2006 ACURA CSX ignition


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4-26Charging System
Charging System Indicator Circuit Troubleshooting
ALT L
(WHT/BLU)
ECM/PCM CONNECTOR B (44P)
NOTE: Check for stored DTCs in the PGM-FI before
troubleshooting the charging system indicator.
1. Turn the ignition switch to ON (II).
Go to step 2.
Go to step 14.
2. Start the engine. Hold the engine speed at 2,000 rpm for 1 minute.
Charging system indicator circuit is OK. Go
to the alternator and regulator circuit
troubleshooting (see page 4-28).
Go to step 3.
3. Do the gauge control module self-diagnostic function procedure (see page 22-241).
Go to step 4.
Replace the gauge control module (tach)
(see page 22-277).
4. Turn the ignition switch to LOCK (0).
5. Disconnect the alternator 4P connector.
6. Turn the ignition switch to ON (II).
Replace the alternator (see page 4-34), or
repair the alternator (see page 4-38).
Go to step 7. 7. Turn the ignition switch to LOCK (0).
8. Connect the Honda Diagnostic System (HDS) to the
data link connector (DLC) (see step 2 on page 11-3).
9. Turn the ignition switch to ON (II).
10. Make sure the HDS communicates with the vehicle and the engine control module (ECM)/powertrain
control module (PCM). If it does not communicate,
troubleshoot the DLC circuit (see page 11-204).
11. Jump the SCS line with the HDS, then turn the ignition switch to LOCK (0).
NOTE: This step must be done to protect the ECM/
PCMfromdamage.
12. Disconnect ECM/PCM connector B (44P).
13. Check for continuity between ECM/PCM connector terminal B42 and body ground.
Repair short to ground in the wire between
alternator 4P connector terminal No. 3 and ECM/
PCM connector terminal B42.
Update the ECM/PCM if it does not have the
latest software (see page 11-227), or substitute a
known-good ECM/PCM (see page 11-7), then
recheck. If the symptom/indication goes away with
a known-good ECM/PCM, replace the original ECM/
PCM (see page 11-228).
Terminal side of female terminals
Does t he char gi ng sy st em i nd i cat or come on?
Does t he char gi ng sy st em i nd i cat or go of f ?
Does t he char gi ng sy st em i nd i cat or f l ash?
Does t he char gi ng sy st em i nd i cat or go of f ? Is there continuity?
08/08/21 14:10:11 61SNR030_040_0027
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DYNOMITE -2009-

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4-27
ALTERNATOR 4P CONNECTOR
L
(WHT/BLU) JUMPER
WIER
ALT L
(WHT/BLU)
ECM/PCM CONNECTOR B (44P)
L
(WHT/BLU)
ALTERNATOR
4P CONNECTOR
14. Do the gauge control module self-diagnostic function procedure (see page 22-241).
Go to step 15.
Replace the gauge control module (tach)
(see page 22-277).
15. Turn the ignition switch to LOCK (0).
16. Disconnect the alternator 4P connector.
17. Connect alternator 4P connector terminal No. 3 and body ground with a jumper wire.
18. Turn the ignition switch to ON (II). Replace the alternator (see page 4-34), or
repair the alternator (see page 4-38).
Disconnect the jumper wire, then go to step
19.
19. Turn the ignition switch to LOCK (0). 20. Connect the HDS to the DLC (see step 2 on page
11-3).
21. Turn the ignition switch to ON (II).
22. Make sure the HDS communicates with the vehicle and the ECM/PCM. If it does not communicate,
troubleshoot the DLC circuit (see page 11-204).
23. Jump the SCS line with the HDS, then turn the ignition switch to LOCK (0).
NOTE: This step must be done to protect the ECM/
PCMfromdamage.
24. Disconnect ECM/PCM connector B (44P).
25. Check for continuity between ECM/PCM connector terminal B42 and alternator 4P connector terminal
No. 3.
Update the ECM/PCM if it does not have the
latest software (see page 11-227), or substitute a
known-good ECM/PCM (see page 11-7), then
recheck. If the symptom/indication goes away with
a known-good ECM/PCM, replace the original ECM/
PCM (see page 11-228).
Repair open in the wire between alternator 4P
connector terminal No. 3 and ECM/PCM connector
terminal B42.
Wire side of female terminals Terminal side of female terminals
Wire side of
female terminals
Does t he char gi ng sy st em i nd i cat or f l ash?
Does t he char gi ng sy st em i nd i cat or come on? Is there continuity?
08/08/21 14:10:11 61SNR030_040_0028
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DYNOMITE -2009-



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4-29
Alternator Control Circuit Troubleshooting
BATTERY
ALTERNATOR
4P CONNECTOR C (WHT/GRN) ALT C
(WHT/GRN)
ECM/PCM CONNECTOR B (44P)
1. Connect the Honda Diagnostic System (HDS) to the
data link connector (DLC) (see step 2 on page 11-3).
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the vehicle and the engine control module (ECM)/powertrain
control module (PCM). If it does not communicate,
troubleshoot the DLC circuit (see page 11- 204).
4. Check for DTCs (see page 11-3). If a DTC is present, diagnose and repair the cause before continuing
with this test.
5. Disconnect the alternator 4P connector.
6. Start the engine, and turn on the headlights to high beam.
7. Measure the voltage between alternator 4P connector terminal No. 2 and the positive terminal
of the battery.
Go to step 11.
Go to step 8.
8. Jump the SCS line with the HDS, then turn the ignition switch to LOCK (0).
NOTE: This step must be done to protect the ECM/
PCM from damage.
9. Disconnect ECM/PCM connector B (44P). 10. Check for continuity between ECM/PCM connector
terminal B41 and body ground.
Repair short to ground in the wire between
alternator 4P connector terminal No. 2 and ECM/
PCM connector terminal B41.
Update the ECM/PCM if it does not have the
latest software (see page 11-227), or substitute a
known-good ECM/PCM (see page 11-7), then
recheck. If the symptom/indication goes away with
a known-good ECM/PCM, replace the original ECM/
PCM (see page 11-228).
11. Jump the SCS line with the HDS, then turn the ignition switch to LOCK (0).
NOTE: This step must be done to protect the ECM/
PCMfromdamage.
12. Disconnect ECM/PCM connector B (44P).
(cont’d)
Wire side of
female terminals Terminal side of female terminals
Is t her e 1 V or l ess?
Is there continuity?
08/08/21 14:10:12 61SNR030_040_0030
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Special Tools Required
Special Tools Required
4-314-31
Drive Belt ReplacementDrive Belt Auto-tensioner
Inspection
YA9317
A B
A
YA9317
Belt tension release tool Snap-on YA9317 or equivalent,
commercially available
1. Move the auto-tensioner (A) using the belt tension release tool to relieve tension from the drive belt
(B), then remove the drive belt.
2. Install the new drive belt in the reverse order of removal. Belt tension release tool Snap-on YA9317 or equivalent,
commercially available
1. Turn the ignition switch to ON (II), and make sure the A/C switch is OFF, then turn the ignition switch
to LOCK (0).
2. Check the position of the auto-tensioner indicator’s pointer (A). Start the engine then check the position
again with the engine idling. If the position of the
indicator moves or fluctuates very much, replace
the auto-tensioner (see page 4-32).
3. Check for abnormal noise from the tensioner pulley. If you hear abnormal noise, replace the tensioner
pulley(seepage4-33).
4. Remove the drive belt (see page 4-31).
5. Move the auto-tensioner within its limit using the belt tension release tool in the direction shown.
Check that the tensioner moves smoothly and
without any abnormal noise. If the tensioner does
not move smoothly, or you hear abnormal noise,
replace the auto-tensioner (see page 4-32).
(cont’d)
08/08/21 14:10:13 61SNR030_040_0032
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SymptomDiagnostic procedure Also check for
4-45




Set speed does not
resume when the
resume/accel button is
pressed (with the cruise
control main button
pressed on, and set
speed temporarily
canceled by pressing the
brake pedal)
1.
2.
3.
4.
Check for PGM-FI DTCs (see page 11-3).
Check the brake pedal position switch adjustment
(see page 19-6).
Do the cruise control combination switch test (see page
4-49).
Do the cruise control input test (see page 4-47).
Test the cruise control resume/accel switch signal input.
Test the brake pedal position switch signal input. Open circuit, loose or
disconnected
terminal: ORN
Faulty brake pedal
position switch
Set speed does not
resume when the
resume/accel button is
pressed (with the cruise
control main button
pressed on, and set
speed temporarily
canceled by pressing the
clutch pedal) (M/T model) 1.
2.
3.
4.
Check for PGM-FI DTCs (see page 11-3).
Check the clutch pedal position switch adjustment
(see page 12-8).
Do the cruise control combination switch test (see page
4-49).
Do the cruise control input test (see page 4-47).
Test the cruise control resume/accel switch signal input.
Test the clutch pedal position switch signal input. Open circuit, loose or
disconnected
terminal: ORN
Faulty clutch pedal
position switch
With the ignition switch
in ON (II), and the lighting
switch turned on, the
cruise control
combination switch
illumination does not
come on Check the cruise control combination switch (see page 4-49).
08/08/21 14:10:49 61SNR030_040_0046
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DYNOMITE -2009-

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4-46 Cruise Control
Circuit Diagram
(A/T model) 764 5 12
G504 11
3
LIGHTS
CRUISE CONTROL INDICATOR
C21
C20
C12
12 V
5V
C4
G401 3 2 C1
A20
3
2 4
1 (50 A) No. 2
No. 19 (15 A) No. 21 (15 A)
A8
A6
C43 B28 GRY
ORN
ECM/PCM A37
A36
BAT
IG1
A39
A40
C39
C3
A41
THROTTLE BODY
TP SENSOR
No. 3
(10 A)
CRUISE MAIN INDICATOR
DRIVER
GAUGE CONTROL MODULE (TACH)
No. 12
(15 A)
UNDER-HOOD FUSE/RELAY BOX
BATTERY
No. 1 (100 A)
CPU
IG1 HOT in
ON (II) and
START (III)
CABLE
REEL
CAN-
CEL RESUME/
ACCEL
CABLE
REEL
THROTTLE
ACTUATOR
BRAKE
PEDAL
POSITION
SWITCH MULTIPLEX
INTEGRATED
CONTROL UNIT
TRANSMISSION
RANGE SWITCH SET/
DECEL
CRUISE
CONTROL
MAIN
CRUISE CONTROL
DIMMING CIRCUIT
PGM-FI
MAIN
RELAY 1
ETCS
CONTROL
RELAY
UNDER-DASH
FUSE/RELAY
BOX HORN
SWITCH
CRUISE CONTROL
COMBINATION SWITCH
IGNITION
SWITCH
IG1ETCS
ETCSRLY
IGP
MRLY CANL
CANH
BKSWNC
BKSW
TPSB
TPSA
VCC3
ETCSM
NC ATPFWD SG3
ETCSM
CRMTCLS
D8
H1 F9 F6 F5 E1
3
6
19101114
OUTPUT SHAFT
(COUNTERSHAFT)
SPEED SENSOR CLUTCH
PEDAL
POSITION
SWITCH No. 14 (7.5 A) FUSE
(UNDER-DASH
FUSE/RELAY BOX)
YEL
WHT BLU
YEL
LT BLU
BLK LT GRN ORN RED
LT GRN BRN ORN GRN WHT WHT
YEL RED
5V
BLU/WHT LT BLU BLU/YEL BLU
BLU/RED
GRN/YEL GRN RED/BLK RED/BLU
BLK
WHT
D2
F5 42 31
32
41 1
10
679 8 2
21 18 C101
(M/T model) CANL CANH
19
08/08/21 14:10:50 61SNR030_040_0047
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(#'
)Signal to be
tested Test condition Parameter: Desired
resultPossible cause if result is not obtained
4-47
Cruise Control Input Test
NOTE: Always make sure that you have the latest Honda Diagnostic System (HDS) software before doing the input
tests.
1. Connect the HDS to the data link connector (DLC) (see step 2 on page 11-3).
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the vehicle and the engine control module (ECM)/powertrain control module (PCM). If it does not communicate, troubleshoot the DLC circuit (see page 11- 204).
4. Go to PGM-FI, and check for DTCs (see page 11-3).
5. Do the following tests while monitoring parameters in the PGM-FI DATA LIST with the HDS. NOTE: Intermittent failures are often caused by loose circuit connections. While monitoring cruise control inputs,
flex the circuit wires, and note if any of the test results change.

















Brake pedal
position
switch signal
Brake pedal pressed,
then released
CRUISE BRAKE SW
should indicate OFF
when the brake pedal is
pressed and ON when
the brake pedal is
released. Faulty brake pedal position switch
Blown No. 3 (10 A) fuse in the under-
dash fuse/relay box
An open in the wire between the ECM/
PCM and the brake pedal position switch
A wire shorted to ground between the
ECM/PCM and the brake pedal position
switch
Clutch pedal
position
switch signal
(M/T model) Clutch pedal pressed,
then released
SHIFT/CLUTCH SW
should indicate ON
when the clutch pedal
is pressed and OFF
when the clutch pedal
is released. Faulty clutch pedal position switch
An open in the wire between the ECM
and the clutch pedal position switch
A wire shorted to ground between the
ECM and the clutch pedal position
switch
Poor ground G401
Transmission
range switch
signal (A/T
model) Shift lever in D and S SHIFT/CLUTCH SW
should indicate ON in P,
R,andN,andOFFinD
and S. Faulty transmission range switch
An open in the wire between the PCM
and the transmission range switch
A wire shorted to ground between the
PCM and the transmission range switch
Poor ground G101
Cruise control
main switch
signal Cruise control main
switch pressed and
released CRUISE MASTER
(MAIN) SW should
indicate ON when the
cruise control main
buttonispressedand
OFF when the cruise
control main button is
released. Faulty cruise control combination switch
Faulty gauge control module (tach)
An open in the wire between the gauge
control module (tach) and the cruise
control combination switch
A wire shorted to ground between the
gauge control module (tach) and the
cruise control combination switch
Poor ground G504
(cont’d)
08/08/21 14:10:50 61SNR030_040_0048
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5-23
B
A
6x1.0mm
10 N·m
(1.0 kgf·m, 7.2 lbf·ft) A
B A
B
C
6x1.0mm
10 N·m
(1.0 kgf·m, 7.2 lbf·ft)
C
56. Install the ECM/PCM (A), then install the ECM/PCM
cover (B).
57. Connect the battery cables (A) to the under-hood fuse/relay box.
58. Install the harness clamp (B). 59. Install the pipe (A).
60. Connect the connector (B), and install the harness
clamps (C).
61. Install the under cowl-panel (see step 4 on page 20-164).
62. Install the air cleaner assembly (see page 11-345).
63. Install the front wheels.
64. Do the battery installation procedure (see page 22-69).
65. Inspect for fuel leaks. Turn the ignition switch to ON (II) (do not operate the starter) so the fuel pump
runs for about 2 seconds and pressurizes the fuel
line. Repeat this operation three times, then check
for fuel leakage at any point in the fuel line.
66. Refill the engine with engine oil (see step 4 on page 8-10).
(cont’d)
08/08/21 14:21:01 61SNR030_050_0023
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