Valve adjustment ACURA CSX 2006 Service Repair Manual


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Emission Group Identification Test Group and Evaporative Family
K20Z2 engine Model:
Example:
’06 Model
’07 Model
’08 Model
’09 Model Test Group:
a. Model Year
b. Manufacturer Subcode c. Family Type
d. Displacement Group e. Sequence Characters
Evaporative Family:
a. Model Year
b. Manufacturer Subcode c. Family Type
d. Canister Working Capacity Group e. Sequence Characters
1-9
Under-hood Emission Control Label
TO EVAP
CA N IS TE R
EVAP CANISTER
PURGE V ALVE
VERS
RE SE R VO I R
EVAP
VA LVE DE PURGE
D U PR ES E RV O I R EV A P
PC V V A L V E
SOUPAPE RGC
FRONT
AV ANT
THIS V EHICLE CONFORMS TO U.S. EPA TIER 2 BIN 5
REGULATIONS APPLICABLE TO 2006 MODEL YEAR
NEW PASSENGER CARS AND CALIFORNIA APPLICA BLE
TO 2 006 MODEL Y EAR NEW LEV IILEV PASS ENGER C ARS .
TWC, A/F SENSOR, HO2S, EGR, SFI
CE VEH ICU LE EST CONFORME A UX LOIS EPA TIER 2 DES ETA TS-UNIS
APPLICA BLES POUR LES VEHICULES DE BIN 5 POUR LES NOUV ELLES VEHICULES
VO ITURES D E TOURISME D’ A NNEE MO DELE 2006 ET A UX LOIS DE LA CA LIFORNIE
APPLICA BLES POUR LES NOUV EA UX VEHICU LES LEVII LEV VOITURES DE TOURISME
D’ ANN EE MOD ELE 2006. TWC, A/F SENSOR, HO2S, EGR, SFI
VALVE LASH
(COL D)
NO OTHER ADJUSTMENTS NEEDED. IN
EX
: 0.23 0.02 mm
: 0.30 0.02 mm
J EU D ES SOUP APES (MOUTEUR FROID)
AUCUN AUTRE REGLACE NECESSAIRE. ADM
ECM
: 0.23 0.02 mm
: 0.30 0.02 mm
VEHICLE EMISSION CONTROL INFORMATION
INFORMATIONS-DISPOSITIFS ANTI-POLLUTION
INFORMATION
HOND A MOTOR CO. , LTD.
HOND A MOTOR CO. , LTD.
RR A-C 00
MORMES S UR LES EMIS SIONS D’ECHAPPEMENT : LEVII, LEV (ACCREDITATION ET EN SERVICE)
: TIER 2-BIN 5 (ACCREDITATION ET EN SERVICE)
EPA ARBZN
6 6
THE FACTO RY INSTALLED LONG LIFE COOLANT MUST BE REPLA CED ACCORDING TO
MAINTENA NCE MINDER SUB COD E 5, OR AT 1 0 YEA RS WHICHEVER COMES FIEST.
THEREAFTER EVERY 5 YEARS.
WHEN ADD IN G OR REPL ACING TH E COOLA NT, A LWAYS USE ACURA RECOMMENDED
GENUINE L ONG-L IF E ANTI FREEZE / COOL ANT TYPE 2. THIS COOLA NT IS PRE MIX ED WITH
50% DISTILLED WA TER. IT D OES NOT REQUIRE A NY ADDITIONA L MIXING.
NEV ER DILUTE THE COO LANT, OR TH E LIFE OF THE ENGINE MAY BE SERIOUSL Y SHORTENED.
CH EC K O R A DD T HE C O O LAN T A T TH E RE SE RV E TAN K, N O T T HE R ADI AT O R.
FOR F URTHER INFORMATION ON THE COOLING SYSTEM, READ THE OWNER’S MA NUAL OR
CHECK WITH YOUR ACURA DEALER.
LORS D E L’APPOINT OU DE REMPLACEMENT DU LIQUID E DE REFROID ISSEMENT.
TOUJOURS UTILISER L’ANTIGEL /L IQUIDE D E REFRO IDISSEMENT TYPE 2 LONGUE D UREE
ACURA D’ORIGINE RECOMMENDE CE LIQUIDE DE REFROIDISSEMENT EST MELANGE A U
PREALABLE AV EC 50 % D’EA U DISTILLEE. IL N’EX IGE A UCUN MEL ANGE ADD ITIONNEL .
NE JAMA IS D IL UER LE L IQUIDE D E REFROIDISSEMENT, LA DUREE D E VIE DU MOTEUR
POURRAIT EN ETRE A FFECTEE. LE LIQUIDE D E REFROIDISSEMENT L ONGUE DUREE INSTAL LE A L ’USINE DOIT ETRE
RENLA CE CONFORMEMENT AU CODE SECONDAIRE 5 DE L ’A ID E-MEMOIRE D’ENTRETIEN
OU A PRES 10 ANS, SELON LA PREMIERE EVENTUA LITE.PU IS TOUS LES 5 ANS.
CONTROLER L ES NIV EAUX ET FA IRE L’APPOIN T A U V ASE D ’EXPAN SIO N. J AMA IS AU RAD IATEUR.
POUR TOUTE INFORMATION COMPLEMENTAIRE SUR LE CIRCUIT DE REFROIDISSEMENT, SE
REFERER A U MANUEL D’UTILISATEUR OU PRENDRE CONTACT AVEC UN CONCESSIONNAIRE ACURA.
6HNXV02. 4FKC6HNXR0106BBA
2.0L
6HNXV0 2. 4F A6 6HN XR 010 6BBA
ACCREDITATION OBD II 2.0LOBD II CERTIFIED
EXHAUST EMISSIONS STANDARDS : L EVII, LEV (CERTIFICATION AND IN-USE)
: TIER 2-BIN 5 (CERTIFICATION AND IN-USE)
EPA
ARB
T HIS SPARK IGNIT ION SYSTEM
CO M PLIES W ITH CANADIAN ICES 0 02 .
CE SYSTEME D’ALLUMAGE PAR
ALANORMENMB 002DUCANADA.ETINCELLE DE VEHICULE ES T CONFORMERENSEIGNEMENTS
108
’06-07 Models
’08-09 Models
TH E FA CTORY INSTA LLED LONG -LIFE COO LA NT MUST BE REPLACED A CCORDING TO
MAINTENA NCE MINDER SUB CODE 5, OR A T 10 YEARS WHICHEVER COMES FIEST.
TH ER EA FT ER E VE RY 5 YE AR S .
W HEN A DDIN G O R REPLACING TH E CO OLANT, A LWA YS USE H onda RECOMMENDED
G ENUIN E LON G-LIFE AN TI-FREEZE / COO LA NT TYPE 2. THIS COO LA NT IS PRE-MIX ED WITH
50% D ISTILLED WATER. IT DO ES N OT REQUIRE ANY AD DITION AL MIX ING.
NEV ER D ILU TE TH E CO OLANT, OR THE LIFE OF THE EN GINE MAY BE SERIOUSLY SH ORTENED .
C HE CK OR AD D TH E COO LA NT AT T HE R ES ER V E TAN K, NOT T HE R ADIA TO R.
FOR FURTH ER INFORMATION ON TH E COO LING SYSTEM, READ TH E OWNER’S MANUA L OR
CHECK WITH YOUR H onda D EA LER.
LORS DE L’APPOIN T OU DU REMPLACEMENT D U LIQUID E DE REFRO IDISSEMENT.
TOUJOURS UTILISER L’AN TIGEL /LIQU IDE DE REFROIDISSEMEN T TYPE 2 LON GUE DU REE
H onda D ’ORIG IN E RECO MMAND E CE LIQUID E DE REFRO IDISSEMENT EST MELANGE A U
PREALABLE AVEC 50 % D’EA U DISTILLEE. IL N’EX IGE AU CUN MELA NGE A DDITIONNEL.
NE JAMA IS DILUER LE LIQU ID E DE REFROIDISSEMEN T, LA D UREE DE V IE DU MOTEUR
P OUR RA IT EN ET RE A FFE CT EE . LE LIQUID E DE REFROIDISSEMEN T LON GUE DU REE INSTALLE A L’U SINE D OIT ETRE
RENLACE CO NFORMEMEN T AU CO DE SECOND AIRE 5 DE L’AID E-MEMOIRE D’ENTRETIEN
OU APRES 10 ANS, SELON LA PREMIERE EVENTU ALITE.PUIS TOUS LES 5 ANS.
CONTROLER LES NIVEA UX ET FAIRE L’APPOINT AU VASE D ’EXPANSION. JAMA IS AU RAD IA TEUR.
POUR TOUTE INFORMATION COMPLEMENTAIRE SUR LE CIRCUIT DE REFROID ISSEMENT, SE
REFERER AU MANU EL D’UTILISA TEUR OU PREND RE CONTA CT AVEC UN CONCESSIONNAIRE Honda.INFORMATION
RENSEIGNEMENTS VEHICLE EMISSION CONTROL INFORMATION
INFORMATIONS-DISPOSITIFS ANTI-POLLUTION
RRA-C02
U. S. EPA : T2B5 LDV OBD : CA OBD I I
OBD : CA OBD I I FUEL : GASOLINE
ARB : LEV I I LEV PC FUEL : GASOLINE
TWC, A/F SENSOR, HO2S, EGR, SFI
8HNXV02. 4FKC 8HNXR0106BBY 2. 0L
CONFORMS TO REGULATIONS :
2008MY
LOIS EPA : T2B5 LDV OBD : CA OBD I I
OBD : CA OBD I I CARBURANT : ESSENCE
ARB : LEV I I LEV PC CARBURANT : ESSENCE
TWC, A/F SENSOR, HO2S, EGR, SFI
8HNXV02. 4FKC 8HNXR0106BBY 2. 0L
CONFORME AUX NORMES : D’ ANNEE MODELE 2008
T HIS SPA RK IGNITI ON SY ST EM COMP LIES W ITH CA NADIAN ICE S-00 2.
CE SYSTEME D’ A LLUMAGE PAR ETINCELLE DE VEH ICULE EST CONFORME A LA NORME NMB-002 DU CANAD A.
HNX
902.0 V VA9
HNX
90106 RVEA
ab c d e
ab c d e
THIS VEHICLE CONFORMS TO U.S. EPA TIER 2 BIN 5
REGULATIONS APPLICABLE TO 2006 MODEL YEAR
NEW PASSENGER CARS AND CALIFORNIA
REGULATIONS APPLICABLE TO 2006 MODEL YEAR
NEW LEV II LEV PASSENGER CARS.
THIS VEHICLE CONFORMS TO U.S. EPA TIER 2 BIN 5
REGULATIONS APPLICABLE TO 2007 MODEL YEAR
NEW PASSENGER CARS AND CALIFORNIA
REGULATIONS APPLICABLE TO 2007 MODEL YEAR
NEW LEV II LEV PASSENGER CARS.
CONFORMS TO REGULATIONS: 2008 MY
CONFORMS TO REGULATIONS: 2009 MY 6: ’06
7: ’07
8: ’08
9: ’09
HNX: HONDA
V: LDV
FKC: ’06 model, ’08 model
HKC: ’07 model
VA9: ’09 model
6: ’06
7: ’07
8: ’08
9: ’09
HNX: HONDA
R: EVAP/ORVR
BBA: ’06 model
BBY: ’07 model, ’08 model
VEA: ’09 model
08/08/21 14:06:02 61SNR030_010_0009
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(#')Symbol Maintenance Main Items
3-7
Maintenance Main Items
If the message ‘‘SERVICE’’ does not appear more than 12 months after the display is reset, change the engine oil every
year.
NOTE:


 Replace the brake fluid every 3 years independent of the maintenance messages in the information display.
Inspect idle speed every 160,000 miles (256,000 km).
Adjust the valves during services A, B, 1, 2 or 3, only if they are noisy.

















A Replace engine oil (see page 8-10).
Engine oil capacity without oil filter:
K20Z2: 4.0 L (4.2 US qt)
K20Z3: 4.2 L (4.4 US qt)
B Replace engine oil and oil filter (see page 8-11). Engine oil capacity with oil filter:
K20Z2: 4.2 L (4.4 US qt)
K20Z3: 4.4 L (4.6 US qt)
Check front and rear brakes (see page 19-3). Check pad and disc for wear (thickness), damage, and cracks.
Check calipers for damage, leaks, and tightness of mounting bolts.
Check parking brake adjustment (see page 19-7). Check the number of clicks (8 to 10) when the parking brake lever is pulled with 196 N (20 kgf,
44 lbf) of force.
Inspect tie-rod ends, steering gearbox, and gearbox boots (see page 17-5). Check steering linkage.
Check boots for damage and leaking grease.
Check fluid lines for damage and leaks.
Inspect suspension components (see page 18-3). Check bolts for tightness.
Check condition of ball joint boots for deterioration and damage.
Inspect driveshaft boots (see page 16-4). Check boots for cracks and boot bands for tightness.
Inspect brake hoses and lines including VSA lines (see page 19-37). Check the master cylinder and VSA modulator-control unit for damage or leakage.
Inspect all fluid levels and condition of fluids. Engine coolant (see page 10-7)
Automatic transmission fluid (ATF-Z1) (see page 14-231)
Manual transmission fluid (MTF)
5M/T (see page 13-5), 6M/T (see page 13-82)
Clutch fluid (see page 12-7)
Brake fluid (see page 19-9)
Windshield washer fluid (see page 22-234)
Inspect exhaust system: K20Z2 (see page 9-13), K20Z3 (see page 9-14)
Check catalytic converter heat shields, exhaust pipes, and muffler for damage, leaks, and tightness.
Inspect fuel lines (see page 11-326) and connections (see page 11-328). Check for loose connections, cra cks, and deterioration; retighten loose connections and replace
damaged parts.
NOTE: According to state and federal regulations, failure to do the maintenance items marked with an asterisk ( ) will
not void the client’s emissions warranties. However, Acura recommends that all maintenance services be done at the
recommended interval, to ensure long-term reliability.
08/08/21 14:08:32 61SNR030_030_0007
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Engine Mechanical
Cylinder Head
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Special Tools
. 6-2
Component Location Index . 6-3
Engine Compression Inspection . 6-7
VTEC Rocker Arm Test . 6-8
VTC Actuator Inspection . 6-11
Valve Clearance Adjustment . 6-12
Crankshaft Pulley Removal and Installation . 6-16
Cam Chain Removal . 6-18
Cam Chain Installation . 6-21
Auto-tensioner Removal and Installation . 6-29
Chain Case Oil Seal Installation . 6-31
Cam Chain Inspection . 6-32
CKP Pulse Plate Replacement . 6-34
Cylinder Head Cover Removal . 6-36
Cylinder Head Cover Installation . 6-37
Cylinder Head Removal . 6-38
CMP Pulse Plate A Replacement . 6-41
CMP Pulse Plate B Replacement . 6-41
VTC Actuator, Exhaust Camshaft Sprocket Replacement . 6-42
Cylinder Head Inspection for Warpage . 6-43
Rocker Arm Assembly Removal . 6-43
Rocker Arm and Shaft Disassembly/Reassembly . 6-46
Rocker Arm and Shaft Inspection . 6-48
Camshaft Inspection . 6-50
Valve, Spring, and Valve Seal Removal . 6-54
Valve Inspection . 6-55
Valve Stem-to-Guide Clearance Inspection . 6-55
Valve Guide Replacement . 6-56
Valve Seat Reconditioning . 6-58
Valve, Spring, and Valve Seal Installation . 6-59
Rocker Arm Assembly Installation . 6-60
Cylinder Head Installation . 6-62
Sealing Bolt Installation . 6-66
08/08/21 14:26:12 61SNR030_060_0001
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Special Tools Required
Valve Clearance
Intake: 0.21 0.25 mm (0.008 0.010 in.)
Exhaust: 0.28 0.32 mm (0.011 0.013 in.)
K20Z2 engine
6-12Cylinder Head
Valve Clearance Adjustment
A
B
C No. 1
No. 2
No. 3No. 4
No. 1 No. 2 No. 3 No. 4
EXHAUST
INTAKE
AB
 Locknut wrench 07MAA-PR70120
 Adjuster 07MAA-PR70110
NOTE: Connector the Honda Diagnostic System (HDS)
to the data link connector (DLC) (see step 2 on page
11-3), and monitor the engine coolant temperature
(ECT) sensor 1 with the HDS. Adjust the valve clearance
only when the engine coolant temperature is less than
38 °C (100 °F). 1. Remove the cylinder head cover (see page 6-36).
2. Set the No. 1 piston at top dead center (TDC). The punch mark (A) on the variable valve timing control
(VTC) actuator and the punch mark (B) on the
exhaust camshaft sprocket should be at the top.
Align the TDC marks (C) on the VTC actuator and
the exhaust camshaft sprocket. 3. Select the correct feeler gauge for the valve
clearance you are going to check.
4. Insert the feeler gauge (A) between the adjusting screw (B) and the end of the valve stem, then slide
it back and forth, you should feel a slight amount of
drag.
08/08/21 14:26:30 61SNR030_060_0012
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Specified Torque
Intake:
7x0.75mm
20 N·m (2.0 kgf·m, 14 lbf·ft)
Apply new engine oil to the nut threads.
Exhaust:
7x0.75mm
14 N·m (1.4 kgf·m, 10 lbf·ft)
Apply new engine oil to the nut threads.
6-13
07MAA-PR70110
07MAA-PR70120
5. If you feel too much or too little drag, loosen the locknut with the locknut wrench and the adjuster,
andturntheadjustingscrewuntilthedragonthe
feeler gauge is correct.
6. Tighten the locknut to the specified torque, and recheck the clearance. Repeat the adjustment if
necessary. 7. Rotate the crankshaft 180 ° clockwise (camshaft
pulley turns 90 °).
8. Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.
9. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
10. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.
(cont’d)
08/08/21 14:26:30 61SNR030_060_0013
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Special Tools Required
K20Z3 engine
6-146-14 Cylinder Head
Valve Clearance Adjustment (cont’d)
B
A
C
11. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
12. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.
13. Install the cylinder head cover (see page 6-37).  Locknut wrench 07MAA-PR70120
 Adjuster 07MAA-PR70110
NOTE: Connect the Honda Diagnostic System (HDS) to
the data link connector (DLC) (see step 2 on page 11-3),
and monitor the engine coolant temperature (ECT)
sensor 1 with the HDS. Adjust the valve clearance only
when the engine coolant temperature is less than 38 °C
(100 °F).
1. Remove the cylinder head cover (see page 6-36).
2. Set the No. 1 piston at top dead center (TDC). The punch mark (A) on the variable valve timing control
(VTC) actuator and the punch mark (B) on the
exhaust camshaft sprocket should be at the top.
Align the TDC marks (C) on the VTC actuator and
the exhaust camshaft sprocket.
08/08/21 14:26:31 61SNR030_060_0014
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Valve Clearance
Intake: 0.21 0.25 mm (0.008 0.010 in.)
Exhaust: 0.25 0.29 mm (0.010 0.011 in.)
Specified Torque
7x0.75mm
20 N·m (2.0 kgf·m, 14 lbf·ft)
Apply new engine oil to the nut threads.
6-15
No. 1No. 2 No. 3 No. 4
No. 1 No. 2
No. 3 No. 4
EXHAUST
INTAKE
AB 07MAA-PR70110
07MAA-PR70120
3. Select the correct feeler gauge for the valve clearance you are going to check.
4. Insert the feeler gauge (A) between the adjusting screw (B) and the end of the valve stem, then slide
it back and forth, you should feel a slight amount of
drag. 5. If you feel too much or too little drag, loosen the
locknut with the locknut wrench and the adjuster,
andturntheadjustingscrewuntilthedragonthe
feeler gauge is correct.
6. Tighten the locknut to specified torque, and recheck the clearance. Repeat the adjustment if necessary.
7. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
8. Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.
(cont’d)
08/08/21 14:26:31 61SNR030_060_0015
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(#'



 ) Special Tools Required
Removal
6-166-16 Cylinder Head
Valve Clearance Adjustment
(cont’d)
Crankshaft Pulley Removal and
Installation
A
07JAB-001020A B
07NAB-001040A
C
07JAA-001020A
(or commercially
available)
9. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
10. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.
11. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
12. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.
13. Install the cylinder head cover (see page 6-37).  Holder handle 07JAB-001020A
 Holder Attachment, 50 mm 07NAB-001040A
 Socket, 19 mm 07JAA-001020A or a commercially
available19mmsocket
1. Remove the right front wheels.
2. Remove the splash shield (see step 25 on page 5-5).
3. Remove the drive belt (see page 4-31).
4. Hold the crankshaft pulley with holder handle (A) and holder attachment (B).
5. Remove the bolt with a socket, 19 mm (C) and a breaker bar, then remove the crankshaft pulley.
08/08/21 14:26:32 61SNR030_060_0016
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(#'



 ) Special Tools Required
Removal
6-166-16 Cylinder Head
Valve Clearance Adjustment
(cont’d)
Crankshaft Pulley Removal and
Installation
A
07JAB-001020A B
07NAB-001040A
C
07JAA-001020A
(or commercially
available)
9. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
10. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.
11. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
12. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.
13. Install the cylinder head cover (see page 6-37).  Holder handle 07JAB-001020A
 Holder Attachment, 50 mm 07NAB-001040A
 Socket, 19 mm 07JAA-001020A or a commercially
available19mmsocket
1. Remove the right front wheels.
2. Remove the splash shield (see step 25 on page 5-5).
3. Remove the drive belt (see page 4-31).
4. Hold the crankshaft pulley with holder handle (A) and holder attachment (B).
5. Remove the bolt with a socket, 19 mm (C) and a breaker bar, then remove the crankshaft pulley.
08/08/21 14:26:32 61SNR030_060_0016
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Symptom Diagnostic procedure Also check for
11-13
Symptom Troubleshooting Index
When the vehicle has one of these symptoms, check for a diagnostic trouble code (DTC) with the HDS. If there is no
DTC, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.












Engine will not start
(MIL works OK, no DTCs set)
1.
2.
3.
4.Test the battery (see page 22-67).
Test the starter (see page 4-9).
Check the fuel pressure (see page 11-325).
Troubleshoot the fuel pump circuit (see page 11-
318).Low compression
No ignition spark
Intake air leaks
Locked up engine
Broken cam chain
Fuel contamination
Engine will not start
(MIL comes on and stays on,
no DTCs set) Troubleshoot the DLC circuit (see page 11-204).
MIL comes on and stays on,
or never comes on at all, no
DTCs set Troubleshoot the MIL circuit (see page 11-203).
Engine will not start
(MIL works OK, no DTCs set,
immobilizer indicator stays
on or flashes) Check the immobilizer system (see page 22-321).
Engine starts but stalls
immediately
(MIL works OK, no DTCs set,
immobilizer indicator stays
on or flashes) Check the immobilizer system (see page 22-323).
Engine is hard to start
(MIL works OK, no DTCs set) 1.
2.
3.Test the battery (see page 22-67).
Check the fuel pressure (see page 11-325).
Clean the throttle body (see page 11-
344).Low compression
Intake air leaks
Fuel contamination
Weak spark
Cold fast idle too low
(MIL works OK, no DTCs set) 1.
2.
3.DotheECM/PCMidlelearnprocedure(seepage
11-310).
Check the idle speed (see page 11-309).
Clean the throttle body (see page 11-
344).
Cold fast idle too high
(MIL works OK, no DTCs set) 1.
2.
3.DotheECM/PCMidlelearnprocedure(seepage
11-310).
Check the idle speed (see page 11-309).
Do the throttle position learning check (see page
11-343). Intake air leaks
Idle speed fluctuates
(MIL works OK, no DTCs set) 1.
2.
3.
4.DotheECM/PCMidlelearnprocedure(seepage
11-310).
Check the idle speed (see page 11-309).
Do the carbon accumulation check (see page 11-343).
Troubleshoot the A/C signal circuit (see page 11-306). Incorrect valve
timing or clearance
adjustment
Intake air leaks
After warming up, idle speed
is below specification without
load
(MIL works OK, no DTCs set) 1.
2.
Troubleshoot the alternator FR signal circuit
(see page 11-307).
Do the carbon accumulation check (see page 11-343). Incorrect valve
timing or clearance
adjustment
After warming up, idle speed
is above specification without
load
(MIL works OK, no DTCs set) 1.
2.
Troubleshoot the alternator FR signal circuit
(see page 11-307).
Inspect the APP sensor (see page 11-268). Intake air leaks
(cont’d)
08/08/21 14:12:36 61SNR030_110_0013
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