2006 ACURA CSX Service Repair Manual

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Page 2033 of 2893

ACURA CSX 2006 Service Repair Manual Security Alarm System
Key-in Reminder
Key Interlock (A/T)
Answer Back Response Operation
Wiper/Washer
Collision Detection Signal (CDS)
InputOutput
Input Output
Input Output
Input Output
Input Output
I

Security Alarm System
Key-in Reminder
Key Interlock (A/T)
Answer Back Response Operation
Wiper/Washer
Collision Detection Signal (CDS)
InputOutput
Input Output
Input Output
Input Output
Input Output
Input Output
22-87
The MICU controls the lighting system and horn based upon B-CAN signals and input signals from the each switch.
MICU IG1 power supply Ignition key switch
Audio switch
Driver’s door switch
Front passenger’s door switch
Left rear door switch
Right rear door switch
Trunk lid latch switch
Driver’s door key cylinder switch (UNLOCK)
Driver’s door lock knob switch (UNLOCK)
Front passenger’s door lock knob switch (UNLOCK)
Left rear door lock knob switch (UNLOCK)
Right rear door lock knob switch (UNLOCK)
Hood switch Horn
Headlights
Parking lights
Side marker lights
License plate lights
Taillights
B-CAN Keyless LOCK signal Door lock signal
The MICU controls the door lock actuators based upon ignition key switch, the driver’s door switch, and driver’s door lock knob switch signals. MICU Ignition key switch Driver’s door switch
Driver’s door lock knob switch Door lock actuator (LOCK/UNLOCK)
Driver’s door lock actuator (UNLOCK)
The MICU controls the key interlock solenoid based upon IG1, transmission range switch, and park-pin switch signals. MICU Ignition switch ACC Transmission range switch (P position)
Park-pin switch Key interlock solenoid
The MICU controls the lighting system and horn based upon B-CAN signals. B-CAN Answer back signals (headlight low, horn, parking lights) Horn Headlights
Parking lights
Side marker lights
License plate lights
Taillights
The MICU controls the wiper motor and the washer motor based upon IG1 and wiper/washer switch signals. MICU IG1 power supply Wiperswitch(INTandLO)
Wiper switch (LO and HI)
Wiper switch (MIST)
Washer switch
Wiper intermittent speed Wiper motor
Washer motor
The MICU controls the door lock actuators based upon IG1 and B-CAN signals. MICU IG1 power supply Door lock (LOCK/UNLOCK)
B-CAN SRS signal (front, side and rear) Impact sensors
(cont’d)
08/08/21 14:24:09 61SNR030_220_0089
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Page 2034 of 2893

ACURA CSX 2006 Service Repair Manual µ
µ
HDS Inputs and Commands
Input:System Menu Data List Data List Indication
22-88Multiplex Integrated Control System
System Description (cont’d)
Certain inputs happen so quickly that the HDS ca

Page 2035 of 2893

ACURA CSX 2006 Service Repair Manual System MenuData List Data List Indication
22-89
LightingDriver’s Door Switch OFF/ON
Hazard Switch OFF/ON
Headlight Switch (OFF) OFF/ON
Headlight Switch (PARKING) OFF/ON
Headlight Switch (HEADLIGHT)

Page 2036 of 2893

ACURA CSX 2006 Service Repair Manual µ
System MenuData List Data List Indication
22-90Multiplex Integrated Control System
System Description (cont’d)
Keyless
Driver’s Door Switch OFF/ON
Front Passenger’s Door Switch OFF/ON
Driver

Page 2037 of 2893

ACURA CSX 2006 Service Repair Manual System MenuData List Data List Indication
22-91
SecurityIgnition Key Cylinder Switch OFF/ON
Driver’s Door Switch OFF/ON
Front Passenger’s Door Switch OFF/ON
Driver’s Rear Door Switch OFF/ON
Pass

Page 2038 of 2893

ACURA CSX 2006 Service Repair Manual •••
Function Test:
System Menu Data List Indication Data List and Operation Time
22-92Multiplex Integrated Control System
System Description (cont’d)
Door Locks
LOCK all doors Outputs LOCK

Page 2039 of 2893

ACURA CSX 2006 Service Repair Manual
(#)
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YES
NO
YES
NO
22-93
Troubleshooting - B-CAN System Diagnosis Test Mode A
A
Check the ECM/PCM for DTCs and troubleshoot ECM/
PCM

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YES
NO
YES
NO
22-93
Troubleshooting - B-CAN System Diagnosis Test Mode A
A
Check the ECM/PCM for DTCs and troubleshoot ECM/
PCM (see page 11-3) or F-CAN loss of communication
errors first, then do this diagnosis if the symptom is
relatedtotheB-CANsystem.
NOTE: If the HDS is not available, do the Test Mode 1 and Test Mode 2 (see page 22-97).
Always cycle the ignition switch within 3 seconds when prompted in the DTC troubleshooting
procedures.
1. Compare the symptom with this list of B-CAN related systems:
Gauge control module
Exterior lights
Turn signals
Entry light control
Interior lights
Door-open and trunk-open indicators
Horns (security and panic)
Chimes (key-in, seat belt, lights-on, and parking brake)
Power window/moonroof timer
Wiper/washer
Security
Keyless entry
Power door locks
Keyinterlock
Dash light brightness control
Go to step 2.
Go to the system troubleshooting for the
system with the symptom. 2. Connect the HDS to the data link connector (A),
then turn the ignition switch to ON (II).
3. From the BODY ELECTRICAL menu, select UNIT INFORMATION, and then select CONNECTED UNIT
listed to see if the following control units are
communicating with the HDS.
MICU
Gauge control module
Immobilizer-keyless control unit
Climate control unit
HandsFreeLink control unit
NOTE: If one or more of the units are not communicating with the HDS, DETECT will be
displayed.
If the unit is not communicating or the vehicle is not equipped, ‘‘Not Available’’ will be displayed.
Go to step 4.
If any of the control units are not
communicating, go to B-CAN System Diagnosis
Test Mode B (see page 22-94). If all units are not
communicating or only the MICU is communicating,
go to DTC B1000 troubleshooting (see page 22-102).
(cont’d)
Is the symptom related to the B-CAN system? Ar e al l cont r ol uni t s communi cat i ng w i t h t he H DS?
08/08/21 14:24:59 61SNR030_220_0095
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Page 2040 of 2893

ACURA CSX 2006 Service Repair Manual (#)
µ
µ
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YES
NO
YES
NOUnit not communicating
22-9422-94Multiplex Integrated Control System
Troubleshooting - B-CAN System
Diagnosis Test Mode

(#')
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µ
µ
µ
YES
NO
YES
NOUnit not communicating
22-9422-94Multiplex Integrated Control System
Troubleshooting - B-CAN System
Diagnosis Test Mode A (cont’d)
Troubleshooting - B-CAN System
Diagnosis Test Mode B
4. Select the system that has the problem from the
BODY ELECTRICAL menu, then select DTCs.
Go to step 5.
If the problem is related to one of the
following items, go to B-CAN System Diagnosis
Test Mode C (see page 22-95) if the system does
not stop or turn off. Go to Test Mode D (see page
22-96) if the system does not run or turn on.
Exterior lights
Turn signals
Entry light control
Interior lights
Horn (security and panic)
Wiper/washer
If the problem is related to one of the following
items, go to the troubleshooting for that individual
system. Gauge control module
Door-open and trunk-open indicators
Chimes (key-in, seat belt, lights-on, and parking brake)
Security
Keyless entry
Keyinterlock
Dash light brightness control
Audio system
Navigation (if equipped)
HandsFreeLink (if equipped)
5. Record all DTCs, and sort them by DTC type.
6. Troubleshoot the DTC(s) in this order: Battery voltage DTCs.
Internal error DTCs.
Loss of communication DTCs. Begintroubleshooting with the lowest number first
(Example: if DTC B1008 and B1011 are retrieved,
begin by troubleshooting B 1008).
Signal error DTCs. Do this diagnosis if any of the control units are not
communicating (Not Available is displayed in the HDS)
as found by the B-CAN System Diagnosis Test Mode A
(see page 22-93).
1. Using the HDS, select the system that has the symptom from the BODY ELECTRICAL menu.
2. Select DTCs, and then check for loss of communication DTCs.
Go to step 3.
Replace the MICU.
3. Do the input test for the unit not communicating with the HDS.
MICU (see page 22-109)
Gauge control module (see page 22- 271)
Immobilizer-keyless control unit (see page
22-330)
Climate control unit (see page 21-24)
HandsFreeLink control unit (see page 23-388)
Are any DTCs indicated?
Ar e any l oss of communi cat i on DT Cs i nd i cat ed ?
08/08/21 14:24:59 61SNR030_220_0096
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