clean and properly connected?

YES: Go to step 7.

NO: Repair the connection at G203.

7. Disconnect the VSA control unit 47P connector.

8. Check for continuity between body ground and VSA control unit 47P connector terminals No. 32 and No.

47 individually.

Is there continuity?

YES: Check for loose terminals in the VSA control unit 47P connector. If necessary,
substitute a known-good VSA modulator-control unit (see VSA MODULATOR-
CONTROL UNIT REMOVAL & INSTALLATION
), and recheck.

NO: Repair open in the wire between the VSA modulator-control unit and G203.

2004 Acura TSX

2004 BRAKES Vehicle Stability Assist System — TSX

Fig. 64: Checking For Continuity Between Body Ground And VSA Control Unit 47P
Connector Terminals No. 32 & No. 47

DTC 121, 122, 123, 124: VSA SOLENOID

1. Clear the DTC using the HDS (see HOW TO CLEAR DTCS ).

2. Disconnect the HDS from the 16P DLC.

3. Turn the ignition switch OFF, then turn it ON (II) again.

4. Test-drive the vehicle.

Does the VSA indicator come on, and is DTC 121, 122, 123 or 124 indicated?

YES: Check for loose terminals in the VSA control unit 47P connector. If necessary,
substitute a known-good VSA modulator-control unit (see VSA MODULATOR-
CONTROL UNIT REMOVAL & INSTALLATION
), and recheck.

NO: Intermittent failure; the system is OK at this time.

2004 Acura TSX

2004 BRAKES Vehicle Stability Assist System — TSX

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