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DI-14
                                                   DIAGNOSTICS         -   ENGINE
                                                                                                                                  DI6UT-04


DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may not be exactly the same as your reading due to the type of instrument
or other factors.
If a malfunction code is displayed during the DTC check in check mode, check the circuit for that code listed
in the table below. For details of each code, turn to the page referred to under the ''See page '' for the respec-
tive ''DTC No.'' in the DTC chart.
SAE CONTROLLED:
   DTC No.             Detection Item                                          Trouble Area                             MIL*1   Memory
                                                  S Open or short in mass air flow meter circuit
    P0100     Mass Air Flow Circuit Malfunc-
                                                  S Mass air flow meter                                                  f        f
   (DI-22 )   tion
                                                  S ECM
    P0101     Mass Air Flow Circuit Range/
                                                  S Mass air flow meter                                                  f        f
   (DI-26 )   Performance Problem

                                                  S Open or short in intake air temp. sensor circuit
    P0110     Intake Air Temp. Circuit Malfunc-
                                                  S Intake air temp. sensor (built into mass air flow meter)             f        f
   (DI-27 )   tion
                                                  S ECM
                                                  S Open or short in engine coolant temp. sensor circuit
    P0115     Engine Coolant Temp. Circuit
                                                  S Engine coolant temp. sensor                                          f        f
   (DI-32 )   Malfunction
                                                  S ECM
    P0116     Engine Coolant Temp. Circuit        S Cooling system
                                                                                                                         f        f
   (DI-36 )   Range/Performance Problem           S Engine coolant temp. sensor
                                                  S Open or short in throttle position sensor circuit
    P0120     Throttle/Pedal Position Sensor/
                                                  S Throttle position sensor                                             f        f
   (DI-37 )   Switch "A" Circuit Malfunction
                                                  S ECM
              Throttle/Pedal Position Sensor/
    P0121                                         S Throttle position sensor
              Switch "A" Circuit Range/Perfor-                                                                           f        f
   (DI-42 )                                       S ECM
              mance Problem
                                                  S Open or short in heated oxygen sensor (bank 1 sensor 1)
                                                    circuit
                                                  S Heated oxygen sensor (bank 1 sensor 1)
                                                  S Air induction system
    P0125     Insufficient Coolant Temp. for
                                                  S Fuel pressure                                                        f        f
   (DI-43 )   Closed Loop Fuel Control
                                                  S Injector
                                                  S Gas leakage on exhaust system
                                                  S ECM
                                                  S PCV piping
                                                  S Open or short in heated oxygen sensor circuit
                                                  S Heated oxygen sensor
              Heated Oxygen Sensor Circuit        S Air induction system
    P0130
              Malfunction (Bank 1 Sensor 1)       S EGR system                                                           f        f
   (DI-48 )
              (Except Calif.)                     S Fuel pressure
                                                  S Injector
                                                  S ECM
                                                  S Open or short in heated oxygen sensor circuit
                                                  S Heated oxygen sensor
                                                  S Air induction system
    P0133     Oxygen Sensor Circuit Slow Re-
                                                  S EGR system                                                           f        f
   (DI-52 )   sponse (Bank 1 Sensor 1)
                                                  S Fuel pressure
                                                  S Injector
                                                  S ECM




 2002 ECHO (RM884U)

                                                                                      Author :                 Date :                 184
                                                                                                                         DI-15
                                                DIAGNOSTICS         -   ENGINE


                                                S Open or short in heater circuit of heated oxygen sensor
   P0135     Oxygen Sensor Heater Circuit
                                                S Heated oxygen sensor heater                                        f   f
  (DI-55 )   Malfunction (Bank 1 Sensor 1)
                                                S ECM
   P0136     Oxygen Sensor Circuit Malfunc-     S Open or short in heated oxygen sensor circuit
                                                                                                                     f   f
  (DI-57 )   tion (Bank 1 Sensor 2)             S Heated oxygen sensor
   P0141     Oxygen Sensor Heater Circuit
                                                S Same as DTC No. P0135                                              f   f
  (DI-55 )   Malfunction (Bank 1 Sensor 2)

                                                S Air induction system
                                                S Injector blockage
                                                S Mass air flow meter
                                                S Engine coolant temp. sensor
   P0171                                        S Fuel pressure
             System too Lean (Fuel Trim)                                                                             f   f
  (DI-59 )                                      S Gas leakage on exhaust system
                                                S Open or short in heated oxygen sensor (bank 1 sensor 1)
                                                  circuit
                                                S Heated oxygen sensor (bank 1 sensor 1)
                                                S PCV piping
                                                S Open or short in engine wire
                                                S Connector connection
                                                S Vacuum hose connection
                                                S Ignition system
                                                S Injector
                                                S Fuel pressure
   P0300     Random/Multiple Cylinder Misfire   S EGR system
                                                                                                                     f   f
  (DI-63 )   Detected                           S Manifold absolute pressure sensor
                                                S Engine coolant temp. sensor
                                                S Compression pressure
                                                S Valve clearance
                                                S Valve timing
                                                S ECM
                                                S PCV piping

                                                S Open or short in engine wire
   P0301
             Cylinder 1 Misfire Detected        S Connector connection
  (DI-63 )
                                                S Vacuum hose connection
                                                S Ignition system
   P0302                                        S Injector
             Cylinder 2 Misfire Detected
  (DI-63 )                                      S Fuel pressure
                                                S EGR system
                                                                                                                     f   f
                                                S Manifold absolute pressure sensor
   P0303                                        S Engine coolant temp. sensor
             Cylinder 3 Misfire Detected
  (DI-63 )                                      S Compression pressure
                                                S Valve clearance
   P0304                                        S Valve timing
             Cylinder 4 Misfire Detected        S ECM
  (DI-63 )
                                                S PCV piping
                                                S Open or short in knock sensor 1 circuit
   P0325     Knock Sensor 1 Circuit Malfunc-
                                                S Knock sensor 1 (looseness)                                         f   f
  (DI-69 )   tion (Bank 1)
                                                S ECM
                                                S Open or short in crankshaft position sensor circuit
                                                S Crankshaft position sensor
   P0335     Crankshaft Position Sensor "A"
                                                S Signal plate (Timing belt guide)                                   f   f
  (DI-72 )   Circuit Malfunction
                                                S Crankshaft timing pulley
                                                S ECM




2002 ECHO (RM884U)

                                                                                 Author :                   Date :       185
DI-16
                                                 DIAGNOSTICS        -   ENGINE


                                                S Open or short in camshaft position sensor circuit
    P0340     Camshaft Position Sensor Cir-     S Camshaft position sensor
                                                                                                                    f   f
   (DI-75 )   cuit Malfunction                  S Camkshaft timing pulley
                                                S ECM

                                                S Gas leakage on exhaust system
    P0420     Catalyst System Efficiency Be-    S Open or short in heated oxygen sensor circuit
                                                                                                                    f   f
   (DI-77 )   low Threshold (Bank 1)            S Heated oxygen sensor
                                                S Three-way catalytic converter
                                                S Hose or tube cracked, hole, damaged or loose seal
                                                S Fuel tank cap incorrectly installed
                                                S Fuel tank cap cracked or damaged
                                                S Vacuum hose cracked, hole, blocked,damaged or discon-
                                                  nected
    P0440     Evaporative Emission Control
                                                S Fuel tank cracked, hole or damaged                                f   f
   (DI-80 )   System Malfunction
                                                S Charcoal canister cracked, hole or damaged
                                                S Open or short in vapor pressure sensor circuit
                                                S Vapor pressure sensor
                                                S Fuel tank over fill check valve cracked or damaged
                                                S ECM

                                                S Vacuum hose cracked, hole, blocked damaged or discon-
                                                  nected
    P0441     Evaporative Emission Control
                                                S Open or short in vapor pressure sensor circuit
   (DI-86 )   System Incorrect Purge Flow
                                                S Vapor pressure sensor
                                                S Open or short in VSV circuit for EVAP
                                                S VSV for EVAP                                                      f   f
                                                S Open or short in VSV circuit for vapor pressure sensor
    P0446     Evaporative Emission Control      S VSV for vapor pressure sensor
   (DI-86 )   System Vent Control Malfunction   S Charcoal canister cracked, hole or damaged
                                                S Fuel tank over fill check valve cracked or damaged
                                                S ECM
              Evaporative Emission Control
   P0450
              System Pressure Sensor Mal-
  (DI-101 )                                     S Open or short in vapor pressure sensor circuit
              function
                                                SVVapor pressure sensor                                             f   f
              Evaporative Emission Control
   P0451                                        S ECM
              System Pressure Sensor Range/
  (DI-101 )
              Performance
                                                S Combination meter
   P0500      Vehicle Speed Sensor Malfunc-     S Open or short in vehicle speed sensor circuit
                                                                                                                    f   f
  (DI-103 )   tion                              S Vehicle speed sensor
                                                S ECM

                                                S Open or short in IAC valve circuit
                                                S IAC valve is stuck or closed
   P0505                                        S Open or short in A/C switch circuit
              Idle Control System Malfunction                                                                       f   f
  (DI-106 )                                     S Air induction system
                                                S ECM
                                                S PCV piping

   P0550      Power Steering Pressure Sensor    S PS pressure sensor
                                                                                                                    f   f
  (DI-1 11)   Circuit Malfunction               S ECM

*1: f @@@ MIL lights up




2002 ECHO (RM884U)

                                                                                  Author :                 Date :           186
                                                                                                                                    DI-17
                                                   DIAGNOSTICS          -   ENGINE

MANUFACTURER CONTROLLED:
  DTC No.
                       Detection Item                                          Trouble Area                               MIL*1   Memory
 (See Page)
                                                   S Ignition system
                                                   S Open or short in IGF1 and IGT1 circuit from No.1 ignition coil
   P1300
              Igniter Circuit Malfunction (No.1)     with igniter to ECM                                                   f        f
  (DI-1 13)
                                                   S No.1 ignition coil with igniter
                                                   S ECM
                                                   S Ignition system
                                                   S Open or short in IGF2 and IGT2 circuit from No.2 ignition coil
   P1305
              Igniter Circuit Malfunction (No.2)     with igniter to ECM                                                   f        f
  (DI-1 13)
                                                   S No.2 ignition coil with igniter
                                                   S ECM
                                                   S Ignition system
                                                   S Open or short in IGF2 and IGT3 circuit from No.3 ignition coil
   P1310
              Igniter Circuit Malfunction (No.3)     with igniter to ECM                                                   f        f
  (DI-1 13)
                                                   S No.3 ignition coil with igniter
                                                   S ECM
                                                   S Ignition system
                                                   S Open or short in IGF1 and IGT4 circuit from No.4 ignition coil
   P1315
              Igniter Circuit Malfunction (No.4)     with igniter to ECM                                                   f        f
  (DI-1 13)
                                                   S No.4 ignition coil with igniter
                                                   S ECM
              VVT Sensor/Camshaft Position         S Open or short in VVT sensor circuit
   P1345
              Sensor Circuit Malfunction (Bank     S VVT sensor                                                            f        f
  (DI-1 19)
              1)                                   S ECM
              VVT Sensor/Camshaft Position         S Mechanical system (Jumping teeth of timing belt, belt
   P1346
              Sensor Circuit Range/Perfor-           stretched)                                                            f        f
  (DI-121 )
              mance Problem (Bank 1)               S ECM
                                                   S Valve timing
   P1349      VVT System Malfunction (Bank         S OCV
                                                                                                                           f        f
  (DI-122 )   1)                                   S VVT controller assembly
                                                   S ECM

                                                   S Short in stop light switch signal circuit
   P1520      Stop Light Switch Signal Mal-
                                                   S Stop light switch                                                     f        f
  (DI-129 )   function
                                                   S ECM
   P1600                                           S Open in back up power source circuit
              ECM BATT Malfunction                                                                                         f        f
  (DI-132 )                                        S ECM

                                                   S Open or short in OCV circuit
   P1656      OCV Circuit Malfunction (for
                                                   S OCV for VVT-i                                                         f        f
  (DI-134 )   VVT-i)
                                                   S ECM
                                                   S Short in park/neutral position switch circuit
  P1780*2     Park/Neutral Position Switch
                                                   S Park/neutral position switch                                          f        f
  (DI-137 )   Malfunction
                                                   S ECM
*1: f @@@ MIL lights up
*2: A/T only




2002 ECHO (RM884U)

                                                                                      Author :                   Date :              187



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