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Acura CSX. Manual - part 342

０１

０２

０３

０４

−

YES

17-42

EPS Components

EPS CONTROL UNIT CONNECTOR B (2P)

H-W (GRN)

EPS CONTROL UNIT CONNECTOR C (2P)

H-U (RED)

H-V (BLU)

EPS CONTROL UNIT CONNECTOR B (2P)

H-W (GRN)

EPS CONTROL UNIT CONNECTOR C (2P)

H-U (RED)

H-V (BLU)

8. Check for continuity between body ground and EPS

control unit connector B (2P) terminal No. 1,
connector C (2P) terminal No. 1, and connector C
(2P) terminal No. 2 individually.

Go to step 9.

Check for loose terminals in the EPS control

unit connectors, and repair if necessary. If no poor
connections are found, replace the EPS control unit
(see page 17-84).

9. Disconnect the EPS motor 1P connector and EPS

motor 2P connector.

10. Check for continuity between body ground and EPS

control unit connector B (2P) terminal No. 1,
connector C (2P) terminal No. 1, and connector C
(2P) terminal No. 2 individually.

Repair short to body ground in the wire

between the EPS control unit and EPS motor.

Short to body ground in the EPS motor wire;

or a short in the EPS motor internal circuit, replace
the EPS motor (see page 17-63).

Wire side of female terminals

Is ther e continuity?

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０５

０６

ＳＮＲ９Ａ００Ｋ７２２０００Ｒ３３０２ＦＡＡＴ００

−

DTC 33-02:

DTC 33-07:

YES

17-43

EPS CONTROL UNIT CONNECTOR B (2P)

H-W (GRN)

EPS CONTROL UNIT CONNECTOR C (2P)

H-U (RED)

H-V (BLU)

Upper FET Stuck ON (Initial

Diagnosis)

Upper FET Stuck ON (Regular

Diagnosis)

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0).

4. Start the engine.

Go to step 5.

Check for loose terminals or poor connections.

If the connections are good, the system is OK at
this time.

5. Check for DTCs with the HDS.

Go to step 6.

Troubleshoot the indicated DTC. If there are

no DTCs, the system is OK at this time.

6. Turn the ignition switch to LOCK (0).

7. Disconnect EPS control unit connector B (2P) and

connector C (2P).

8. Turn the ignition switch to ON (II).

9. Measure the voltage between body ground and

EPS control unit connector B (2P) terminal No. 1,
connector C (2P) terminal No. 1, and connector C
(2P) terminal No. 2 individually.

Go to step 10.

Check for loose terminals in the EPS control

unit connectors and the EPS motor connectors, and
repair if necessary. If no poor connections are
found, replace the EPS control unit (see page 17-84).

10. Turn the ignition switch to LOCK (0).

Wire side of female terminals

Does the EPS indicator come on?

Is DT C 33-02 or 33-07 indicated?

Is ther e batter y voltage?

08/08/21 14:54:33 61SNR030_170_0044

０３

０４

ＳＮＲ９Ａ００Ｋ７２２０００Ｒ３４０１ＦＡＡＴ０１

−

YES

DTC 34-01:

17-44

EPS Components

EPS CONTROL UNIT CONNECTOR B (2P)

H-W (GRN)

EPS CONTROL UNIT CONNECTOR C (2P)

H-U (RED)

H-V (BLU)

11. Disconnect the EPS motor 1P connector and EPS

motor 2P connector.

12. Turn the ignition switch to ON (II).

13. Measure the voltage between body ground and

EPS control unit connector B (2P) terminal No. 1,
connector C (2P) terminal No. 1, and connector C
(2P) terminal No. 2 individually.

Repair short to power in the wire between

the EPS control unit and the EPS motor.

Short to power in the EPS motor wire; or a

short in the EPS motor internal circuit, replace the
EPS motor (see page 17-63).

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0).

4. Turn the ignition switch to ON (II).

Go to step 5.

Check for loose terminals or poor connections.

If the connections are good, the system is OK at
this time.

5. Check for DTCs with the HDS.

Check for loose terminals in the EPS control

unit connectors, and repair if necessary. If no poor
connections are found, replace the EPS control unit
(see page 17-84).

Troubleshoot the indicated DTC. If there are

no DTCs, the system is OK at this time.

Power Relay Stuck ON (Ignition

Switch is in LOCK (0))

Wire side of female terminals

Is ther e batter y voltage?

Does the EPS indicator come on?

Is DT C 34-01 indicated?

08/08/21 14:54:33 61SNR030_170_0045

０１

０２

ＳＮＲ９Ａ００Ｋ７２２０００Ｒ３４０２ＦＡＡＴ０２

−

DTC 34-02:

YES

17-45

EPS CONTROL UNIT CONNECTOR B (2P)

H-W (GRN)

EPS CONTROL UNIT CONNECTOR C (2P)

H-U (RED)

H-V (BLU)

Fail-safe Relay Stuck ON (Initial

Diagnosis)

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0).

4. Turn the ignition switch to ON (II).

Go to step 5.

Check for loose terminals or poor connections.

If the connections are good, the system is OK at
this time.

5. Check for DTCs with the HDS.

Go to step 6.

Troubleshoot the indicated DTC. If there are

no DTCs, the system is OK at this time.

6. Turn the ignition switch to LOCK (0).

7. Disconnect EPS control unit connector B (2P) and

connector C (2P).

8. Turn the ignition switch to ON (II).

9. Measure the voltage between body ground and

EPS control unit connector B (2P) terminal No. 1,
connector C (2P) terminal No. 1, and connector C
(2P) terminal No. 2 individually.

Repair short to power in the wire between

the EPS control unit and the EPS motor.

Replace the EPS control unit (see page 17-84).

Wire side of female terminals

Does the EPS indicator come on?

Is DT C 34-02 indicated?

Is ther e batter y voltage?

08/08/21 14:54:34 61SNR030_170_0046

Content .. 340 341 342 343 ..