Acura CSX. Manual — part 342
01
02
03
04
−
−
−
−
YES
NO
YES
NO
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
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is ther e continuity?
08/08/21 14:54:33 61SNR030_170_0043
05
06
SNR9A00K722000R3302FAAT00
−
−
−
−
−
−
DTC 33-02:
DTC 33-07:
YES
NO
YES
NO
YES
NO
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
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
NO
YES
NO
YES
NO
DTC 34-01:
17-44
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
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
NO
YES
NO
YES
NO
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
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
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