2006 ACURA CSX check engine

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Number Maintenance Sub Items
3-8
Maintenance Minder
Maintenance Sub Items
1 Rotate tires, and check tire inflation and condition.
Follow the pattern shown in the Owner’s Manual.


2 Replace air cleaner element (see page 11-346).
Replace every 15,000 miles (24,000 km) if the vehicle is driven in dusty conditions.
Replace dust and pollen filter (see page 21-75). If the vehicle is driven mostly in urban areas that have high concentrations of dust, pollen, or soot in
the air, replace every 15,000 miles (24,000 km).
Replace the filter whenever airflow from the heating and air c onditioning system is less than normal.
Inspect drive belt (see page 4-30). Look for cracks and damage, then check the position of the drive belt auto-tensioner indicator.
3 Replace automatic transmission fluid (see page 14-232). Capacity:2.9L(3.1USqt);useAcuraATF-Z1.
Replace manual transmission fluid. 5M/T (see page 13-5), 6M/T (see page 13-82)
Capacity:1.5L(1.6USqt);useAcuraMTF.




4 Replace spark plugs (see page 4-21).
K20Z2: Use SKJ20DR-M11 (DENSO).
K20Z3: Use SK22PR-M11S (DENSO).
Inspect valve clearance (cold). K20Z2 (see page 6-12)
Intake: 0.21 0.25 mm (0.008 0.010 in.), Exhaust: 0.28 0.32 mm (0.011 0.013 in.)
K20Z3 (see page 6-14)
Intake: 0.21 0.25 mm (0.008 0.010 in.), Exhaust: 0.25 0.29 mm (0.010 0.011 in.)


5 Replace engine coolant (see page 10-8).
Capacity (including the reservoir):
K20Z2: M/T 4.3 L (1.14 US gal), A/T 4.2 L (1.11 US gal)
K20Z3: 4.5 L (1.19 US gal)
Use Honda Long Life Antifreeze/Coolant Type 2.
08/08/21 14:08:32 61SNR030_030_0008
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Symptom Diagnostic procedure Also check for
4-4
Starting System
Symptom Troubleshooting Index


Engine does not start
(does not crank)
1.
2.
3.
4.
5.
6.
7.Check for loose battery terminals or connections.
Test the battery for a low state of charge (see page
22-67).
Check the starter (see page 4-6).
Check the starter cut relay (see page 22-70).
Check the clutch interlock switch (M/T model) (see page
4-8).
Check the transmission range switch (A/T model)
(see page 14-265).
Check the ignition switch or wire (see page 22-72). Poor ground at G101
(A/T model) or G401
(M/T model)
Engine cranks, but does
not start 1.
2.
3.
4.
5.
6.
7.
8.
9.Check for PGM-FI DTCs (see page 11-3).
Check for IMMOBI status and function (see page
22-325).
Check the fuel pressure (see page 11-325).
Check for a plugged or damaged fuel line (see page
11-326).
Check for a plugged fuel filter (see page 11-337).
Check the throttle body (see page 11-
343).
Check for low engine compression (see page 6-7).
Check for a damage or broken cam chain (see page
6-21).
Do the engine control module (ECM)/powertrain control
module (PCM) reset in the PGM-FI INSPECTION menu
to cancel the ALL INJECTORS STOP with the Honda
Diagnostic System (HDS). Empty fuel tank
Weak or fouled spark
plugs
Engine is hard to start 1. 2.
3.
4.Check for PGM-FI DTCs (see page 11-3).
Check the fuel pressure (see page 11-325).
Check for a plugged or damaged fuel line (see page
11-326).
Check for a plugged fuel filter (see page 11-337). Weak or fouled spark
plugs
Engine cranks slowly 1. 2.
3.
4.Check for loose battery terminals or connections.
Test the battery for a low state of charge (see page
22-67).
Check the starter for binding (see page 4-13).
Check for excessive drag in the engine.
08/08/21 14:09:21 61SNR030_040_0005
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Special Tools Required
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4-6Starting System
Starter System Circuit Troubleshooting
OTC3131
Alternator, Regulator, Battery & Starter tester OTC3131
Available through the Honda Canada Inc. Technical
Tools Department; FAX
866-398-8665/e-mail:
ch_technicaltools ch.honda.com
NOTE:  Air temperature must be within 15 38 °C (59 100 °F) during this procedure.
 After this inspection, you must reset the engine control module (ECM)/powertrain control module
(PCM). Otherwise, the ECM/PCM will continue to stop
the fuel injectors from operating.
 The battery must be in good condition and fully charged.
1. Connect the alternator, regulator, battery & starter tester (OTC3131) to the battery as shown.
NOTE: The probe is not used for battery testing.
2. Do the BATTERY TEST. ThebatteryisOK.Gotostep3.
If the display indicates BAD BATTERY, replace
the battery, then retest. If the display indicates
CHARGE & RETEST, charge the battery, then retest. 3. Connect the Honda Diagnostic System (HDS) to the
data link connector (DLC) (see step 2 on page 11-3).
4. Turn the ignition switch to ON (II).
5. 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).
6. Select ALL INJECTORS STOP in the PGM-FI INSPECTION menu with the HDS.
7. Set the parking brake, then with the shift lever in N or P (A/T model) or the clutch pedal pressed (M/T
model), turn the ignition switch to START (III).
The starting system is OK. Go to step 14.
Go to step 8.
8. Turn the ignition switch to LOCK (0).
9. Check the electrical connections at the battery, the negative battery cable to the body, the engine
ground cables, and the starter for looseness and
corrosion. Then try cranking the engine again.
Repairing the loose connection corrected the
problem. The starting system is OK. Go to step 14.
Based on the following symptoms, take the
appropriate action:
 If the starter does not crank the engine at all, go to step 10.
 If the starter cranks the engine erratically or too slowly,gotostep12.
 If the starter does not disengage from the flywheel ring gear (M/T model) or torque
converter ring gear (A/T model) when you
release the key, replace the starter, or remove
and disassemble it, and check for the following:
– Starter solenoid and switch malfunction
– Dirty drive gear or damaged overrunning clutch
Does the display indicate GOOD or GOOD, LOWCHARGE? Does t he st ar t er cr ank t he engi ne nor mal l y ?
Does t he st ar t er cr ank t he engi ne nor mal l y ?
08/08/21 14:09:22 61SNR030_040_0007
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4-7
A
B
10. Make sure the shift lever is in N or P (A/T model) orneutral (M/T model), then disconnect the engine
wire harness 1P connector (A). Connect a jumper
wire from the battery positive terminal to the
starter subharness 1P connector (B).
Go to step 11.
Check the starter subharness. If the wire is OK,
remove the starter (see page 4-10), then repair or
replace (see page 4-13) it as necessary. 11. Check the following items in the order listed until
you find the problem circuit:
NOTE: After the open circuit or high resistance in
the circuit is found and repaired, go to step 14.
 Check for an open or short in the YEL wire and connectors between the driver’s under-dash
fuse/relay box and the ignition switch.
 Check for an open or short in the RED wire and connectors between the under-dash fuse/relay
box and the engine wire harness 1P connector.
 Check for an open or short in the ORN wire and connectors between the under-dash fuse/relay
box and the clutch interlock switch (M/T model).
 Check for an open or short in the ORN wire, BLU/ WHT wire and connectors between the under-
dash fuse/relay box and the transmission range
switch (A/T model).
 Check for poor ground at G401 (M/T model) or G101 (A/T model).
 Check for a faulty ignition switch (see page 22-72).
 Check for a faulty clutch interlock switch (M/T model) (see page 4-8).
 Check for a faulty transmission range switch (A/T model) (see page 14-265).
 Check for a faulty starter cut relay (see page 22-70).
(cont’d)
Does the starter crank the engine?
08/08/21 14:09:22 61SNR030_040_0008
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M/T model
4-84-8 Starting System
Starter System Circuit
Troubleshooting (cont’d)
Clutch Interlock Switch Test
OTC3131 A
B
Terminal
Position
Clutch Interlock Switch
Clutch Interlock Switch 2
1
(PRESSED)
(RELEASED)
12. Do the STARTING TEST with the alternator, regulator battery & starter tester.
NOTE: The probe is used for starter testing.
Go to step 13.
Replace the starter, or remove and
disassemble it, and check for these problems:
 Draginthestarterarmature
 Short in the armature winding
 Excessive drag in the engine
 Open circuit in starter armature commutator segments
 Excessively worn starter brushes
 Open circuit in the starter brushes
 Dirty or damaged helical splines or drive gear
 Faulty overrunning clutch
13. Remove the starter, and inspect its drive gear and the flywheel ring gear (M/T model) or the torque
converter ring gear (A/T model) for damage.
Replace any damaged parts.
14. Select ECM/PCM reset (see page 11-4) in the PGM- FI INSPECTION menu to cancel ALL INJECTORS
STOP with the HDS. 1. Disconnect the clutch interlock switch 2P connector
(A).
2. Remove the clutch interlock switch (B).
3. Check for continuity between the terminals accordingtothetable.
 If the continuity is not as specified, replace the clutch interlock switch (see page 12-8).
 If OK, install the clutch interlock switch, and adjust the pedal height (see page 12-8).
Terminal side of
male terminals
Does the display indicate cranking voltage greatert han or equal t o 8.5 V and t he cur r ent d r aw l esst han or equal t o 380 A?
08/08/21 14:09:23 61SNR030_040_0009
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Ignition Timing
M/T model: 8 ° 2 ° BTDC (RED mark (B)) at
idle in neutral
A/T model: 8 ° 2 ° BTDC (RED mark (B)) at idle in N or P
4-20Ignition System
Ignition Timing Inspection
A
B
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. Start the engine. Hold the engine speed at 3,000 rpm with no load (in N or P (A/T model) or
neutral (M/T model)) until the radiator fan comes
on, then let it idle.
6. Check the idle speed (see page 11-309).
7. Jump the SCS line with the HDS.
8. Connect the timing light to the service loop (white tape). 9. Aim the light toward the pointer (A) on the cam
chain case. Check the ignition timing under a no
load condition (headlights, blower fan, rear window
defogger, and air conditioner are turned off).
10. If the ignition timing differs from the specification, check the cam timing. If the cam timing is OK,
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
system work properly, and the ECM/PCM was
substituted, replace the original ECM/PCM
(see page 11-228).
11. Disconnect the HDS and the timing light.
08/08/21 14:10:07 61SNR030_040_0021
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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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Special Tools Required
YES
NO YES
NO
4-28
Charging System
Alternator and Regulator Circuit Troubleshooting
OTC3131
Alternator, Regulator, Battery & Starter tester OTC3131
Available through the Honda Canada Inc. Technical
Tools Department; FAX
866-398-8665/e-mail:
ch_technicaltools ch.honda.com
1. Make sure the battery connections are good and the battery is sufficiently charged.
2. Connect the alternator, regulator, battery & starter tester (OTC3131) to the battery as shown.
3. Start the engine. Hold the engine speed at 3,000 rpm with no load (in N or P (A/T model) or
neutral (M/T model)) until the radiator fan comes
on, then let it idle.
4. Do the CHARGING SYSTEM TEST.
Go to step 5.
If the voltage is less than 13.5 V, go to
alternator control circuit troubleshooting (see page
4-29). If the voltage is over 15.1 V and amperage is
less than 87.5 A, replace the alternator (see page
4-34) or repair the alternator (see page 4-38). 5. Check the diode condition on the display.
The diode is OK. Troubleshooting is
complete.
If the display indicates BAD, replace the
alternator (see page 4-34) or repair the alternator
(see page 4-38), then retest.
NOTE: If the display indicates N/A, the diode
pattern could not be diagnosed. Repeat the test
again. If test is complete, use multimeter to
perform further pinpoint testing, then retest.
Does the display indicate the voltage is within 13.5 15 .1 V t he amper age i s 87 .5 A or mor e? Does t he d i spl ay i nd i cat e GOOD?
08/08/21 14:10:11 61SNR030_040_0029
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