ACURA CSX 2006 Service Repair Manual

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DTC B1008: DTC B1011:
YES
NO
YES
NO YES
NO
YES
NO
22-10422-104Multiplex Integrated Control System
DTC Troubleshooting (cont’d)
MICU Lost Communication with
Gauge Control Module (A/T Message) MICU Lost Communication with
Gauge Control Module (VSP/NE Message)
NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-93).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the gauge control module
is OK at this time. Check for loose or poor
connections at the gauge control module (tach) 36P
connector and at under-dash fuse/relay box
connector Q (16P). If the connections are good,
check the battery condition (see page 22-67) and
the charging system.
5. Check for DTCs with the HDS.
Check for an open in the communication
circuit between the MICU and the gauge control
module (tach). If the circuit is bad, repair the
open.
Go to the gauge control module (tach) input
test (see page 22-271). NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-93).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the gauge control module
is OK at this time. Check for loose or poor
connections at the gauge control module (tach) 36P
connector and at under-dash fuse/relay box
connector Q (16P). If the connections are good,
check the battery condition (see page 22-67) and
the charging system.
5. Check for DTCs with the HDS.
Check for an open in the communication
circuit between the MICU and the gauge control
module (tach). If the circuit is bad, repair the
open.
Go to the gauge control module (tach) input
test (see page 22-271).
Is DTC B1008 indicated?
Ar e DT Cs B1011 and B1032 al so i nd i cat ed w i t hDT C B1008? I s DT C B1011 i nd i cat ed ?
Ar e DT Cs B1008 and B1032 also ind icated w ithDT C B1011?
08/08/21 14:25:01 61SNR030_220_0106
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DTC B1032: DTC B1036:
YES
NO
YES
NO YES
NO
YES
NO
22-10522-105
MICU Lost Communication with
the SRS Unit (CDS Message) CDS (Collision
detection signal) input circuit malfunction IG1 Line Input Error
NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-93).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the gauge control module
is OK at this time. Check for loose or poor
connections at the gauge control module (tach) 36P
connector, and at under-dash fuse/relay box
connector Q (16P). If the connections are good,
check the battery condition (see page 22-67) and
the charging system.
5. Check for DTCs with the HDS.
Check for an open in the communication
circuit between the MICU and the gauge control
module (tach). If the circuit is bad, repair the
open.
Go to the gauge control module (tach) input
test (see page 22-271). NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-93).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.
Go to step 5.
Intermittent failure, the system is OK at this
time. Check for loose or poor connection at the
gauge control module (tach) 36P connector, and at
under-dash fuse/relay box connector Q (16P). If the
connections are good, check the battery condition
(see page 22-67) and the charging system.
5. Check for DTCs with the HDS.
Troubleshoot the indicated DTC.
Go to step 6.
6. Turn the ignition switch to LOCK (0).
7. Turn the ignition switch to ON (II).
(cont’d)
Is DTC B1032 indicated?Ar e DT Cs B1008 and B1011 al so i nd i cat ed w i t hDT C B1032? Is DTC B1036 indicated?
Is DT C B1008 ind icated w ith DT C B1036?
08/08/21 14:25:01 61SNR030_220_0107
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YES
NO YES
NO
DTC B1150:
22-10622-106Multiplex Integrated Control System
DTC Troubleshooting (cont’d)
GAUGE CONTROL MODULE (TACH) 36P CONNECTOR
IG1 (BRN)
8. Measure the voltage between gauge controlmodule (tach) 36P connector terminal No. 17 and
body ground.
Faulty MICU; substitute a known-good
under-dash fuse/relay box and recheck (see page
22-66).
Check No. 10 (7.5 A) fuse in the under-dash
fuse/relay box. If the fuse is OK, check for an open
in the wire between the under-dash fuse/relay box
and the gauge control module (tach), or repair a
short in the wire between the under-dash fuse/relay
box and the gauge control module (tach). NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-93).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.
Troubleshooting DTC B1000.
If only DTC B1150 is present, replace the
gauge control module (tach) assembly. If no DTCs
are present, it’s an intermittent failure, the system
is OK at this time. Check for loose or poor
connections at the gauge control module (tach) 36P
connector, and at under-dash fuse/relay box
connector Q (16P).Communication Bus Line Error
(Bus OFF)
Wire side of female terminals
Is there battery voltage? Ar e DT Cs B1001, B1008, B1011, B1032, and or
B1900 also ind icated w ith DT C B1150?
08/08/21 14:25:02 61SNR030_220_0108
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DTC B1200: DTC B1750:
YES
NO YES
NO
22-10722-107
Communication Bus Line Error
(Bus OFF) Communication Bus Line Error
(Bus OFF)
NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-93).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.
Troubleshoot DTC B 1000.
If only DTC B1200 is present, replace the
climate control unit. If no DTCs are present, it’s an
intermittent failure, the system is OK at this time.
Check for loose or poor connections at the climate
control unit 32P connector, and at under-dash fuse/
relay box connector Q (16P). NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-93).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.
Troubleshoot DTC B1000.
If only DTC B1750 is present, replace the
HandsFreeLink control unit. If no DTCs are present,
it’s an intermittent failure, the system is OK at this
time. Check for loose or poor connections at the
HandsFreeLink control unit 28P connector, and at
under-dash fuse/relay box connector Q (16P).
Ar e DT Cs B1000, B1008, B1011, B1032, and or B1900 also ind icated w ith DT C B1200? Ar e DT Cs B1000, B1008, B1011, and B1032 and or
B1900 also ind icated w ith DT C B17 50?
08/08/21 14:25:02 61SNR030_220_0109
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DTC B1900:
YES
NO
22-108 Multiplex Integrated Control System
DTC Troubleshooting (cont’d)
Communication Bus Line Error
(Bus OFF)
NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-93).
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.
Troubleshoot DTC B 1000.
If only DTC B1900 is present, replace the
immobilizer-keyless control unit. If no DTCs are
present, it’s an intermittent failure, the system is
OK at this time. Check for loose or poor
connections at the immobilizer control unit 7P
connector, and at under-dash fuse/relay box
connector Q (16P).
Ar e DT Cs B1000, B1008, B1011, and B1032 also ind icated w ith DT C B1900?
08/08/21 14:25:02 61SNR030_220_0110
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22-109
MICU Input Test
UNDER-DASH FUSE/RELAY BOX CONNECTOR E (42P)BLK
BLK
UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P)
BLK ORN UNDER-DASH FUSE/RELAY BOX CONNECTOR G (21P)
1. Before troubleshooting the multiplex integrated control system, troubleshoot the system using B-CAN System
Diagnosis Test Mode A (see page 22-93).
2. Check the No. 10 (7.5 A) fuse in the under-dash fuse/relay box. If the fuse is blown, replace it and go to step 3.
3. Disconnect under-dash fuse/relay box connectors E, F, G, K, and T. NOTE: All connector views are wire side of female terminals.
(cont’d)
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22-110Multiplex Integrated Control System
MICU Input Test (cont’d)
UNDER-DASH FUSE/RELAY BOX CONNECTOR K (8P)
PNK
BLK
UNDER-DASH FUSE/RELAY BOX CONNECTOR T (34P)
4. Inspect the connector and socket terminals to be sure they are all making good contact.
 If the terminals are bent, loose or corroded, repair them as necessary and recheck the system.
 IftheterminalslookOK,gotostep5.
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Cavity Wire Test conditionTest: Desired result Possible cause if desired result is
not obtained
Cavity Wire Test condition Test: Desired result Possible cause if desired result is
not obtained
22-111
5. With the connector still disconnected, do these input tests at the following connectors.
 If any test indicates a problem, find and correct the cause, then recheck the system.
 If all the input tests prove OK, go to step 6.






G2 ORN Under all conditions Measure the voltage to ground:
There should be battery voltage.Blown No. 23 (10 A) fuse in the
under-hood fuse/relay box
An open in the wire
K4 PNK Under all conditions Attach to ground: The ceiling light should come
on.Blown No. 22 (7.5 A) fuse in the
under-hood fuse/relay box
Blown bulb(s)
Faulty ceiling light
An open in the wire
6. Reconnect the connectors to the under-dash fuse/relay box, and do these input tests at the following connectors.  If any test indicates a problem, find and correct the cause, then recheck the system.
 If all the input tests prove OK, the MICU must be faulty; replace the under-dash fuse/relay box.








E6 BLK Under all conditions Measure the voltage to ground:
There should be less than 0.5 V.Poor ground (G602)
An open in the wire
E33 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G601)
An open in the wire
F20 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G401)
An open in the wire
T34 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.Poor ground (G501)
An open in the wire
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22-112Keyless/Power Door Locks/Security System
Component Location Index
NAVIGATION UNIT or
AUDIO UNIT
IMMOBILIZER-KEYLESS
CONTORL UNIT
(With built-in receiver)
SECURITY INDICATOR GAUGE CONTORL MODULE
(SPEEDO)
HEADLIGHT
HOOD SWITCH
MICU
(Built into the under-
dash fuse/relay box)
HORN
TRANSMITTER
LOCK BUTTON TRUNK BUTTON
UNLOCK BUTTON
IGNITION KEY PANIC BUTTONSymptom Troubleshooting,
page 22-126
Replacement, page 22-332
Replacement, page 22-174
Adjustment, page 22-173
Bulb Replacement, page 22-177
Test, page 22-141
Input Test, page 22-131
Test/Replacement, page 22-146
Test/Replacement, page 22-142
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22-113
LEFT REAR DOOR LOCK
ACTUATOR/
KNOB SWITCHDRIVER’S DOOR KEY CYLINDER SWITCH
DRIVER’S DOOR LOCK SWITCH
(Built into the power
window master switch) DRIVER’S DOOR LOCK
ACTUATOR/
KNOB SWITCH TRUNK LID RELEASE ACTUATOR/
LATCH SWITCH
LEFT REAR DOOR SWITCH IGNITION KEY SWITCH
DRIVER’S DOOR
SWITCH
RIGHT REAR DOOR LOCK
ACTUATOR/KNOB SWITCHFRONT PASSENGER’S
DOOR SWITCHFRONT PASSENGER’S DOOR
LOCK ACTUATOR/KNOB SWITCH
FRONT PASSENGER’S
DOOR LOCK SWITCH
RIGHT REAR DOOR SWITCH
LICENSE PLATE LIGHTS
INNER TAILLIGHTTAILLIGHTActuator Test,
page 22-137
Knob Switch Test,
page 22-138 Test, page 22-140
Replacement, page 20-9
Test, page 22-139 Acutuator Test,page 22-137
Knob Switch Test, page 22-138 Actuator Test, page 22-141
Latch Switch Test, page 22-200
Test, page 22-207
Actuator Test, page 22-137
Knob Switch Test, page 22-138 Actuator Test, page 22-137
Knob Switch Test, page 22-138
Test, page 22-139
Replacement, page 22-139
Replacement, page 22-180
Replacement,page 22-179
Replacement, page 22-179
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