Table of Contents
Advertisement
6-2 ENGINE GENERAL INFORMATION AND DIAGNOSIS
ENGINE DIAGNOSIS ......................................... 6-6
GENERAL DESCRIPTION ............................. 6-6
ON-BOARD DIAGNOSTIC SYSTEM
(VEHICLE WITH IMMOBILIZER INDICATOR
LAMP) ............................................................. 6-7
ON-BOARD DIAGNOSTIC SYSTEM
(VEHICLE WITHOUT IMMOBILIZER
INDICATOR LAMP) ...................................... 6-10
PRECAUTION IN DIAGNOSING
TROUBLE ..................................................... 6-11
ENGINE DIAGNOSTIC FLOW TABLE ......... 6-12
CUSTOMER PROBLEM INSPECTION
FORM (EXAMPLE) ................................... 6-14
MALFUNCTION INDICATOR LAMP (MIL)
CHECK...................................................... 6-15
DIAGNOSTIC TROUBLE CODE (DTC)
CHECK...................................................... 6-15
DIAGNOSTIC TROUBLE CODE (DTC)
CLEARANCE ............................................ 6-16
DIAGNOSTIC TROUBLE CODE (DTC)
TABLE....................................................... 6-17
FAIL-SAFE TABLE.................................... 6-20
VISUAL INSPECTION .............................. 6-22
ENGINE BASIC INSPECTION.................. 6-23
ENGINE DIAGNOSIS TABLE ................... 6-26
SCAN TOOL DATA....................................... 6-31
INSPECTION OF ECM AND ITS
CIRCUITS ..................................................... 6-36
ECM VOLTAGE VALUES TABLE............. 6-37
TERMINAL RESISTANCE TABLE............ 6-43
COMPONENT LOCATION ........................... 6-45
TABLE A-1 MALFUNCTION INDICATOR
LAMP CIRCUIT CHECK - LAMP DOES NOT
COME "ON" AT IGNITION SWITCH ON
(BUT ENGINE AT STOP) ............................. 6-46
TABLE A-2 MALFUNCTION INDICATOR
LAMP CIRCUIT CHECK - LAMP REMAINS
"ON" AFTER ENGINE STARTS ................... 6-47
TABLE A-3 MIL CHECK - MIL FLASHES
AT IGNITION SWITCH ON (VEHICLE
WITHOUT IMMOBILIZER INDICATOR
LAMP) ........................................................... 6-48
TABLE A-4 MIL CHECK - MIL DOES NOT
FLASH OR JUST REMAINS ON EVEN
WITH GROUNDING DIAGNOSIS SWITCH
TERMINAL (VEHICLE WITHOUT
IMMOBILIZER INDICATOR LAMP).............. 6-48
TABLE A-5 ECM POWER AND GROUND
CIRCUIT CHECK - MIL DOESN'T LIGHT
AT IGNITION SWITCH ON AND ENGINE
DOESN'T START THOUGH IT IS
CRANKED UP .............................................. 6-49
DTC P0105 (DTC NO.11) MANIFOLD
ABSOLUTE PRESSURE (MAP) CIRCUIT
MALFUNCTION ............................................ 6-52
DTC P0110 (DTC NO.18) INTAKE AIR
TEMP. (IAT) CIRCUIT MALFUNCTION ....... 6-55
DTC P0115 (DTC NO.19) ENGINE
COOLANT TEMPERATURE (ECT) CIRCUIT
MALFUNCTION ............................................ 6-57
DTC P0120 (DTC NO.13) THROTTLE
POSITION CIRCUIT MALFUNCTION ...........6-60
DTC P0121 THROTTLE POSITION CIRCUIT
RANGE/PERFORMANCE PROBLEM ..........6-63
DTC P0130 (DTC NO.14) HEATED OXYGEN
SENSOR (HO2S) CIRCUIT MALFUNCTION
(SENSOR-1) ..................................................6-66
DTC P0133 HEATED OXYGEN SENSOR
(HO2S) CIRCUIT SLOW RESPONSE
(SENSOR-1) ..................................................6-68
DTC P0134 HEATED OXYGEN SENSOR
(HO2S) CIRCUIT NO ACTIVITY DETECTED
(SENSOR-1) ..................................................6-69
DTC P0135 (DTC NO.14) HEATED OXYGEN
SENSOR (HO2S) HEATER CIRCUIT
MALFUNCTION (SENSOR-1) .......................6-70
DTC P0136 HEATED OXYGEN SENSOR
(HO2S) CIRCUIT MALFUNCTION
(SENSOR-2) ..................................................6-72
DTC P0141 HEATED OXYGEN SENSOR
(HO2S) HEATER CIRCUIT MALFUNCTION
(SENSOR-2) ..................................................6-74
DTC P0171 FUEL SYSTEM TOO LEAN .......6-76
DTC P0172 FUEL SYSTEM TOO RICH .......6-76
DTC P0300 RANDOM MISFIRE DETECTED
(MISFIRE DETECTED AT 2 OR MORE
CYLINDERS) .................................................6-81
DTC P0301 CYLINDER 1 MISFIRE
DETECTED ...................................................6-81
DTC P0302 CYLINDER 2 MISFIRE
DETECTED ...................................................6-81
DTC P0303 CYLINDER 3 MISFIRE
DETECTED ...................................................6-81
DTC P0304 CYLINDER 4 MISFIRE
DETECTED ...................................................6-81
DTC P0325 (DTC NO.17) KNOCK SENSOR
CIRCUIT MALFUNCTION .............................6-86
DTC P0335 (DTC NO.23) CRANKSHAFT
POSITION (CKP) SENSOR CIRCUIT
MALFUNCTION.............................................6-88
DTC P0340 (DTC NO.15) CAMSHAFT
POSITION (CMP) SENSOR CIRCUIT
MALFUNCTION.............................................6-91
DTC P0400 EXHAUST GAS
RECIRCULATION FLOW MALFUNCTION ...6-94
DTC P0420 CATALYST SYSTEM
EFFICIENCY BELOW THRESHOLD ............6-97
DTC P0443 PURGE CONTROL VALVE
CIRCUIT MALFUNCTION ...........................6-100
DTC P0480 RADIATOR COOLING FAN
CONTROL SYSTEM MALFUNCTION ........6-101
DTC P0500 (DTC NO.16) VEHICLE SPEED
SENSOR (VSS) MALFUNCTION ................6-103
DTC P0505 (DTC NO.26) IDLE CONTROL
SYSTEM MALFUNCTION ...........................6-105
DTC P1450 BAROMETRIC PRESSURE
SENSOR LOW/HIGH INPUT.......................6-108
DTC P1451 BAROMETRIC PRESSURE
SENSOR PERFORMANCE PROBLEM ......6-108
Advertisement
Table of Contents
