Honda Civic. Manual — part 1089

7. Disconnect the VSA modulator-control unit 37P connector.
8. Check for continuity between VSA modulator-control unit 37P connector

terminal No. 14 and body ground.

Fig. 33: Checking Continuity Between VSA Modulator-Control Unit 37P
Connector Terminal No. 14 And Body Ground

Is there continuity?

YES -Repair short to body ground in the wire between the No. 3 MTR (30 A)
fuse in the under-hood fuse/relay box and the VSA modulator-control unit.

NO -Install the new No. 3 MTR (30 A) fuse in the under-hood fuse/relay box,
then go to step 10.

9. Disconnect the VSA modulator-control unit 37P connector.

10. Measure voltage between VSA modulator-control unit 37P connector terminal

No. 14 and body ground.

Fig. 34: Measuring Voltage Between VSA Modulator-Control Unit 37P

2008 Honda Civic GX

2006-08 BRAKES VSA System - Civic (All Except Hybrid)

Connector Terminal No. 14 And Body Ground

Is there battery voltage?

YES -Check for loose terminals in the VSA modulator-control unit 37P
connector. If necessary, substitute a known-good VSA modulator-control unit
(see VSA MODULATOR-CONTROL UNIT REMOVAL AND
INSTALLATION ), and retest.

NO -Repair open in the wire between the No. 3 MTR (30 A) fuse in the under-
hood fuse/relay box and the VSA modulator-control unit.

DTC 52-12: MOTOR STUCK OFF

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it ON (II) again.
4. Operate each SOLENOID or VSA in the VSA FUNCTION TEST five times

with the HDS.

5. Check for DTCs with the HDS.

Is DTC 52-12 indicated?

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

NO -Intermittent failure, the system is OK at this time.

DTC 53-01: MOTOR RELAY STUCK ON 1; DTC 53-12: MOTOR RELAY STUCK ON 2

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it ON (II) again.
4. Check for DTCs with the HDS.

Is DTC 53-01 or 53-12 indicated?

2008 Honda Civic GX

2006-08 BRAKES VSA System - Civic (All Except Hybrid)

YES -Go to step 5.

NO -Intermittent failure, the system is OK at this time. Check for loose
terminals at the VSA modulator-control unit 37P connector. Refer to
INTERMITTENT FAILURES TROUBLESHOOTING (see ).

5. Turn the ignition switch to LOCK (0).
6. Disconnect the VSA modulator-control unit 37P connector.
7. Check for continuity between VSA modulator-control unit 37P connector

terminal No. 37 and body ground.

Fig. 35: Checking For Continuity Between VSA Modulator-Control Unit
37P Connector Terminal No. 37 And Body Ground

Is there continuity?

YES -Check for loose terminals in the VSA modulator-control unit 37P
connector. If necessary, substitute a known-good VSA modulator-control unit
(see VSA MODULATOR-CONTROL UNIT REMOVAL AND
INSTALLATION ), and retest.

NO -Repair open in the wire between the VSA modulator-control unit and
body ground (G202).

DTC 54-03: FAIL-SAFE RELAY 1 STUCK ON; DTC 54-04: FAIL-SAFE RELAY 1 STUCK OFF
(INITIAL); DTC 54-21: FAIL-SAFE RELAY 1 STUCK OFF (MAIN)

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.

2008 Honda Civic GX

2006-08 BRAKES VSA System - Civic (All Except Hybrid)

3. Turn the ignition switch to LOCK (0), then turn it ON (II) again.
4. Check for DTCs with the HDS.

Is DTC 54-03, 54-04, or 54-21 indicated?

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

NO -Intermittent failure, the system is OK at this time.

DTC 56-01: INITIAL VIG FET STUCK OFF; DTC 56-02: INITIAL VIG FET STUCK ON; DTC 56-11:
VIG FET STUCK OFF

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it ON (II) again.
4. Check for DTCs with the HDS.

Is DTC 56-01, 56-02, or 56-11 indicated?

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

NO -Intermittent failure, the system is OK at this time.

DTC 61-01: VSA MODULATOR-CONTROL UNIT INITIAL IG LOW VOLTAGE; DTC 61-21: VSA
MODULATOR-CONTROL UNIT POWER SOURCE LOW VOLTAGE 1; DTC 61-22: VSA
MODULATOR-CONTROL UNIT POWER SOURCE LOW VOLTAGE 2; DTC 61-23: VSA
MODULATOR-CONTROL UNIT POWER SOURCE LOW VOLTAGE 3

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then start the engine.
4. Check for DTCs with the HDS.

Is DTC 61-01, 61-21, 61-22, or 61-23 indicated?

YES -Go to step 5.

2008 Honda Civic GX

2006-08 BRAKES VSA System - Civic (All Except Hybrid)