Acura CSX. Manual — part 395
SNR9AC6K701000R81XXFAAT00
SNR9AC6K701000R8111FAAT00
−
−
−
−
DTC 81-xx :
DTC 81-11:
DTC 81-51:
DTC 81-52:
YES
NO
YES
NO
19-84
19-84
ABS Components
Central Processing Unit (CPU)
Internal Circuit Malfunction
Central Processing Unit (CPU)
Internal Circuit Malfunction
Central Processing Unit (CPU)
Internal Circuit Malfunction
Central Processing Unit (CPU)
Internal Circuit Malfunction
: Any two-character subcode (Except these
combinations: DTC 81-11, 81-51, and 81-52)
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it to
ON (II) again.
4. Check for DTCs with the HDS.
If DTC 81-11, 81-51, or 81-52 is indicated at
the same time, do the appropriate troubleshooting
first. If DTC 81-11, 81-51, or 81-52 is not indicated,
replace the ABS modulator-control unit (see page
19-90), and retest.
Intermittent failure, the system is OK at this
time.
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Test-drive the vehicle.
NOTE: Drive the vehicle on the road, not on a lift.
4. Check for DTCs with the HDS.
Replace the ABS modulator-control unit
(see page 19-90).
Intermittent failure, the system is OK at this
time.
Is DT C 81-xx indicated?
Is DT C 81-11, 81-51, or 81-52 indicated?
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01
SNR9AC6K701000R8601FAAT00
−
−
−
−
DTC 86-01:
YES
NO
Sign
ECM/PCM
Connector A
(44P) Terminal
YES
NO
ABS Modulator-
control Unit 25P
Connector Terminal
19-85
CAN-H (WHT)
CAN-L (RED)
ECM/PCM CONNECTOR A (44P)
CAN-L (RED)
CAN-H (WHT)
ABS MODULATOR-CONTROL UNIT 25P CONNECTOR
F-CAN Bus-off Malfunction
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it to
ON (II) again.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the system is OK at this
time. Check for loose terminals between ECM/PCM
connector A (44P) and the ABS modulator-control
unit 25P connector. Refer to intermittent failures
troubleshooting (see page 19-50).
5. Turn the ignition switch to LOCK (0).
6. Short the SCS line with the HDS.
7. Disconnect ECM/PCM connector A (44P).
8. Disconnect the ABS modulator-control unit 25P
connector (see step 2 on page 19-90).
9. Check for continuity between ABS modulator-
control unit 25P connector terminal and ECM/PCM
connector A (44P) terminal (see table).
CAN-L
No. 17
No. 37
CAN-H
No. 1
No. 36
Check for loose terminals in the ABS
modulator-control unit 25P connector. If necessary,
substitute a known-good ABS modulator-control
unit (see page 19-90), and retest.
Repair open in the wire between the ECM/
PCM and the ABS modulator-control unit.
Wire side of female terminals
Terminal side of female terminals
Is DT C 86-01 indicated?
Is ther e continuity?
08/08/21 15:03:16 61SNR030_190_0085
01
SNR9AC6K701000R8624FAAT00
−
−
−
−
DTC 86-24:
DTC 86-25:
YES
NO
Sign
ECM/PCM
Connector A
(44P) Terminal
YES
NO
ABS Modulator-
control Unit 25P
Connector Terminal
19-86
ABS Components
CAN-H (WHT)
CAN-L (RED)
ECM/PCM CONNECTOR A (44P)
CAN-L (RED)
CAN-H (WHT)
ABS MODULATOR-CONTROL UNIT 25P CONNECTOR
F-CAN Communication with
Engine Malfunction
F-CAN Communication with
Engine Malfunction
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Test-drive the vehicle at 10 km/h (7 mph) or more.
NOTE: Drive the vehicle on the road, not on a lift.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the system is OK at this
time. Check for loose terminals between ECM/PCM
connector A (44P) and the ABS modulator-control
unit 25P connector. Refer to intermittent failures
troubleshooting (see page 19-50).
5. Turn the ignition switch to LOCK (0).
6. Short the SCS line with the HDS.
7. Disconnect ECM/PCM connector A (44P).
8. Disconnect the ABS modulator-control unit 25P
connector (see step 2 on page 19-90).
9. Check for continuity between ABS modulator-
control unit 25P connector terminal and ECM/PCM
connector A (44P) terminal (see table).
CAN-L
No. 17
No. 37
CAN-H
No. 1
No. 36
Go to step 10.
Repair open in the wire between the ECM/
PCM and the ABS modulator-control unit.
Wire side of female terminals
Terminal side of female terminals
Is DT C 86-24 and/ or 86-25 indicated?
Is ther e continuity?
08/08/21 15:03:17 61SNR030_190_0086
SNR9AC6K701000R86FFFAAT00
−
−
−
−
YES
NO
YES
NO
DTC 86-FF:
19-87
19-87
10. Reconnect all connectors.
11. Update the ECM/PCM if it does not have the latest
software (see page 11-227), or substitute a known-
good ECM/PCM (see page 11-7).
12. Clear the DTC with the HDS.
13. Test-drive the vehicle at 10 km/h (7 mph) or more.
NOTE: Drive the vehicle on the road, not on a lift.
14. Check for DTCs with the HDS.
Replace the ABS modulator-control unit
(see page 19-90).
If the ECM/PCM was updated, troubleshooting
is complete. If the ECM/PCM was substituted,
replace the original ECM/PCM (see page 11-228).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it to
ON (II) again.
4. Check for DTCs with the HDS.
Replace the ABS modulator-control unit
(see page 19-90).
Intermittent failure, the system is OK at this
time.
F-CAN Communication with ABS
Malfunction
Is DT C 86-24 and/ or 86-25 indicated?
Is DT C 86-F F indicated?
08/08/21 15:03:17 61SNR030_190_0087
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