relay ACURA CSX 2006 Service Repair Manual

DTCDetection Item ABS Indicator Brake System
Indicator Note
19-53
34 -01 ABS Left-front Outlet Solenoid Valve Malfunction
(Solenoid Initial Pulse) ON ON (see page 19-73)
-21 ABS Left-front Outlet Solenoid Valve Malfunction (Solenoid Pulse) ON ON (see page 19-73)
-22 ABS Left-front Outlet Solenoid Valve Malfunction (Solenoid Speculative) ON ON (see page 19-73)
-23 ABS Left-front Outlet Solenoid Valve Malfunction (Solenoid Stuck ON) ON ON (see page 19-73)
35 -01 ABS Right-rear Inlet Solenoid Valve Malfunction (Solenoid Initial Pulse) ON ON (see page 19-73)
-21 ABS Right-rear Inlet Solenoid Valve Malfunction (Solenoid Pulse) ON ON (see page 19-73)
-22 ABS Right-rear Inlet Solenoid Valve Malfunction (Solenoid Speculative) ON ON (see page 19-73)
-23 ABS Right-rear Inlet Solenoid Valve Malfunction (Solenoid Stuck ON) ON ON (see page 19-73)
36 -01 ABS Right-rear Outlet Solenoid Valve Malfunction (Solenoid Initial Pulse) ON ON (see page 19-73)
-21 ABS Right-rear Outlet Solenoid Valve Malfunction (Solenoid Pulse) ON ON (see page 19-73)
-22 ABS Right-rear Outlet Solenoid Valve Malfunction (Solenoid Speculative) ON ON (see page 19-73)
-23 ABS Right-rear Outlet Solenoid Valve Malfunction (Solenoid Stuck ON) ON ON (see page 19-73)
37 -01 ABS Left-rear Inlet Solenoid Valve Malfunction (Solenoid Initial Pulse) ON ON (see page 19-73)
-21 ABS Left-rear Inlet Solenoid Valve Malfunction (Solenoid Pulse) ON ON (see page 19-73)
-22 ABS Left-rear Inlet Solenoid Valve Malfunction (Solenoid Speculative) ON ON (see page 19-73)
-23 ABS Left-rear Inlet Solenoid Valve Malfunction (Solenoid Stuck ON) ON ON (see page 19-73)
38 -01 ABS Left-rear Outlet Solenoid Valve Malfunction (Solenoid Initial Pulse) ON ON (see page 19-73)
-21 ABS Left-rear Outlet Solenoid Valve Malfunction (Solenoid Pulse) ON ON (see page 19-73)
-22 ABS Left-rear Outlet Solenoid Valve Malfunction (Solenoid Speculative) ON ON (see page 19-73)
-23 ABS Left-rear Outlet Solenoid Valve Malfunction (Solenoid Stuck ON) ON ON (see page 19-73)
41 -21 Right-front Wheel Lock ON ON/OFF (see page 19-74)
42 -21 Left-front Wheel Lock ON ON/OFF (see page 19-74)
43 -21 Right-rear Wheel Lock ON ON/OFF (see page 19-74)
44 -21 Left-rear Wheel Lock ON ON/OFF (see page 19-74)
51 -11 Motor Lock ON OFF (see page 19-75) -12 Motor Drive Circuit Malfunction ON OFF (see page 19-76)
-13 Motor Drive Circuit Malfunction ON OFF (see page 19-75)
52 -12 Motor Stuck OFF ON OFF (see page 19-78)
53 -01 Motor Relay Stuck ON 1 ON OFF (see page 19-78) -12 Motor Relay Stuck ON 2 ON OFF (see page 19-78)
54 -03 Fail-safe Relay 1 Stuck ON ON ON (see page 19-79) -04 Fail-safe Relay 1 Stuck OFF (Initial) ON ON (see page 19-80)
-21 Fail-safe Relay 1 Stuck OFF (Main) ON ON (see page 19-80)
61 -01 ABS Modulator-control Unit Initial IG Low Voltage ON ON (see page 19-81) -21 ABS Modulator-control Unit Power Source Low Voltage 1 ON ON (see page 19-81)
-22 ABS Modulator-control Unit Power Source Low Voltage 2 ON OFF (see page 19-81)
-23 ABS Modulator-control Unit Power Source Low Voltage 3 ON ON (see page 19-81)
62 -21 ABS Modulator-control Unit IG High Voltage ON ON (see page 19-82)
: Brake system indicator turns ON when two or more wheels fail.
(cont’d)
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ABS Modulator-control Unit Inputs and Outputs for 25P Connector (Connector Disconnected)
TerminalnumberWire color Terminal sign Description Signal
19-56ABS Components
System Description
NOTE: Standard battery voltage is about 12 V.
1 WHT CAN-H F-CAN communication circuit
2 GRN FR B Detects right-front wheel speed sensor signal
3 RED FL-GND Detects left-front wheel speed sensor signal
5 PUR RL-GND Detects left-rear wheel speed sensor signal
6 LT GRN RR B Detects right-rear wheel speed sensor signal
8 WHT FSR B Power source for the fail-safe relay Battery voltage at all times
9 RED MR B Power source for the motor relay Battery voltage at all times
Wire side of female terminals
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19-62ABS Components
Circuit Diagram
BATTERY
UNDER-HOOD FUSE/RELAY BOX
1
19
2827
G502
BLK
WHT
RED
WHT
WHT
RED
ABS
INDICATOR
BRAKE SYSTEM
INDICATOR
GAUGE CONTROL
MODULE (TACH)
LT GRNGRN
LT BLUWHT
RED
IGNITION SWITCH
IG1 HOT in ON (II) and START (III) WHT
LT GRN
WHT
RED BLU
WHT BRAKE PEDAL
POSITION SWITCH
Closed: Brake pedal pressed1
2
C1
C2 UNDER-DASH
FUSE/RELAY BOX
No. 4 (7.5 A)
No. 3 (30 A)
No.1(100A) No.2(50A)
No. 3 (30 A)
No. 12 (15 A) F16
B
G401
BRAKE FLUID
LEVEL SWITCH
Closed: Low fluid
1 2
BLK
ORN
H1
D8
3
6
ORN
1
PARKING
BRAKE SWITCH
Closed: Parking
brake applied DATA LINK
CONNECTOR (DLC)D2
YEL*
GRY*
ORN
6
16
4 7 14
IG11
2
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19-63
ABS MODULATOR-CONTROL UNIT
CONTROL UNIT MODULATOR UNIT
LEFT-FRONT
RIGHT-FRONT LEFT-REAR
RIGHT-REAR
PUMP MOTOR
G202 SOLENOIDS
8
9
12 3
2
18
14 5
6
15
25
24 1
17
10 16
WHT RED
WHT GRN
PNK
PUR YELBLK
BLK
LT GRN
IC
12
1
2
2
1
1 2 LT BLU
REDRED
ECM/PCM
WHT RED A40
A36
A37
WHT RED LT GRN
5V
REGULATOR
CAN
CONTROLLER IG1
ELECTRIC
CURRENT
LIMITATION
B
GND IG1
:12V :5V
RED
LT BLU GRY PUMP MOTOR RELAY
FAIL-SAFE RELAY
WHT BLU YEL*
GRY*
WHEEL SPEED SENSOR *1: ’06 model
*2: ’07 model
INOUT
IN OUT
IN OUT
INOUT
VCC
FSR B MR B
FL B
FL-GND FR B
FR-GND
RL B
RR B
MR-GND GND
CAN-H
CAN-L
K-LINE IG1
RL-GND RR-GND
1 2
(cont’d)
08/08/21 15:03:12 61SNR030_190_0063
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19-64ABS Components
Circuit Diagram (cont’d)
UNDER-HOOD FUSE/RELAY BOX
CONNECTOR C (2P)
BRAKE PEDAL POSITION
SWITCH 4P CONNECTORBRAKE FLUID LEVEL SWITCH
2P CONNECTOR
DATA LINK CONNECTOR (DLC)
ECM/PCM CONNECTOR A (44P)
ABS MODULATOR-CONTROL UNIT 25P CONNECTOR PARKING BRAKE SWITCH
1P CONNECTOR
WHEEL SPEED SENSOR
2P CONNECTOR
UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P)
GAUGE CONTROL MODULE (TACH) 36P CONNECTOR
Wire side of female terminals
Terminal side of female terminals
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DTC 51-12:
YES
NO
YES
NO YES
NO
19-76ABS Components
DTC Troubleshooting (cont’d)
ABS MODULATOR-CONTROL UNIT 25P CONNECTOR
MR B (RED)
Motor Drive Circuit 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 toON (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 at 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. Check the No. 3 (30 A) fuse in the under-hood fuse/ relay box.
Go to step 7.
Reinstall the checked fuse, then go to step 14.
7. Disconnect the ABS modulator-control unit 25P connector (see step 2 on page 19-90). 8. Check for continuity between ABS modulator-
control unit 25P connector terminal No. 9 and body
ground.
Repair short to body ground in the wire
between the No. 3 (30 A) fuse in the under-hood
fuse/relay box and the ABS modulator-control
unit.
Install a new No. 3 (30 A) fuse in the under-
hood fuse/relay box, then go to step 9.
Wire side of female terminals
I s DT C 5 1-12 i nd i cat ed ?
Isthefuseblown? Is there continuity?
08/08/21 15:03:15 61SNR030_190_0076
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YES
NO
YES
NO
19-77
ABS MODULATOR-CONTROL UNIT 25P CONNECTORMR B (RED)
9. Reconnect the ABS modulator-control unit 25Pconnector.
10. Turn the ignition switch to ON (II).
11. Clear the DTC with the HDS.
12. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.
13. Check for DTCs with the HDS.
Replace the ABS modulator-control unit
(see page 19-90).
Troubleshooting is complete. 14. Disconnect the ABS modulator-control unit 25P
connector (see step 2 on page 19-90).
15. Measure the voltage between ABS modulator- control unit 25P connector terminal No. 9 and body
ground.
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 No. 3
(30 A) fuse in the under-hood fuse/relay box and
the ABS modulator-control unit.
Wire side of female terminals
I s DT C 5 1-12 i nd i cat ed ?
Is there battery voltage?
08/08/21 15:03:15 61SNR030_190_0077
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DTC 52-12: DTC 53-01:
DTC 53-12:
YES
NO YES
NO
19-7819-78ABS Components
DTC Troubleshooting (cont’d)
Motor Stuck OFF
Motor Relay Stuck ON 1
Motor Relay Stuck ON 2
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. Operate any one of the four solenoids, as listed, in the ABS FUNCTION TEST five times with the HDS.
-LFT FT SOLENOID
-RT FT SOLENOID
-LFT REAR SOLENOID
-RT REAR SOLENOID
5. 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. 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 at 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. Disconnect the ABS modulator-control unit 25P connector (see step 2 on page 19-90).
Is DTC 52-12 indicated? I s DT C 5 3-01 or 5 3-12 i nd i cat ed ?
08/08/21 15:03:15 61SNR030_190_0078
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YES
NO YES
NO
DTC 54-03:
19-7919-79
MR-GND (BLK)
ABS MODULATOR-CONTROL UNIT 25P CONNECTOR
7. Check for continuity between ABS modulator-
control unit 25P connector terminal No. 25 and
body ground.
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 ABS
modulator-control unit and body ground (G 202).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.Fail-safe Relay 1 Stuck ON
Wire side of female terminals
Is there continuity? Is DTC 54-03 indicated?
08/08/21 15:03:15 61SNR030_190_0079
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DTC 54-04:
DTC 54-21:
YES
NO
YES
NO YES
NO
YES
NO
19-80ABS Components
DTC Troubleshooting (cont’d)
ABS MODULATOR-CONTROL UNIT 25P CONNECTOR
FSR B (WHT)
Fail-safe Relay 1 Stuck OFF
(Initial)
Fail-safe Relay 1 Stuck OFF (Main)
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 toON (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 at 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. Check the No. 3 (30 A) fuse in the under-hood fuse/relay box.
Go to step 7.
Reinstall the checked fuse, then go to step 14.
7. Disconnect the ABS modulator-control unit 25P connector (see step 2 on page 19-90). 8. Check for continuity between ABS modulator-
control unit 25P connector terminal No. 8 and body
ground.
Repair short to body ground in the wire
between the No. 3 (30 A) fuse in the under-hood
fuse/relay box and the ABS modulator-control
unit.
Install a new No. 3 (30 A) fuse in the under-
hood fuse/relay box, then go to step 9.
9. Reconnect the ABS modulator-control unit 25P connector.
10. Turn the ignition switch to ON (II).
11. Clear the DTC with the HDS.
12. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.
13. Check for DTCs with the HDS.
Replace the ABS modulator-control unit
(see page 19-90).
Troubleshooting is complete.
Wire side of female terminals
I s DT C 5 4-04 or 5 4-21 i nd i cat ed ?
Isthefuseblown? Is there continuity?
I s DT C 5 4-04 or 5 4-21 i nd i cat ed ?
08/08/21 15:03:16 61SNR030_190_0080
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