ACURA CSX 2006 Service Repair Manual

Power Supply Voltage Monitoring Function
Entry Lights Control System
Lighting System (Headlights, Parking Lights, Fog Lights, Side Marker Lights, License Plate
Lights, and Taillights)
Daytime Running Lights
Turn Signal/Hazard Warning Lights
Door Lock Response Operation
Power Window Key-off Operation
InputOutput
Input Output
Input Output
Input Output
Input Output
Input Output
Input Output
22-85
The MICU monitors the power supply voltage (back-up voltage). If the voltage goes below 10 V, the MICU sends a MICU message and will not
store DTCs.
MICU Battery voltage MICU : MICU internal circuit
The MICU controls the ceiling light ON/OFF and dimming based upon input signals from each switch. MICU IG1 power supply Ignition key switch
Driver’s door switch
Front passenger’s door switch
Left rear door switch
Right rear door switch
Driver’s door lock knob switch (LOCK) Interior light
B-CAN Keyless LOCK signal
The MICU contains the relay circuits for the headlight high/low beams and taillights, and controls the lighting system ON/OFF based upon input
signals from the combination light switch. MICU Headlight OFF switch Headlight ON switch
Fog light switch
Dimmer switch
Combination light switch (parking lights, side marker lights,
license plate lights, and taillights)
Passing switch Headlights (low beam)
Headlights (high beam)
Parking lights
Fog lights
Side marker lights
License plate lights
Taillights
The MICU controls the exterior lights as a daytime running lights based upon input signals from each switch. MICU Headlight OFF switch Headlight ON switch
Dimmer switch
Combination light switch (parking lights, side marker lights,
license plate lights, and taillights)
Passing switch Headlights (low beam)
Headlights (high beam)
Parking lights
Slide marker lights
License plate lights
Taillights
B-CAN Transmission range switch (P position)
The MICU controls the turn signal/hazard warning lights based upon input signals from the turn signal and hazard warning switches. MICU IG1 power supply Turn signal switch (left/right)
Hazard warning switch Turn signal lights (left/right)
The MICU controls the door lock actuators based upon B-CAN signals. B-CAN Door lock signals Door lock actuator (LOCK/UNLOCK) Driver’s door lock actuator (UNLOCK)
Trunk lid release actuator
The MICU controls the power windows key-off operation based upon input signals from each switch. MICU IG1 power supply Ignition key switch
Driver’s door switch
Front passenger’s door switch Power window key-off timer
(cont’d)
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Power Door Locks (Vehicle Speed Sense)
Power Door Locks (Normally LOCK/UNLOCK Operation)
Keyless Entry System
Keyless PANIC
InputOutput
Input Output
Input Output
Input Output
22-86Multiplex Integrated Control System
System Description (cont’d)
The MICU controls the door lock actuators based upon B-CAN signals and input signals from each switch.
MICU IG1 power supply Driver’s door switch
Front passenger’s door switch
Left rear door switch
Right rear door switch
Trunk lid latch switch
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)
Transmission range switch (P position) Door lock (LOCK)
B-CAN Vehicle speed pulse Engine RPM
The MICU controls the door lock actuators based upon input signals from each switch. MICU IG1 power supply Ignition key 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 lock knob switch (LOCK)
Driver’s door lock switch (LOCK/UNLOCK)
Driver’s door key cylinder switch (UNLOCK)
Front passenger’s door lock switch (LOCK/UNLOCK) Door lock actuators (LOCK/UNLOCK)
The MICU controls the door lock actuators based upon B-CAN signals and input signals from each switch. MICU IG1 power supply Ignition key 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 lock knob switch (LOCK/UNLOCK)
Driver’s door lock switch (LOCK/UNLOCK)
Driver’s door key cylinder switch (UNLOCK)
Front passenger’s door lock switch (LOCK/UNLOCK)
Transmission range switch (P position) Door lock actuator (LOCK/UNLOCK)
Driver’s door lock actuator (UNLOCK)
Trunk lid release actuator
B-CAN Keyless LOCK signal
The MICU controls the keyless PANIC based upon B-CAN signals. B-CAN Keyless PANIC signal (action, headlight low, parking light and horn) Headlights (low beam)
Parking lights
Side marker lights
License plate lights
Taillights
Horn
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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)
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µ
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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 cannot update fast enough. Hold the switch that is being tested while monitoring the Data List.
This should give the HDS time to update the signal on the Data List.
Because the HDS software is updated to support the release for newer vehicles it is not uncommon to see system function tests that are not
supported.
Make sure that the most current software is loaded.
Gauges Cruise Control Main Switch OFF/ON Cruise Control Set Switch OFF/ON
Cruise Control Resume Switch OFF/ON
Washer Fluid Level Switch OFF/ON
VSA/TCS Off Switch OFF/ON
Gauge Select/Reset Switch OFF/ON
Parking Brake Switch OFF/ON
Brake Fluid Level Switch OFF/ON
Illumination Volume Plus Switch OFF/ON
Illumination Volume Minus Switch OFF/ON
Km/h mph Select Switch OFF/ON
Fuel Sending Unit Input 1 deg
Fuel Sending Unit Input 2 VOLTAGE
VSA/TCS Active Indicator OFF/ON
VSA/TCS Indicator (Warning) OFF/ON
ABS Indicator OFF/ON
Cruise Control Main Switch Indicator OFF/ON
MIL Indicator OFF/ON
Washer Fluid Level Indicator OFF/ON
DRL Indicator OFF/ON
Low Oil Pressure Indicator OFF/ON
Charging System Indicator OFF/ON
Cruise Main Switch ON Indicator OFF/ON
Maintenance Minder Indicator OFF/ON
High Beam Indicator OFF/ON
Parking Light ON Indicator OFF/ON
Low Fuel Warning Indicator OFF/ON
Security Indicator OFF/ON
Fog Light Indicator OFF/ON
Seat Belt Indicator OFF/ON
Speed Indicator (km/h) 0 249 km/h, over 250 km/h, Fail
Speed Indicator (mph) 0 154 mph, over 155 mph, Fail
Low Tire Pressure Indicator OFF/ON
TPMS Indicator OFF/ON
A/TGearPositionSwitch(R) OFF/ON
A/TGearPositionSwitch(P) OFF/ON
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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) OFF/ON
Headlight Switch (High Beam) OFF/ON
Headlight Switch (PASSING) OFF/ON
Turn Signal Switch (LEFT) OFF/ON
Turn Signal Switch (RIGHT) OFF/ON
Fog Light Switch OFF/ON
Ignition Key Cylinder Light Command OFF/ON
Interior Light Command OFF/ON
Left Turn Signal Command OFF/ON
Right Turn Signal Command OFF/ON
Headlight Command OFF/ON
Headlight High Beam Command OFF/ON
Parking Light Command OFF/ON
Fog Light Command OFF/ON
DRL Command OFF/ON
Door Locks Driver’s Door Switch OFF/ON
Front Passenger’s Door Switch OFF/ON
Driver’s Rear Door Switch OFF/ON
Passenger’s Rear Door Switch OFF/ON
Front Passenger’s Door Lock Sw. (LOCK) OFF/ON
Front Passenger’s Door Lock Sw. (UNLOCK) OFF/ON
Front Passenger’s Door Lock Knob Sw. (UNLOCK) OFF/ON
Driver’s Rear Door Lock Knob Switch (UNLOCK) OFF/ON
Passenger’s Rear Door Lock Knob Sw. (UNLOCK) OFF/ON
Driver’s Door Key Cylinder Switch (LOCK) OFF/ON
Driver’s Door Key Cylinder Switch (UNLOCK) OFF/ON
Driver’s Door Lock Switch (LOCK) OFF/ON
Driver’s Door Lock Switch (UNLOCK) OFF/ON
Driver’s Door Lock Knob Switch (LOCK) OFF/ON
Driver’s Door Lock Knob Switch (UNLOCK) OFF/ON
Door LOCK Command OFF/ON
Door UNLOCK Command OFF/ON
Driver’s Door UNLOCK Command OFF/ON
(cont’d)
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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’s Rear Door Switch OFF/ON
Passenger’s Rear Door Switch OFF/ON
Trunk Lid/Tailgate Switch OFF/ON
Front Passenger’s Door Lock Sw. (LOCK) OFF/ON
Front Passenger’s Door Lock Sw. (UNLOCK) OFF/ON
Front Passenger’s Door Lock Knob Sw. (UNLOCK) OFF/ON
Driver’s Rear Door Lock Knob Switch (UNLOCK) OFF/ON
Passenger’s Rear Door Lock Knob Sw. (UNLOCK) OFF/ON
Trunk Key Cylinder (UNLOCK) OFF/ON
Driver’s Door Key Cylinder Switch (LOCK) OFF/ON
Driver’s Door Key Cylinder Switch (UNLOCK) OFF/ON
Driver’s Door Lock Switch (LOCK) OFF/ON
Driver’s Door Lock Switch (UNLOCK) OFF/ON
Driver’s Door Lock Knob Switch (LOCK) OFF/ON
Driver’s Door Lock Knob Switch (UNLOCK) OFF/ON
Door LOCK Command OFF/ON
Door UNLOCK Command OFF/ON
Driver’s Door UNLOCK Command OFF/ON
Wipers Brake Pedal Position Switch OFF/ON
Windshield Wiper Switch (LOW) OFF/ON
Windshield Wiper Switch (HIGH) OFF/ON
Windshield Wiper Switch (MIST) OFF/ON
Windshield Wiper Switch (INT) OFF/ON
Windshield Washer Switch OFF/ON
Windshield Wiper Motor PARK Switch OFF/ON
Intermittent Wiper Dwell Timer 0.0 1.0 k /OPEN
Windshield Wiper Motor HI Command OFF/ON
Windshield Wiper Motor LO Command OFF/ON
Windshield Washer Motor Command OFF/ON
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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
Passenger’s Rear Door Switch OFF/ON
Trunk Lid/Tailgate Switch OFF/ON
Front Passenger’s Door Lock Sw. (LOCK) OFF/ON
Front Passenger’s Door Lock Sw. (UNLOCK) OFF/ON
Front Passenger’s Door Lock Knob Sw. (UNLOCK) OFF/ON
Driver’s Rear Door Lock Knob Switch (UNLOCK) OFF/ON
Passenger’s Rear Door Lock Knob Sw. (UNLOCK) OFF/ON
Trunk Key Cylinder (UNLOCK) OFF/ON
Radio Switch OFF/ON
Hazard Switch OFF/ON
Hood Switch OFF/ON
Driver’s Door Key Cylinder Switch (LOCK) OFF/ON
Driver’s Door Key Cylinder Switch (UNLOCK) OFF/ON
Driver’s Door Look Switch (LOCK) OFF/ON
Driver’s Door Look Switch (UNLOCK) OFF/ON
Driver’s Door Look Knob Switch (LOCK) OFF/ON
Driver’s Door Look Knob Switch (UNLOCK) OFF/ON
Door LOCK Command OFF/ON
Door UNLOCK Command OFF/ON
Driver’s Door UNLOCK Command OFF/ON
Security Hazard Signal Command OFF/ON
Headlight Command OFF/ON
Headlight High Beam Command OFF/ON
Parking Light Command OFF/ON
(cont’d)
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•••
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 signal 1 time (0.6 sec) to all doors
UNLOCK driver’s side door Outputs UNLOCK signal 1 time (0.6 sec) to driver’s
door
UNLOCK all doors Outputs UNLOCK signal 1 time (0.6 sec) to all doors
Lighting Interior Light Command Illuminates for 30 seconds.
LEFT Turn Signal Command Blinks for 5 seconds.
RIGHT Turn Signal Command Blinks for 5 seconds.
Hazard flasher Blinks turn signal (left and right) for 15 seconds.
Headlight Command Operates headlight (low) for 15 seconds.
Headlight HIGH Beam Command Operates headlight (high) for 15 seconds.
Fog Light Operates fog light relay for 15 seconds.
Parking Light Command Operates small lights for 15 seconds.
Keyless Trunk Lid/Tailgate Release Command Unlock trunk
Security Horn Command Operates horn for 1 second.
Wipers Windshield Wiper Motor LOW Command Operates windshield wiper motor for 5 seconds (low
speed).
Windshield Wiper Motor HIGH Command Operates windshield wiper motor for 5 seconds (high
speed).
Windshield Washer Command Operates windshield washer motor for 5 seconds.
Gauges Self Diagnostic Test
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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?
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(#')
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 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 ?
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