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DI37T–03

DI–14

–DIAGNOSTICS ENGINE

2000 CELICA (RM744U)

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*

Memory

P0100

(DI–23)

Mass Air Flow Circuit Malfunc-

tion

S Open or short in mass air flow meter circuit

S Mass air flow meter

S ECM

f f

P0101

(DI–27)

Mass Air Flow Circuit Range/

Performance Problem

S Mass air flow meter f f

P0110

(DI–28)

Intake Air Temp. Circuit Malfunc-

tion

S Open or short in intake air temp. sensor circuit

S Intake air temp. sensor (built into mass air flow meter)

S ECM

f f

P0115

(DI–33)

Engine Coolant Temp. Circuit

Malfunction

S Open or short in engine coolant temp. sensor circuit

S Engine coolant temp. sensor

S ECM

f f

P0116

(DI–37)

Engine Coolant Temp. Circuit

Range/Performance Problem

S Cooling system

S Engine coolant temp. sensor

f f

P0120

(DI–38)

Throttle/Pedal Position Sensor/

Switch ”A” Circuit Malfunction

S Open or short in throttle position sensor circuit

S Throttle position sensor

S ECM

f f

P0121

(DI–43)

Throttle/Pedal Position Sensor/

Switch ”A” Circuit Range/Perfor-

mance Problem

S Throttle position sensor

S ECM

f f

P0125

(DI–44)

Insufficient Coolant Temp. for

Closed Loop Fuel Control

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

S Fuel pressure

S Injector

S Gas leakage on exhaust system

S ECM

f f

P0130

(DI–49)

Heated Oxygen Sensor Circuit

Malfunction (Bank 1 Sensor 1)

(Except Calif.)

S Open or short in heated oxygen sensor circuit

S Heated oxygen sensor

S Air induction system

S EGR system

S Fuel pressure

S Injector

S ECM

f f

P0133

(DI–53)

Oxygen Sensor Circuit Slow Re-

sponse (Bank 1 Sensor 1)

S Open or short in heated oxygen sensor circuit

S Heated oxygen sensor

S Air induction system

S EGR system

S Fuel pressure

S Injector

S ECM

f f

P0135

(DI–56)

Oxygen Sensor Heater Circuit

Malfunction (Bank 1 Sensor 1)

S Open or short in heater circuit of heated oxygen sensor

S Heated oxygen sensor heater

S ECM

f f

Summary of content (5 pages)

PAGE 1
DI–14 DIAGNOSTICS – ENGINE DI37T–03 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 respective ’’DTC No.’’ in the DTC chart. SAE CONTROLLED: DTC No.
PAGE 2
DI–15 DIAGNOSTICS – ENGINE P0136 (DI–58) Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2) S Open or short in heated oxygen sensor circuit S Heated oxygen sensor f f P0141 (DI–56) Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2) S Same as DTC No. P0135 f f System too Lean (Fuel Trim) S Air induction system S Injector blockage S Mass air flow meter S Engine coolant temp.
PAGE 3
DI–16 DIAGNOSTICS P0440 (DI–81) P0441 (DI–87) – ENGINE Evaporative Emission Control System Malfunction 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 disconnected S Fuel tank cracked, hole or damaged 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 Ev
PAGE 4
DI–17 DIAGNOSTICS – ENGINE MANUFACTURER CONTROLLED: DTC No. (See Page) MIL*1 Memory Igniter Circuit Malfunction (No.1) S Ignition system S Open or short in IGF1 and IGT1 circuit from No.1 ignition coil with igniter to ECM S No.1 ignition coil with igniter S ECM f f Igniter Circuit Malfunction (No.2) S Ignition system S Open or short in IGF2 and IGT2 circuit from No.2 ignition coil with igniter to ECM S No.2 ignition coil with igniter S ECM f f Igniter Circuit Malfunction (No.
PAGE 5
DI–18 DIAGNOSTICS – ENGINE P1693*2 (DI–143) OCV Close Malfunction (for VVT–L) S Open or short in OCV circuit S OCV for VVT–L S ECM f f P1780*3 (DI–145) Park/Neutral Position Switch Malfunction S Short in park/neutral position switch circuit S Park/neutral position switch S ECM f f *1: f @@@ MIL lights up *2: 2ZZ–GE only *3: A/T only 2000 CELICA (RM744U)