Acura CSX. Manual — part 343
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SNR9A00K722000R3503FAAT00
SNR9A00K722000R5101FAAT00
−
−
−
−
−
−
−
−
DTC 35-03:
DTC 35-05:
DTC 51-01:
YES
NO
YES
NO
YES
NO
YES
NO
17-46
17-46
EPS Components
EPS Control Unit Internal Circuit
(EPS CPU) (Internal Diagnosis)
EPS Control Unit Internal Circuit
(EPS Motor/EPS CPU) (Internal Diagnosis)
Low/High Voltage for the Torque
Sensor (VT1 and VT2) (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. 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. Start the engine.
6. Wait 10 seconds or more.
7. 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.
1. Turn the ignition switch to LOCK (0).
2. Connect the HDS to the data link connector (DLC).
3. Turn the ignition switch to ON (II).
4. Check the ADVT1 in the DATA LIST with the HDS.
Go to step 5.
Go to step 6.
5. Check the ADVT2 in the DATA LIST with the HDS.
Check for loose terminals or poor
connections. If the connections are good, the
system is OK at this time.
Go to step 6.
6. Turn the ignition switch to LOCK (0).
Does the EPS indicator come on?
Is DT C 35-03 or 35-05 indicated?
Is the voltage at 0.90
3.55 V ?
Is the voltage at 1.02
3.7 3 V ?
08/08/21 14:54:34 61SNR030_170_0047
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01
02
−
−
−
−
YES
NO
YES
NO
17-47
EPS CONTROL UNIT CONNECTOR D (28P)
PVF (BRN)
VS1 (GRN)
EPS CONTROL UNIT CONNECTOR D (28P)
PVF (BRN)
VS2 (LT GRN)
7. Disconnect EPS control unit connector D (28P).
8. Measure the resistance between EPS control unit
connector D (28P) terminals No. 9 and No. 10.
Go to step 9.
Go to step 13.
9. Measure the resistance between EPS control unit
connector D (28P) terminals No. 8 and No. 9.
Go to step 10.
Go to step 15.
Wire side of female terminals
Wire side of female terminals
Is the r esistance between 12
15
?
Is the r esistance between 12
15
?
08/08/21 14:54:34 61SNR030_170_0048
03
01
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−
−
−
YES
NO
YES
NO
17-48
EPS Components
EPS CONTROL UNIT CONNECTOR D (28P)
PVF (BRN)
EPS CONTROL UNIT CONNECTOR D (28P)
PVF (BRN)
10. Check for continuity between EPS control unit
connector D (28P) terminal No. 9 and body ground.
Go to step 11.
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).
11. Disconnect the torque sensor 3P connector from
the steering gearbox.
12. Check for continuity between EPS control unit
connector D (28P) terminal No. 9 and body ground.
Repair short to body ground in the wire
between the torque sensor and the EPS control
unit.
Faulty torque sensor (short in the sensor
internal circuit), replace the steering gearbox
(see page 17-65).
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is ther e continuity?
08/08/21 14:54:34 61SNR030_170_0049
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05
06
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−
−
−
YES
NO
YES
NO
17-49
TORQUE SENSOR 3P CONNECTOR
VS1
PVF
TORQUE SENSOR 3P CONNECTOR
VS2
PVF
13. Disconnect the torque sensor 3P connector from
the steering gearbox.
14. On the sensor side, measure the resistance
between torque sensor 3P connector terminals
No. 1 and No. 2.
Repair open or short between the PNK and
BLU/RED wires in the torque sensor circuit between
the torque sensor and the EPS control unit.
Faulty torque sensor (short or open in the
internal circuit), replace the steering gearbox
(see page 17-65).
15. Disconnect the torque sensor 3P connector from
the steering gearbox.
16. On the sensor side, measure the resistance
between torque sensor 3P connector terminals
No. 2 and No. 3.
Repair open or short between the WHT/GRN
and BLU/RED wires in the torque sensor circuit
between the torque sensor and the EPS control
unit.
Faulty torque sensor (short or open in the
internal circuit), replace the steering gearbox
(see page 17-65).
Terminal side of male terminals
Terminal side of male terminals
Is the r esistance between 12
15
?
Is the r esistance between 12
15
?
08/08/21 14:54:35 61SNR030_170_0050
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