light ACURA CSX 2006 Service Repair Manual

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22-8Relay and Control Unit Locations
Dashboard
GAUGE CONTROL
MODULE (TACH)
GAUGE CONTROL MODULE
(SPEEDO)
POWER WINDOW RELAY PGM-FI MAIN RELAY 2
(FUEL PUMP)
STARTER CUT RELAY
MICU
UNDER-DASH FUSE/
RELAY BOX
View of front side View of rear sideFRONT ACCESSORY POWER SOCKET RELAY
CONSOLE ACCESSORY POWER SOCKET RELAY
FOG LIGHT RELAY
(TYPE S and ’08 PREMIUMand ’09 models)
Wire colors: BLU, WHT, BLK, and PUR
Wirecolors:YEL,GRN,BLK,andPUR
Wire colors: PNK,
WHT, ORN, and WHT
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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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Fuse
Number Amps
Component(s) or Circuit(s) Protected
22-63
23 45
1 16 17
19
18 20
11
12 1413 15
26 27 2928 30
21 22
2423 25
36 37
38
3132
34
33
35
10
67 8
9
21 20 A MICU ( B H/L LO)
30 A MICU ( B H/L LO)
22 Not used
23 Not used
24 20 A Moonroof control unit/motor
25 20 A MICU ( B DR LOCK)
26 20 A Driver’s power window motor (via power window master switch)
27 Not used
28 15 A Console accessory power socket (via console accessory power socket relay)
29 15 A Front accessory power socket (via front accessory power socket relay)
30 20 A Front passenger’s power window motor
31 Not used
32 20 A Moonroof control unit/motor, Moonroof switch , Right rear power window motor
33 20 A Left rear power window motor
34 Not used
35 7.5 A Audio unit , Console accessory power socket relay, Front accessory power socket relay, HandsFreeLink control unit , Ignition key switch, Navigation unit , Stereo amplifier
36 10 A Climate control unit, Driver’s seat heater switch, Fan control relay and radiator fan relay (via A/C diode), Passenger’s seat heater switch, Power mirrors (via power mirror switch), Under-hood fuse/relay box (A/C
compressor clutch relay, Blower motor relay, Power mirror defogger relay, Rear window defogger relay)
37 7.5 A MICU (daytime running lights power supply)
38 30 A MICU (IG 1 WIPER)
1: ’06-07 models
2: TYPE S model
3: Without HID
4: With HID
5: ’09 model with navigation system
6: Without navigation system
7: With navigation system3
4
1
6
5 72
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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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Special Tools Required
Relay Test
Normally-open type
22-70Relays
Power Relay Test
07AAC-000A1A0
31
42
3 42
1
Relay puller 07AAC-000A1A0
Use this chart to identify the type of relay, then do the
test listed for it. Carefully remove the relays using the
relay puller. Do not use pliers. Pliers will damage the
relay.
A/C compressor clutch relay Normally- open type
A/C condenser fan relay
Blower motor relay
Console accessory power socket
relay
Electronic throttle control system
(ETCS) control relay
Fog light relay
Front accessory power socket
relay
Ignition coil relay
PGM-FI main relay 1 (FI MAIN)
PGM-FI main relay 2 (FUEL PUMP)
PGM-FI subrelay
Power window relay
Radiator fan relay
Rear window defogger relay
Seat heater relay (HIGH)
Starter cut relay
Fan control relay Five-terminal
type
Power mirror defogger relay
Seat heater relay (LOW)
: TYPE S and ’08 PREMIUM and ’09 models Check for continuity between the terminals.
 There should be continuity between terminals No. 1 and No. 2 when the battery positive terminal is
connected to terminal No. 4, and the battery negative
terminal is connected to terminal No. 3.
 There should be no continuity between terminals No. 1 and No. 2 when power is disconnected.
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) MICUDTC Description DTC typePage
22-77
DTC Troubleshooting Index
NOTE: Check the ECM/PCM for DTCs and troubleshoot ECM/PCM (see page 11-3) or F-CAN loss of communication
errors first, then record all DTCs, and sort them by DTC type using the DTC troubleshooting index, then troubleshoot
the DTC(s) in this order.
 Battery voltage DTCs
 Internal error DTCs
 Loss of communication DTCs (beginning with the lowest number first; for example, if B1008 and B1011 are retrieved, troubleshoot B 1008 first).
 Signal error DTCs
B1000 Communication bus line error (BUS-OFF) Loss of communication(see page 22-102)
B1001 MICU internal error (CPU error) (’06-08 models) Internal error (see page 22-103)
B1002 MICU internal error ( EEPROM error) Internal error (see page 22-103)
B1008 MICU lost communication with gauge control m odule (A/T
message) Loss of
communication(see page 22-104)
B1011 MICU lost communication with gauge control m odule (VSP/NE
message) Loss of
communication(see page 22-104)
B1026 Front passenger’s door lock switch LOCK/UNLOCK signal error Signal error (see page 22-120)
B1032 MICU lost communication with the SRS unit (CDS message) CDS (Collision detection signal) input circuit malfunction (’06-07
models) Signal error (see page 22-105)
B1036 IG1 line input error Signal error (see page 22-105)
B1077 Windshield wiper (As) signal error Signal error (see page 22-224)
B1078 Daytime r unning lights signal error Signal error (see page 22-157)
B1127 Driver’s door key cylinder switch signal error Signal error (see page 22-121)
B1128 Driver’s door lock switch signal error Signal error (see page 22-123)
B1129 Driver’s door lock knob switch signal error Signal error (see page 22-124)
B1275 Combination light switch OFF position circuit malfunction (’07- 09 models) Signal error (see page 22-159)
B1276 Combination light switch parking (SMALL) position circuit malfunction (’07-09 models) Signal error (see page 22-159)
B1278 Headlight switch ON position circuit malfunction (’07-09 models) Signal error (see page 22-159)
B1279 Headlight switch DIMMER position circuit malfunction (’07-09 models) Signal error (see page 22-161)
B1280 Turn signal switch circuit malfunction (’07-09 models) Signal error (see page 22-186)
B1281 Windshield wiper switch MIST position circuit malfunction (’07- 09 models) Signal error (see page 22-226)
B1282 Windshield wiper switch INT position circuit malfunction (’07-09 models) Signal error (see page 22-226)
B1283 Windshield wiper switch LOW position circuit malfunction (’07- 09 models) Signal error (see page 22-226)
B1284 Windshield wiper switch HIGH position circuit malfunction (’07- 09 models) Signal error (see page 22-226)
(cont’d)
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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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Climate Control UnitDTC Description DTC typePage
HandsFreeLink Control Unit DTC Description DTC typePage
Immobilizer-Keyless Control Unit DTC Description DTC typePage
22-79
B1200 Communication bus line error (BUS-OFF) Loss of
communication (see page 22-107)
B1202 Climate control unit internal error ( EEPROM error)Internal error (see page 21-28)
B1205 Climate control unit lost communication with the gauge control module (VSP/NE message) Loss of
communication(see page 21-28)
B1206 Climate control unit lost communication with the gauge control module (ECT message) Loss of
communication(see page 21-28)
B1207 Climate control unit lost communication with the gauge control module (ILLUMI message) Loss of
communication(see page 21-28)
B1220 Recirculation control motor circuit short Signal error (see page 21-29)
B1225 In-car temperature sensor circuit open Signal error (see page 21-31)
B1226 In-car temperature sensor circuit short Signal error (see page 21-32)
B1227 Outside air temperature sensor circuit open Signal error (see page 21-33)
B1228 Outside air temperature sensor circuit short Signal error (see page 21-34)
B1229 Sunlight sensor circuit open Signal error (see page 21-35)
B1230 Sunlight sensor circuit short Signal error (see page 21-36)
B1231 Evaporator temperature sensor circuit open Signal error (see page 21-37)
B1232 Evaporator temperature sensor circuit short Signal error (see page 21-39)
B1233 Air mix control motor circuit open Signal error (see page 21-40)
B1234 Air mix control motor circuit short Signal error (see page 21-41)
B1235 Air mix control motor stuck Signal error (see page 21-42)
B1239 Mode control motor circuit open or short Signal error (see page 21-44)
B1240 Mode control motor, linkage, door malfunctionSignal error (see page 21-46)
B1241 Blower motor circuit malfunction Signal error (see page 21-47)
B2983 Recirculation control motor, linkage, door malfunctionSignal error (see page 21-51)
B2986 Recirculation control motor circuit open Signal error (see page 21-52)
B1750 Communication bus line error (BUS-OFF) Loss of
communication (see page 22-107)
B1775 Microphone input/output short to power/open Signal error (see page 23-376)
B1776 Microphone input/output short to ground/open Signal error (see page 23-377)
B1779 HFL switch (HFL talk/HFL back buttons) circuit open/short Signal error (see page 23-379)
B1780 HFL switch (HFL talk/HFL back buttons) circuit short Signal error (see page 23-381)
B1792 HandsFreeLink control unit internal error Internal error (see page 23-382)
B1900 Communication bus line error (BUS-OFF) Loss of
communication (see page 22-108)
B1905 Immobilizer-keyless control unit lost communication with the MICU (DRLOCKSW message) Loss of
communication(see page 22-317)
B1906 Immobilizer-keyless control unit lost communication with the gauge control module (A/T message) Loss of
communication(see page 22-318)
B1925 Ignition key switch signal error Signal error (see page 22-319)
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MICU Control Functions Index
SystemFunction
22-82Multiplex Integrated Control System
System Description (cont’d)
The MICU (built into the under-dash fuse/relay box) is one of the B-CAN components. The MICU controls many
systems related to the body controller area and security system, and also works as a gateway to the diagnose the
other B-CAN connected ECUs with the HDS.
Refer to the each system circuit diagram in detail.
Multiplex Control Sends the switch input signal information to the MICU and outputs the information. The MICU controls the ECUs electric load and communication based upon the information
received the B-CAN.
On-Board Diagnosis The MICU has a gateway function which sends the results of the MICU internal diagnosis and the B-CAN connected ECUs diagnosis to the HDS.
Self-Diagnosis Test mode 1 diagnoses the communication line between the MICU and B-CAN connected unit. Test mode 2 checks the switch inputs connected to the MICU.
Interior Light(s) The MICU controls the interior lights ON, OFF and dimming based upon the information of the related switches and/or the B-CAN related information.
Sleep Function The MICU has a sleep function, which it enters during the power down mode.
The MICU also controls the function of these circuits:  Entry lights control (map lights and ceiling light)
 Exterior lights control (including the daytime running lights control)
Horn
 Interlock system
 Key-in reminder
 Keyless entry
 Lights-on reminder
 Power door locks
 Power window key-off timer
 Seat belt reminder
 Security alarm
 Turn signal/hazard flasher
 Wiper/washer
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