2006 ACURA CSX battery

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DTC B1000:
YES
NO
YES
NO Control Unit Connector
YES
NO Control Unit Appropriate Connector
22-102Multiplex Integrated Control System
DTC Troubleshooting
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.
Go to step 5.
Intermittent failure, the communication bus
line is OK at this time. Check for loose or poor
connections, or worn/shorted wires. If the
connections are good, check the battery condition
(see page 22-67) and the charging system.
5. Check for DTCs with the HDS.
Go to step 6.
Faulty MICU; replace the under-dash fuse/
relay box (see page 22-66). 6. Turn the ignition switch to LOCK (0).
7. Disconnect the appropriate connector at each
control unit in the table one at a time. Clear the
DTCs, then recheck for DTCs after each unit is
disconnected.
Gauge control
module (tach) 36P connector
Immobilizer-keyless
control unit 7P connector
Climate control unit 32P connector
HandsFreeLink
control unit 28P connector
Go to step 8.
Check the power and grounds to the control
unit that was disconnected when B1000 did not
reset. If OK, replace the control unit.
8. Disconnect all of the appropriate connectors for each of the units in the table.
Gauge control
module (tach) 36P connector
Immobilizer-keyless
control unit 7P connector
Climate control unit 32P connector
HandsFreeLink
control unit 28P connector
Is DTC B1000 indicated?
Ar e DT Cs B1008, B1011, and B1032 al soindicated? Is DT C B1000 indicated with each individual unit
d i sconnect ed ?
08/08/21 14:25:01 61SNR030_220_0104
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DYNOMITE -2009-

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YES
NO
YES
NO YES
NO
DTC B1001:
DTC B1002:
22-10322-103
UNDER-DASH FUSE/RELAY BOX CONNECTOR Q (16P)
B-CAN (PNK)
UNDER-DASH FUSE/RELAY BOX CONNECTOR Q (16P) B-CAN (PNK)
9. Disconnect under-dash fuse/relay box connector Q(16P).
10. Check for continuity between under-dash fuse/relay box connector Q (16P) No. 6 terminal and body
ground.
Repair a short to ground in the wire between
the under-dash fuse/relay box and the affected
control unit.
Go to step 11.
11. Measure the voltage between under-dash fuse/ relay box connector Q (16P) terminal No. 6 and
body ground.
Replace the under-dash fuse/relay box
(see page 22-66).
Repair a short to power in the wire between
the under-dash fuse/relay box and the affected
control unit. 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.
Faulty MICU; replace the under-dash fuse/
relay box (see page 22-66).
Intermittent failure, the MICU is OK at this
time. Check for loose or poor connections. If the
connections are good, check the battery condition
(see page 22-67) and the charging system.MICU (CPU) Error
MICU (EEPROM) Error
Wire side of female terminals
Wire side of female terminals
Is there continuity?
Is t her e l ess t han 0.1 V ? Is DT C B1001 and / or B1002 ind icated ?
08/08/21 14:25:01 61SNR030_220_0105
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DYNOMITE -2009-

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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
ProCarManuals.com
DYNOMITE -2009-

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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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DYNOMITE -2009-


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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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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
08/08/21 14:25:02 61SNR030_220_0113
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DYNOMITE -2009-

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22-116Keyless/Power Door Locks/Security System
Circuit Diagram
Q1
G2
G21 D2
ORN
GRN
BRN
G503 G501 G504 G504 IG1 HOT in ON (II) and START (III)
8 T22
LT BLU
BLK10LOCK
LOCK
YEL
T30
1
6
PUR
T29
BLK 2
11
BLK
T27
GRY
19 17 T28
BLU
LOCK LOCK
KEY
MICU No. 25 (20 A)
ORN
IG1
5
BLK
No. 23 (10 A)
T24
LT GRN 6
UNDER-DASH FUSE/RELAY BOX
WHTT23
7
LOCK
PNK
T32
9
8
BRN
T31 No. 10 (7.5 A)
BLU
IGNITION SWITCH
IG1
BAT
BLU
WHT
No. 4 (P/W) (40 A)
BATTERY
No. 1 (BAT) (100 A) No. 2 (IG) (50 A)
UNDER-HOOD FUSE/RELAY BOX
UN-
LOCKUN-
LOCK
UN-
LOCK
DRIVER’S
DOOR LOCK
SWITCH DRIVER’S
DOOR KEY
CYLINDER
SWITCHDRIVER’S
DOOR LOCK
KNOB SWITCH
DOOR
LOCK
KNOB
DOOR
LOCK
KNOB
FRONT
PASSENGER’S
DOOR LOCK
KNOB SWITCH
FRONT
PASSENGER’S
DOOR LOCK
SWITCH
UN-
LOCK
UN-
LOCK
LIGHT
(LED)
LIGHT
(LED)
H1
K2
D4
BBACKUPWHT
08/08/21 14:25:09 61SNR030_220_0118
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DYNOMITE -2009-



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Keyless operation does not work (LOCK,
UNLOCK, PANIC)
YES
NO
YES
NO YES
NO
YES
NO
22-127
IMMOBILIZER-KEYLESS CONTROL UNIT 7P CONNECTOR
VBU (WHT)
IGNITION KEY SWITCH 6P CONNECTOR GND
IG KEY SW
NOTE:
 Before troubleshooting, check the B-CAN DTCs. If any DTC is indicated, troubleshoot the indicated DTC first.
 Before troubleshooting, do the keyless transmitter test (see page 22-142).
1. Turn the ignition switch to ON (II).
2. Try to start the engine.
ThesystemisOK,gotostep3.
Go to the immobilizer symptom
troubleshooting (see page 22- 323).
3. Turn the ignition switch to LOCK (0).
4. Connect the HDS to the data link connector.
5. Close all doors, then turn the ignition switch to ON (II).
6. Enter the BODY ELECTRICAL menu, and check the door switch parameters.
Go to step 7.
Faulty door switch, or shorted door switch
wire. Repair as necessary.
7. Remove the ignition key from the ignition switch.
8. Disconnect the immobilizer-keyless control unit 7P connector. 9. Measure the voltage between immobilizer-keyless
control unit 7P connector terminal No. 1 and body
ground.
Go to step 10.
Check the fuse No. 23 (10 A) in the under-
hood fuse/relay box. If the fuse is blown, replace
the fuse and repair a short to ground in the wire. If
the fuse is OK, repair an open in the wire.
10. Disconnect the ignition key switch 6P connector.
11. At the ignition key switch side, check for continuity between ignition key switch 6P connector terminals
No. 1 and No. 2.
Faulty ignition key switch or short to ground,
replace the steering lock assembly (see page 17-14).
Go to step 12. (cont’d)
Wire side of female terminals
Terminal side of male terminals
Doestheenginestart? Do al l d oor sw i t ches i nd i cat e OF F ? Is there battery voltage?
Is there continuity?
08/08/21 14:26:03 61SNR030_220_0129
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DYNOMITE -2009-