ABS ACURA CSX 2006 Service Repair Manual

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22-7
Relay and Control Unit Locations
Engine Compartment
ABS MODULATOR-CONTROL UNIT
(’06-07 Touring and Premium models) or
VSA MODULATOR-CONTROL UNIT
(’07 TYPE S and ’08-09 models)
ECM/PCM
A/C CONDENSER FAN RELAY FAN CONTROL RELAY
BLOWER MOTOR RELAYPOWERMIRRORDEFOGGERRELAY
PGM-FI SUBRELAY
REAR WINDOW DEFOGGER RELAY
IGNITION COIL RELAY
A/C COMPRESSOR CLUTCH RELAY
UNDER-HOOD FUSE/RELAY BOX
PGM-FI MAIN RELAY 1
(FI MAIN) RADIATOR FAN RELAY
ELECTRONIC THROTTLE CONTROL
SYSTEM (ETCS) CONTROL RELAY
ELECTRICAL LOAD DETECTOR (ELD)
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 Under-hood Fuse/Relay Box
Fuse
Number Amps Component(s) or Circuit(s) Protected
22-60Power Distribution
Fuse to Components Index
1 100 A
(BAT)Battery, Power distribution
70 A
(EPS) EPS control unit
250A (IG)Ignition switch
80 A
60 A
(OPTION) No. 5, No. 6, No. 7, No. 27, No. 28, No. 29, and No. 31 fuses (in the under-dash fuse/relay box)
330A (ABS MTR) ABS modulator-control unit , VSA modulator-control unit
30 A
40 A
(ABS FSR) ABS modulator-control unit , VSA modulator-control unit
450A (H/L)No. 18, No. 19, No. 20, and No. 21 fuses (in the under-dash fuse/relay box)
40 A
(P/W) No. 24, No. 25, No. 26, No. 30, No. 32, and No. 33 fuses (in the under-dash fuse/relay box), Power window relay
(in the under-dash fuse/relay box)
5 Not used
6 20 A A/C condenser fan motor (via A/C condenser fan relay)
7 20 A Radiator fan motor (via radiator fan relay)
8 30 A Noise condenser (via rear window defogger relay), Rear window defogger (via rear window defogger relay)
9 40 A Blower motor (via blower motor relay)
10 10 A MICU (turn signal/hazard warning lights circuit)
11 15 A A/F sensor (Sensor 1) (via PGM-FI subrelay), EVAP canister vent shut valve (via PGM-FI subrelay), PGM-FI subrelay, No. 15 fuse (in the under-hood fuse/relay box) (via PGM-FI subrelay)
12 15 A Brake lights, ECM/PCM, Horn, MICU
13 Not used
14 Not used
15 7.5 A A/C condenser fan relay
16 Not used
17 15 A Stereo amplifier
18 15 A Ignition coil relay, Ignition coils (via Ignition coil relay)
19 15 A CKP sensor (via PGM-FI main relay 1), CMP sensor B (via PGM-FI main relay 1), ECM/PCM, ETCS control relay, Injectors (via PGM-FI main relay 1), PGM-FI main relay 1 (FI MAIN), PGM-FI main relay 2 (FUEL PUMP)
20 7.5 A A/C compressor clutch (via A/C compressor clutch relay)
21 15 A ECM/PCM (via ETCS control relay)
22 7.5 A Ceiling light, Courtesy lights, Front individual map lights, Ignition key light, Trunk light, Vanity mirror lights
23 10 A Audio unit , Data link connector (DLC), Gauge control module (speedo), Gauge control module (tach), HandsFreeLink control unit , Immobilizer-keyless control unit, MICU, Moonroof switch, Navigation unit
1: ’06-07 models
2: ’08-09 models
3: ’06-07 Touring and Premium models
4: ’07 TYPE S and ’08-09 models
5: ’08-09 models
6: TYPE S model
7: Without navigation system
8: With navigation system
9: ’09 model with navigation system
1
2
34
3
4 34
6 5
7 9 8
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Under-dash Fuse/Relay Box
Fuse
Number Amps
Component(s) or Circuit(s) Protected
22-62Power Distribution
Fuse to Components Index (cont’d)
1 7.5 A Power mirror switch light
2 15 A ECM/PCM, Fuel pump (via PGM-FI main relay 2), Immobilizer-keyless control unit
3 10 A Alternator, CMP sensor A, ECM/PCM (via brake pedal position switch), ELD, EVAP canister purge valve, MAF
sensor/IAT sensor, Reverse lockout solenoid , Secondary HO2S (sensor 2)
4 7.5 A ABS modulator-control unit , EPS control unit, VSA modulator-control unit , Yaw rate-lateral acceleration sensor
5 15 A Seat heaters (via seat heater relays)
6 20 A Fog light relay, Fog lights (via fog light relay)
7 Not used
8 Not used
9 7.5 A ODS unit, Passenger’s airbag cutoff indicator, SRS unit
10 7.5 A Back-up light (M/T), Gauge control module (speedo), Gauge control module (tach), MICU, Shift lock solenoid (A/T), TPMS control unit
11 10 A SRS unit
12 10 A Right headlight (high beam)
13 10 A Left headlight (high beam)
14 7.5 A Audio unit light , Climate control unit light, Dash lights brightness controller and odometer select/reset switch light, Driver’s footwell light , Driver’s seat heater switch light, Glove box light, Hazard warning switch light,
Moonroof switch light, Navigation unit , Park pin switch light (A/T), Passenger’s airbag cutoff indicator light,
Passenger’s footwell light , Passenger’s seat heater switch light, Steering wheel switches light (via cable reel),
VSA OFF switch light
15 7.5 A Parking lights, Taillights, License plate lights, Side marker lights
16 10 A Right headlight (low beam) 15 A Right HID unit
17 10 A Left headlight (low beam) 15 A Left HID unit
18 20 A MICU ( B H/L HI)
19 15 A MICU ( B SMALL LT)
20 Not used
1: ’06-07 Touring and Premium models
2: ’07 TYPE S and ’08-09 models
3: ’08-09 models
4: TYPE S model
5: With HID
6: Without HID
7: TYPE S and ’08 Premium and ’09 models
8: Without navigation system
9: With navigation system
4
1 2
2
7
3
8 49
4
6
5
6
5
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GroundComponent or Circuit Grounded
22-64Ground Distribution
Ground to Components Index
G1 Battery
G2 Engine
G3 Transmission housing
G101 A/T clutch pressure control solenoid valves A, B, C (A/T), CKP sensor, CMP sensor A, CMP sensor B, Data link connector (DLC), ECM/PCM (LG1), ECM/PCM (LG2), ECM/PCM (PG1), ECM/PCM (PG2), ECM/PCM (PGMETCS), EGR valve (K20Z2 engine), Ignition
coils, Immobilizer-keyless control unit, Rocker arm oil control solenoid, Rocker arm oil pressure switch, Transmission range
switch (A/T), VTC oil control solenoid valve
Shielding between the ECM/PCM and Knock sensor (KS) has wire.
Shielding between the ECM/PCM and Secondary HO2S (Sensor 2) has wire.
G201 Right fog light , Right front parking light, Right front side marker light, Right front turn signal light, Right headlight (high/low beams), Right HID unit , Windshield washer motor, Windshield wiper motor
G202 ABS modulator-control unit , VSA modulator-control unit
G301 A/C condenser fan motor, Blower motor relay, ELD, Left fog light , Left front parking light, Left front side marker light, Left front turn signal light, Left headlight (high/low beams), Left HID unit , Radiator fan motor (via fan control relay)
G401 Brake fluid level switch, Clutch interlock switch (M/T), Clutch pedal position switch (M/T), Hood switch, MICU (PG), Power transistor, Washer fluid level switch (G401 connects to G601 via under-dash fuse/relay box)
G402 EPS control unit
G403 Torque sensor
G501 Dash lights brightness controller and odometer select/reset switch, Driver’s door key cylinder switch, Driver’s door lock knob switch, HandsFreeLink control unit , MICU (SG), VSA OFF switch
G502 Data link connector (DLC), Front accessory power socket, Glove box light, Right power mirror defogger, Right side turn signal light
G503 Accessory power socket relays (front and console), Driver’s door lock switch, Gauge control module (tach), Left power mirror defogger, Left side turn signal light, Moonroof control unit/motor, Power mirror switch light, Power mirror switch, Power
window master switch (main switch), Power window master switch, Vanity mirror lights (driver’s and front passenger’s)
G504 Cable reel (steering wheel switches ground), Climate control unit, Front passenger’s door lock knob switch, Front passenger’s door lock switch, Gauge control module (speedo), Gauge control module (tach), Ignition key switch, Navigation unit , TPMS
control unit
G505 Audio unit , Navigation unit
G506 Memory erase signal (MES) connector, SRS unit (2 wires)
G601 A/T gear position console panel light/Park-pin switch (A/T), Console accessory power socket , Fuel pump, MICU (PG), Seat heater relays (driver’s and front passenger’s), Seat heater switches (driver’s and front passenger’s), Seat heaters (driver’s and
front passenger’s), Stereo amplifier (G601 connects to G401 via under-dash fuse/relay box)
Shielding between the left side impact sensor (FIRST) and rear safing sensor has wire.
Shielding between the SRS unit and left side impact sensor (FIRST) has wire.
G602 Driver’s seat belt buckle switch, Front passenger’s seat belt buckle switch, Left rear door lock knob switch, MICU (SG), MICU service check connector, ODS unit, Right rear door lock knob switch, Yaw rate-lateral acceleration sensor
Shielding between the right side impact sensor (FIRST) and right side impact sensor (SECOND) have wires.
Shielding between the SRS unit and right side impact sensor (FIRST) has wire.
G603 Noise condenser Shielding between the rear safing sensor and left side impact sensor (SECOND) has wire.
G701 High mount brake light, Left back-up light, Left inner taillight, Left rear side marker light, Left rear turn signal light, Left taillight/ brake light, License plate lights, Right back-up light, Right inner taillight, Right rear side marker light, Right rear turn signal light,
Right taillight/brake light, Trunk lid release actuator/Trunk lid latch switch
G801 Rear window defogger ( )
1: ’06-07 Touring and Premium models
2: ’07 TYPE S and ’08-09 models
3: ’08-09 models
4: TYPE S and ’08 premium and ’09 models
5: With HID
6: Without navigation system
7: With navigation system
8: ’09 model with navigation system
9: ’06-08 models, and ’09 model without navigation system
10: TYPE S model
4
512 4
5
82 3
7
3
67
9
10
2
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Loss of Communication DTC cross-reference chart
BUS OFF and Internal Error CodesDTC type Related Unit MICU Gauge ControlModuleClimate Control
Unit HandsFreeLink
Control Unit Immobilizer-
Keyless Control Unit
Transmitting Control Unit Message Receiving Unit/Loss of Communication DTC
MICU Gauge ControlModuleClimate Control
Unit Immobilizer-
Keyless Control Unit
22-76Multiplex Integrated Control System
General Troubleshooting Information (cont’d)
When an ECU on the CAN circuit is unable to communicate with other ECUs on the CAN circuit, one or more of the
control units will set a loss of communications DTC. Use this chart to find the control unit that is not communicating.
1. Find the Transmitting Control Unit that is in the same row as all of the loss of communication DTCs retrieved.
2. Do the input test for the transmitting control unit.
BUS OFF B1000 B1150 B1200 B1750 B1900
ECU (CPU) Error B1001
ECU (EEPROM)
Error B1002 B1152 B1202
ECU (Internal)
Error B1792
MICU RM B1188 HLSW B1155
WIPSW B1156 MICU B1157
DOORSW B1159
DRLOCKSW B1160 B1905
Gauge Control
Module VSP/NE B1011 B1205
A/T B1008 B1906
CDS (SRS) B1032 ECT B1206
ECM/PCM ENG B1168 A/T B1169
ABS or VSA
modulator-
control unit ABS or VSA B1170
TPMS Control
unit TPMS B1173
EPS Control unit EPS B1183
SRS SRS B1187
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Gauge Control ModuleDTC Description DTC typePage
22-78Multiplex Integrated Control System
DTC Troubleshooting Index (cont’d)
B1150 Communication bus line error (BUS-OFF)
Loss of
communication (see page 22-106)
B1152 Gauge control m odule internal error (EEPROM error) Internal error (see page 22-262)
B1155 Gauge control m odule lost communication with the MICU
(Headlight switch message) Loss of
communication(see page 22-263)
B1156 Gauge control m odule lost communication with the MICU
(Wiper switch message) Loss of
communication(see page 22-263)
B1157 Gauge control m odule lost communication with the MICU
(MICU message) Loss of
communication(see page 22-264)
B1159 Gauge control m odule lost communication with the MICU
(DOORSW message) Loss of
communication(see page 22-263)
B1160 Gauge control m odule lost communication with the MICU
(DRLOCKSW message) Loss of
communication(see page 22-264)
B1168 Gauge control m odule lost communication with the ECM/PCM
(Engine messages) Loss of
communication(see page 22-265)
B1169 Gauge control m odule lost communication with the PCM (A/T
message) Loss of
communication(see page 22-265)
B1170 Gauge control m odule lost communication with ABS/VSA
modulator-control unit (ABS/VSA message) Loss of
communication(see page 22-265)
B1173 Gauge control m odule lost communication with the TPMS
control unit (TMPS message) (’08-09 models) Loss of
communication(see page 22-266)
B1175 Fuel level sensor (Fuel gauge sending unit) circuit open Signal error (see page 22-267)
B1176 Fuel level sensor (Fuel gauge sending unit) circuit short Signal error (see page 22-268)
B1177 Battery voltage a bnormal (’06 model) Battery voltage (see page 22-269)
B1178 F-CAN communication line error Loss of
communication (see page 22-265)
B1183 Gauge control m odule lost communication with EPS control unit
(EPS message) Loss of
communication(see page 22-270)
B1187 Gauge control m odule lost communication with the SRS unit
(SRS message) Loss of
communication(see page 22-265)
B1188 Gauge control m odule lost communication with the MICU (RM
message) Loss of
communication(see page 22-263)
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Body Controller Area Network (B-CAN) and Fast Controller Area Network (F-CAN)
22-80 Multiplex Integrated Control System
System Description
GAUGE CONTROL MODULE (TACH)
CAN H CAN L
MICU
ECM/PCM
(F-CAN)
(B-CAN)UNDER-DASH FUSE/RELAY BOX
DATA LINK CONNECTOR
SRS UNIT
ABS MODULATOR-CONTROL UNIT*1
VSA MODULATOR-CONTROL UNIT*2
YAW RATE-LATERAL
ACCELERATION SENSOR*2
EPS CONTROL UNIT
TPMS CONTROL UNIT*3






 F-CAN
TRANSCEIVER
B-CAN
TRANSCEIVER
IMMOBILIZER-
KEYLESS CONTROL
UNITCLIMATE
CONTROL
UNIT
HANDSFREELINK
CONTROL UNIT*4
*1: ’06 07 Touring and Premium models
*2: ’07 TYPE S and ’08 09 models
*3: ’08 09 models
*4: ’09 model with navigation system
The body controller area network (B-CAN) and the fast controller area network (F-CAN) share information between
multiple electronic control units (ECUs). B-CAN communication moves at a slower speed (33.33 kbps) for convenience
related items and for other functions. F-CAN information moves at a faster speed (500 kbps) for ‘‘real time’’ functions
such as fuel and emissions data. To allow both systems to share information, the gauge control module translates
information from B-CAN to F-CAN and from F-CAN to B-CAN.
 The single wire method is used between the units not requiring the communication to move at a fast speed.
 Using a single wire method reduces the number of the wires used on the body controller area network.
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Self-diagnostic Function
22-83
GAUGE CONTROL MODULE
CAN H CAN L B-CAN
B-CAN (33.33 kbps)
F-CAN (500 kbps)
SRS UNIT MICU
ECM/PCM
ABS MODULATOR-
CONTROL UNIT* IMMOBILIZER-
KEYLESS
CONTROL UNIT
K-LINE
DATA LINK
CONNECTOR HDS CLIMATE CONTROL
UNIT
TMPS CONTROL
UNIT* EPS CONTROL
UNIT
NAVIGATION
UNIT
VSA MODULATOR-
CONTROL UNIT*
HANDSFREELINK
CONTROL UNIT*
AUDIO UNIT
YAWRATE-LATERAL
ACCELERATION
SENSOR*
*1: ’06-08 Touring and Premium models
*2: ’07 TYPES and ’08-09 models
*3: ’08-09 models
*4: ’09 model with navigation system
1
3 2
4
2
By connecting the HDS to the data link connector (DLC), the HDS can retrieve the diagnostic results from the MICU via
a diagnostic line called K-LINE. The K-LINE is distinguished from the CAN line, and connected to the CAN related ECUs.
The MICU is a gateway between the HDS and B-CAN related ECUs, and sends B-CAN diagnostic results to the HDS.
When doing a function test with the HDS, the HDS sends an output signal through the K-LINE to the MICU. The MICU
either relays the request to another ECU, or commands the function its self.
(cont’d)
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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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22-100Multiplex Integrated Control System
Circuit Diagram
K5
G3 Q1 Q9
D2
LT BLU RED
No. 22 (7.5 A)
BLK
G501 T34
G602E6
BLK SG
G601E33
BLK
PG
H2
H1 Q6
B-CAN
MICU
G401 PNK
K4 G2
UNDER-DASH FUSE/RELAY BOX
UNDER-HOOD FUSE/RELAY BOX
WHTBRN
No. 10 (7.5 A)
BLK F20
No. 2 (IG) (50 A)
ORNIG1
BAT
BLU
WHT
No. 23 (10 A)
BATTERY
IGNITION SWITCH
No. 1 (BAT) (100 A)
MICU
SERVICE
CHECK
CONNECTOR IG1 HOT in ON (II)
and START (III)
CEILING
LIGHT
H1
D4 D2
LT BLU K-LINEQ8





 AUDIO UNIT*6
NAVIGATION
UNIT*5
DATA LINK
CONNECTOR
IMMOBILIZER-
KEYLESS
CONTROL UNIT
SRS UNIT
TPMS CONTROL
UNIT*3
ABS
MODULATOR-
CONTROL UNIT *1 EPS CONTROL
UNIT
VSA MODULATOR-
CONTROL UNIT *2 IG1
LT BLU
LT BLU F14
F28VBU
16
G501 BLK
1
18
PNK
No. 35 (7.5 A)
FUSE
(UNDER-DASH
FUSE/
RELAY BOX)
No. 23 (10 A)
FUSE
(UNDER-DASH
FUSE/
RELAY BOX)
15
PUR
WHT
HANDSFREELINK
CONTROL UNIT *4
(B-CAN)
PNK
PNK
(B-CAN)
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