2006 ACURA CSX Service Repair Manual

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Page 1353 of 2893

ACURA CSX 2006 Service Repair Manual Î(#

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17-30EPS Components
Circuit Diagram
BATTERY
GAUGE CONTROL
MODULE (TACH) IGNITION
SWITCH
WHT
UNDER-HOOD
FUSE/RELAY BOX
BRN
BLU UNDER-DASH
FUSE/

Page 1354 of 2893

ACURA CSX 2006 Service Repair Manual Î
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17-31
EPS CONTROL UNIT
WHT
BLU
WHT
RED
BRN STEERING GEARBOX
PNK
PNK BLU
BRN GRN
YEL
BLU EPS MOTOR
ANGLE SENSOR
BRN
BLU BLK
BRN
RED
BLU RED GRN
WHT
BLK RED
BLK
GRN
BRN
LT GRN TORQUE
SENSOR

Page 1355 of 2893

ACURA CSX 2006 Service Repair Manual
17-32EPS Components
Circuit Diagram (cont’d)
EPS CONTROL UNIT
CONNECTOR A (2P)
EPS CONTROL UNIT
CONNECTOR B (2P)
DATA LINK CONNECTOR (DLC)
GAUGE CONTROL MODULE (TACH) 36P CONNECTOR
UNDER-DASH F

Page 1356 of 2893

ACURA CSX 2006 Service Repair Manual Î
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DTC 11-01:
DTC 11-02:
YES
NO YES
NO
17-33
DTC Troubleshooting
EPS CONTROL UNIT CONNECTOR D (28P)
IG1 (YEL)* (GRY)*
*1: ’06

Page 1357 of 2893

ACURA CSX 2006 Service Repair Manual µ
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DTC 12-01:
YES
NO
YES
NO
YES
NO YES
NO
YES
NO
17-34
EPS Components
DTC Troubleshootin

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DTC 12-01:
YES
NO
YES
NO
YES
NO YES
NO
YES
NO
17-34
EPS Components
DTC Troubleshooting (cont’d)
B(WHT)
EPS CONTROL UNIT CONNECTOR A (2P) EPS CONTROL UNIT CONNECTOR A (2P)
B(WHT)
Low/High VBU Voltage (Regular
Diagnosis)
1. Turn the ignition switch to ON (II).
2. Check the BATTERY in the EPS 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 3.
3. Turn the ignition switch to LOCK (0).
4. Check the No. 1 (70 A) fuse in the under-hood fuse/ relay box.
Reinstall the checked fuse, then go to step
13.
Go to step 5.
5. Disconnect the EPS control unit connector A (2P).
6. Check for continuity between EPS control unit connector A (2P) terminal No. 2 and body ground.
Repair short to body ground in the wire
between the EPS control unit and the No. 1 (70 A)
fuse in the under-hood fuse/relay box.
Install a new No. 1 (70 A) fuse in the under-
hood fuse/relay box, then go to step 7. 7. Reconnect the EPS control unit connector A (2P).
8. Turn the ignition switch to ON (II).
9. Clear the DTC with the HDS.
10. Turn the ignition switch to LOCK (0).
11. Start the engine.
12. Check for DTCs with the HDS.
Replace the EPS control unit (see page 17-84).
Troubleshooting is complete. If any other
DTCs are indicated, go to the indicated DTC’s
troubleshooting.
13. Disconnect EPS control unit connector A (2P) and connector D (28P).
14. Measure the voltage between EPS control unit connector A (2P) terminal No. 2 and body ground.
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).
Repair open in the wire between the EPS
control unit and the No. 1 (70 A) fuse in the under-
hood fuse/relay box.
Wire side of female terminals Wire side of female terminals
Is the voltage at 9.2 17.4 V ?
IsthefuseOK?
Is there continuity? Is DTC 12-01 indicated?
Is there battery voltage?
08/08/21 14:54:03 61SNR030_170_0035
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Page 1358 of 2893

ACURA CSX 2006 Service Repair Manual (#

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DTC 21-01:
DTC 21-02:
YES
NO YES
NO
YES
NO
17-35
Excessive Change of the Vehicle
Speed Signal (Regular Diagnosis)
Comparison

Page 1359 of 2893

ACURA CSX 2006 Service Repair Manual Î
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YES
NO
YES
NO
17-36EPS Components
DTC Troubleshooting (cont’d)
EPS CONTROL UNIT CONNECTOR D (28P)
ECM/PCM CONNECTOR A (44P)
CAN-H (WHT)
CAN-H (WHT) EPS CONTROL UNIT CO

Page 1360 of 2893

ACURA CSX 2006 Service Repair Manual
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DTC 22-01:
YES
NO YESNO
17-37
NEP (BLU)
EPS CONTROL UNIT CONNECTOR D (28P)
Engine Speed Signal (Initial
Diagnosis)
NOTE: If the M

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