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Î
How to Troubleshoot Circuits at the ECM/
PCM Connectors
11-6 Fuel and Emissions Systems
General Troubleshooting Information (cont’d)
A
D E
B
A
C A
B D
C
A
NOTE: The ECM/PCM overwrites data and monitors the
EVAP system for about 30 minutes after the ignition
switch is turned to LOCK (0) or ACC (I). Jumping the
SCS line after turning the ignition switch to LOCK (0) or
ACC (I) cancels this function. Disconnecting the ECM/
PCM during this function, without jumping the SCS line
first, can damage the ECM/PCM.
1. Make sure the ignition switch is turned to LOCK (0), then jump the SCS line with the HDS.
2. Remove the cover (A).
3. Lift up the under-hood fuse/relay box (D).
4. Remove the coolant reservoir (E). Disconnect ECM/ PCM connectors A, B, and C, and probe the
terminals from the terminal side of the connectors.
NOTE: ECM/PCM connectors A, B, and C have
symbols (A= , B= , C= ) embosed on them for
identification. 5. When diagnosis/troubleshooting is done at the
ECM/PCM connector, use the terminal test port (A)
above the terminal you need to check.
6. Connect one side of the patch cord’s terminals (A) to a commercially available digital multimeter (B),
and connect the other side cord’s terminals (C) to a
commercially available banana jack (Pomona
Electronics Tool No. 3563 or equivalent) (D).
7. Gently contact the pin probe (male) at the terminal test port from the terminal side. Do not force the
tips into the terminals.
For accurate results, always use the pin probe (male).
To prevent damage to the c onnector
terminals, do not insert test equipment
probes, paper clips, or other substitutes as
they can damage the terminals. Damaged
terminals cause a poor connection and an
incorrect measurement.
Do not puncture the insulation on a wire. Punctures can cause poor or intermittent
electrical connections.
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Substituting the ECM/PCM
Special Tools Required
11-7
AA
D
9.8 N·m
(1.0 kgf·m,
7.2 lbf·ft)
A
B
C
E
Honda diagnostic system (HDS) tablet tester
Honda interface module (HIM) and an iN workstation with the latest HDS software version
HDS pocket tester
GNA600 and an iN workstation with the latest HDS software version
Any one of the above updating tools can be used.
NOTE: Use this procedure when you need to substitute
a known-good ECM/PCM during troubleshooting
procedures.
1. Connect the HDS to the data link connector (DLC) (A) located under the driver’s side of the dashboard.
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the ECM/ PCM and other vehicle systems. If it doesn’t, go to
the DLC circuit troubleshooting (see page 11-204). If
you are returning from DLC circuit troubleshooting,
skip step 4 and 5, and clean the throttle body after
substituting the ECM/PCM (see page 11-344).
4. Select the INSPECTION MENU with the HDS.
5. Select the ETCS TEST, then select the TP POSITION CHECK, and follow the screen prompts.
NOTE: If the TP POSITION CHECK indicates FAILED,
continue this procedure. 6. Turn the ignition switch to LOCK (0).
7. Jump the SCS line with the HDS.
8. Do the battery removal procedure (see page 22-69).
9. Remove the cover (A).
10. Remove the bolts (D), then remove the ECM/PCM (E).
11. Disconnect ECM/PCM connectors A, B, and C. NOTE: ECM/PCM connectors A, B, and C have
symbols (A= , B= , C= ) embossed on them for
identification.
12. Install the parts in the reverse order of removal.
(cont’d)
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OBD Status
11-8Fuel and Emissions Systems
General Troubleshooting Information (cont’d)
13. Do the battery installation procedure (see page
22-69).
14. Turn the ignition switch to ON (II). NOTE: DTC P0630 VIN Not Programmed or
Mismatch may be stored because the VIN has not
been programmed into the ECM/PCM; ignore it,
and continue this procedure.
15. Manually input the VIN to the ECM/PCM with the HDS.
16. Select the IMMOBI SYSTEM with the HDS.
17. Enter the immobilizer code that you got from the iN, or use the ECM/PCM replacement procedure in the
HDS; this allows you to start the engine.
18. Reset the ECM/PCM with the HDS.
19. If the TP POSITION CHECK failed in step 5, clean the throttle body (see page 11- 344).
20. Update the ECM/PCM if it does not have the latest software (see page 11-227).
21. Do the ECM/PCM idle learn procedure (see page 11-310).
22. Do the CKP pattern clear/CKP pattern learn procedure. The OBD status shows the current system status of
each DTC and all of the parameters. This function is
used to see if the repair was successfully completed.
The results of diagnostic tests for the DTC are displayed
as:
PASSED: The on board diagnosis is successfully finished.
FAILED: The on board diagnosis has finished but failed.
EXECUTING: The vehicle is in enable criteria conditions for the DTC and the on board diagnosis is
running.
NOT COMPLETED: The on board diagnosis was running but is out of the enable conditions of the DTC.
OUT OF CONDITION: The vehicle has stayed out of the enable conditions for the DTC.
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(#')
DTC
(MIL indication ) Two Drive Cycle
Detection Detection Item MIL Note
11-9
DTC Troubleshooting Index
P0010 (56)
Variable Valve Timing Control (VTC) Oil Control Solenoid Valve
Malfunction ON (see page 11-274)
P0011 (56) Variable Valve Timing Control (VTC) System Malfunction ON (see page 11-276)
P0101 (50) Mass Air Flow (MAF) Sensor Circuit Range/Performance Problem ON (see page 11-74)
P0102 (50) Mass Air Flow (MAF) Sensor Circuit Low Voltage ON (see page 11-75)
P0103 (50) Mass Air Flow (MAF) Sensor Circuit High Voltage ON (see page 11-78)
P0107 (3) Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage ON (see page 11-80)
P0108 (3) Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage ON (see page 11-82)
P0111 (10) Intake Air Temperature (IAT) Sensor Circuit Range/Performance
Problem ON (see page 11-85)
P0112 (10) Intake Air Temperature (IAT) Sensor Circuit Low Voltage ON (see page 11-86)
P0113 (10) Intake Air Temperature (IAT) Sensor Circuit High Voltage ON (see page 11-87)
P0116 (86) Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/
Performance Problem ON (see page 11-90)
P0117 (6) Engine Coolant Temperature (ECT) Sensor 1 Circuit Low Voltage ON (see page 11-91)
P0118 (6) Engine Coolant Temperature (ECT) Sensor 1 Circuit High Voltage ON (see page 11-92)
P0122 (7) Throttle Position (TP) Sensor A Circuit Low Voltage ON (see page 11-232)
P0123 (7) Throttle Position (TP) Sensor A Circuit High Voltage ON (see page 11-234)
P0125 (86) Engine Coolant Temperature (ECT) Sensor 1 Malfunction/Slow
Responce ON (see page 11-95)
P0128 (87) Cooling System Malfunction ON (see page 11-96)
P0133 (61) Air Fuel Ratio (A/F) Sensor (Sensor 1) Malfunction/Slow Response ON (see page 11-97)
P0134 (41) Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Malfunction ON (see page 11-98)
P0135 (41) Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater Circuit Malfunction ON (see page 11-99)
P0137 (63) Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2))
Circuit Low Voltage ON (see page 11-104)
P0138 (63) Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2))
Circuit High Voltage ON (see page 11-106)
P0139 (63) Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2))
Slow Response ON (see page 11-109)
P0141 (65) Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2))
Heater Circuit Malfunction ON (see page 11-110)
P0171 (45) Fuel System Too Lean ON (see page 11-113)
P0172 (45) Fuel System Too Rich ON (see page 11-113)
P0222 (7) Throttle Position (TP) Sensor B Circuit Low Voltage ON (see page 11-236)
P0223 (7) Throttle Position (TP) Sensor B Circuit High Voltage ON (see page 11-239)
P0300 (75)
and any
combination of
the following:
P0301 (71)
P0302 (72)
P0303 (73)
P0304 (74) Random Misfire Detected
ON (see page 11-115)
P0301 (71) No. 1 Cylinder Misfire Detected ON (see page 11-118)
P0302 (72) No. 2 Cylinder Misfire Detected ON (see page 11-118)
P0303 (73) No. 3 Cylinder Misfire Detected ON (see page 11-118)
P0304 (74) No. 4 Cylinder Misfire Detected ON (see page 11-118)
NOTE: The above DTCs are indicated when the PGM-FI system is selected with the HDS.
Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T system, and check for automatic transmission DTCs.
: These DTCs are indicated by a blinking MIL when the SCS line is jumped with the HDS.
4: K20Z2 engine
5: K20Z3 engine
(cont’d)
4
5 4
5
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DTC
(MIL indication ) Two Drive Cycle
Detection Detection Item MIL Note
11-10Fuel and Emissions Systems
DTC Troubleshooting Index (cont’d)
P0325 (23)
Knock Sensor Circuit Malfunction ON (see page 11-126)
P0335 (4) Crankshaft Position (CKP) Sensor No Signal ON (see page 11-128)
P0339 (4) Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption ON (see page 11-131)
P0340 (57) Camshaft Position (CMP) Sensor A No Signal ON (see page 11-278)
P0341 (57) Camshaft Position (CMP) Sensor A and Crankshaft Position (CKP)
Sensor Incorrect Phase Detected ON (see page 11-281)
P0344 (57) Camshaft Position (CMP) Sensor A Circuit Intermittent Interruption ON (see page 11-282)
P0365 (8) Camshaft Position (CMP) Sensor B No Signal ON (see page 11-132)
P0369 (8) Camshaft Position (CMP) Sensor B Circuit Intermittent Interruption ON (see page 11-134)
P0401 (80) Exhaust Gas Recirculation (EGR) Insufficient Flow ON (see page 11-357)
P0404 (12) Exhaust Gas Recirculation (EGR) Valve Circuit Range/Performance
Problem ON (see page 11-358)
P0406 (12) Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit High
Voltage ON (see page 11-361)
P0420 (67) Catalyst System Efficiency Below Threshold ON (see page 11-353)
P0443 (92) Evaporative Emission (EVAP) Canister Purge Valve Circuit
Malfunction ON (see page 11-375)
P0451 (91) Fuel Tank Pressure (FTP) Sensor Circuit Range/Performance Problem ON (see page 11-379)
P0452 (91) Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage ON (see page 11-380)
P0453 (91) Fuel Tank Pressure (FTP) Sensor Circuit High Voltage ON (see page 11-383)
P0455 (90) Evaporative Emission (EVAP) System Large Leak Detected ON (see page 11-386)
P0456 (90) Evaporative Emission (EVAP) System Very Small Leak Detected ON (see page 11-386)
P0457 (90) Evaporative Emission (EVAP) System Leak Detected/Fuel Fill Cap
Loose or Missing ON (see page 11-390)
P0457 (90) Evaporative Emission (EVAP) System Leak Detected/Fuel Fill Cap
Loose or Missing OFF (see page 11-390)
P0461 (121) Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Range/
Performance Problem OFF (see page 11-313)
P0462 (121) Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage OFF (see page 11-313)
P0463 (121) Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage OFF (see page 11-315)
P0496 (92) Evaporative Emission (EVAP) System High Purge Flow Detected ON (see page 11-391)
P0497 (90) Evaporative Emission (EVAP) System Low Purge Flow Detected ON (see page 11-392)
P0497 (90) Evaporative Emission (EVAP) System Low Purge Flow Detected ON (see page 11-395)
P0498 (117) Evaporative Emission (EVAP) Canister Vent Shut Valve Circuit Low
Voltage ON (see page 11-398)
P0499 (117) Evaporative Emission (EVAP) Canister Vent Shut Valve Circuit High
Voltage ON (see page 11-401)
P0506 (14) Idle Control System RPM Lower Than Expected ON (see page 11-298)
P0507 (14) Idle Control System RPM Higher Than Expected ON (see page 11-300)
P050A (167) Cold Start Idle Air Control System Performance Problem ON (see page 11-135)
P050B (167) Cold Start Ignition Timing Control System Performance Problem ON (see page 11-137)
P0532 (191) A/C Pressure Sensor Circuit Low Voltage OFF (see page 11-301)
P0533 (191) A/C Pressure Sensor Circuit High Voltage OFF (see page 11-303)
P0562 (34) Charging System Low Voltage OFF (see page 11-140)
P0563 (34) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Power Source Circuit Unexpected Voltage OFF (see page 11-141)
P0602 (196) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Programming Error ON (see page 11-144)
P0603 (131) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Internal Control Module Keep Alive Memory (KAM) Error ON (see page 11-144)
NOTE: The above DTCs are indicated when the PGM-FI system is selected with the HDS.
Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T system, and check for automatic transmission DTCs.
: These DTCs are indicated by a blinking MIL when the SCS line is jumped with the HDS.
4: K20Z2 engine
5: K20Z3 engine
6: ’06 model
7: ’07-09 models
8: ’06-08 models
4
4
4
6
7 6
7
4
5
4
5
8
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DTC
(MIL indication ) Two Drive Cycle
Detection Detection Item MIL Note
11-11
P0606 (0)
Engine Control Module (ECM)/Powertrain Control Module (PCM)
Processor Malfunction ON (see page 11-145)
P060A (131) Powertrain Control Module (PCM) (A/T System) Internal Control
Module Malfunction ON (see page 11-145)
P062F (131) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Internal Control Module Keep Alive Memory (KAM) Error ON (see page 11-144)
P0630 (139) VIN Not Programmed or Mismatch ON (see page 11-146)
P0685 (135) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Power Control Circuit/Internal Circuit Malfunction ON (see page 11-147)
P0720 (122) Output Shaft (Countershaft) Speed Sensor Circuit Malfunction ON (see page 11-148)
P0720 (122) Output Shaft (Countershaft) Speed Sensor Circuit Malfunction ON (see page 11-149)
P1009 (56) Variable Valve Timing Control (VTC) Advance Malfunction ON (see page 11-283)
P1109 (13) Barometric Pressure (BARO) Sensor Circuit Out of Range High ON (see page 11-152)
P1116 (86) Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/
Performance Problem ON (see page 11-153)
P1128 (5) Manifold Absolute Pressure (MAP) Sensor Signal Lower Than
Expected ON (see page 11-155)
P1129 (5) Manifold Absolute Pressure (MAP) Sensor Signal Higher Than
Expected ON (see page 11-156)
P1157 (48) Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS Circuit High Voltage ON (see page 11-157)
P1172 (61) Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit Out of Range High ON (see page 11-159)
P1297 (20) Electrical Load Detector (ELD) Circuit Low Voltage OFF (see page 11-160)
P1298 (20) Electrical Load Detector (ELD) Circuit High Voltage OFF (see page 11-162)
P1454 (91) Fuel Tank Pressure (FTP) Sensor Circuit Range/Performance Problem ON (see page 11-402)
P145C (90) Evaporative Emission (EVAP) System Purge Flow Malfunction ON (see page 11-404)
P1549 (34) Charging System High Voltage OFF (see page 11-164)
P1658 (40) Electronic Throttle Control System (ETCS) Control Relay ON
Malfunction ON (see page 11-241)
P1659 (40) Electronic Throttle Control System (ETCS) Control Relay OFF
Malfunction ON (see page 11-243)
P1683 (40) Throttle Valve Default Position Spring Performance Problem ON (see page 11-247)
P1684 (40) Throttle Valve Return Spring Performance Problem ON (see page 11-248)
P16BB (116) Alternator B Terminal Circuit Low Voltage OFF (see page 11-165)
P16BC (116) Alternator FR Terminal Circuit/IGP Circuit Low Voltage OFF (see page 11-166)
P2101 (40) Electronic Throttle Control System (ETCS) Malfunction ON (see page 11-249)
P2118 (40) Throttle Actuator Current Range/Performance Problem ON (see page 11-251)
P2122 (37) Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP)
Sensor D) Circuit Low Voltage ON (see page 11-253)
P2123 (37) Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP)
Sensor D) Circuit High Voltage ON (see page 11-256)
P2127 (37) Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP)
Sensor E) Circuit Low Voltage ON (see page 11-257)
P2128 (37) Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP)
Sensor E) Circuit High Voltage ON (see page 11-260)
P2135 (7) Throttle Position (TP) Sensor A/B Incorrect Voltage Correlation ON (see page 11-262)
P2138 (37) Accelerator Pedal Position (APP) Sensor A/B (Throttle Position (TP)
Sensor D/E) Incorrect Voltage Correlation ON (see page 11-264)
P2176 (40) Throttle Actuator Control System Idle Position Not Learned ON (see page 11-266)
P2183 (192) Engine Coolant Temperature (ECT) Sensor 2 Circuit Range/
Performance Problem ON (see page 11-168)
P2184 (192) Engine Coolant Temperature (ECT) Sensor 2 Circuit Low Voltage ON (see page 11-170)
P2185 (192) Engine Coolant Temperature (ECT) Sensor 2 Circuit High Voltage ON (see page 11-172)
P2195 (48) Air Fuel Ratio (A/F) Sensor (Sensor 1) Signal Stuck Lean ON (see page 11-174)
NOTE: The above DTCs are indicated when the PGM-FI system is selected with the HDS.
Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T system, and check for automatic transmission DTCs.
: These DTCs are indicated by a blinking MIL when the SCS line is jumped with the HDS.
1: A/T
2: The D indicator and the MIL may come on at the same time (A/T).
3: M/T
4: K20Z2 engine
5: K20Z3 engine
9: ’09 model
(cont’d)
1
9
1, 2
3
4
5
5
3
1
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DTC
(MIL indication ) Two Drive Cycle
Detection Detection Item MIL Note
11-12Fuel and Emissions Systems
DTC Troubleshooting Index (cont’d)
P2227 (13)
Barometric Pressure (BARO) Sensor Circuit Range/Performance
Problem ON (see page 11-176)
P2228 (13) Barometric Pressure (BARO) Sensor Circuit Low Voltage ON (see page 11-177)
P2229 (13) Barometric Pressure (BARO) Sensor Circuit High Voltage ON (see page 11-177)
P2238 (48) Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS Circuit Low Voltage ON (see page 11-178)
P2252 (48) Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS Circuit Low Voltage ON (see page 11-179)
P2270 (63) Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2))
Circuit Signal Stuck Lean ON (see page 11-181)
P2271 (63) Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2))
Circuit Signal Stuck Rich ON (see page 11-181)
P2413 (12) Exhaust Gas Recirculation (EGR) System Malfunction ON (see page 11-363)
P2422 (117) Evaporative Emission (EVAP) Canister Vent Shut Valve Stuck Closed
Malfunction ON (see page 11-402)
P2610 (132) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Ignition Off Internal Timer Malfunction ON (see page 11-182)
P2646 (22) Rocker Arm Oil Pressure Switch Circuit Low Voltage ON (see page 11-284)
P2647 (22) Rocker Arm Oil Pressure Switch Circuit High Voltage ON (see page 11-287)
P2648 (21) Rocker Arm Oil Control Solenoid Circuit Low Voltage ON (see page 11-289)
P2649 (21) Rocker Arm Oil Control Solenoid Circuit High Voltage ON (see page 11-291)
P2A00 (61) Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit Range/Performance
Problem ON (see page 11-182)
U0028 (126) F-CAN Malfunction (BUS-OFF (Engine Control Module (ECM)/
Powertrain Control Module (PCM))) ON (see page 11-183)
U0122 (126) F-CAN Malfunction (Engine Control Module (ECM)/Powertrain
Control Module (PCM)-Vehicle Stability Assist (VSA) Modulator-
Control Unit) OFF (see page 11-184)
U0131 (126) F-CAN Malfunction (Engine Control Module (ECM)/Powertrain
Control Module (PCM)-Electrical Power Steering (EPS) Control Unit) OFF (see page 11-186)
U0155 (126) F-CAN Malfunction (Engine Control Module (ECM)/Powertrain
Control Module (PCM)-Gauge Control Module) ON (see page 11-188)
U0300 (131) PGM-FI System and A/T System Program Version Mismatch ON (see page 11-190)
NOTE: The above DTCs are indicated when the PGM-FI system is selected with the HDS.
Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T system, and check for automatic transmission DTCs.
: These DTCs are indicated by a blinking MIL when the SCS line is jumped with the HDS.
1: A/T
4: K20Z2 engine
6: with VSA
4
6
1
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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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