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DI-13
DIAGNOSTICS - ENGINE (5VZ-FE)
DI0RM-16
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 the codes 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
(See page)
S Open or short in mass air flow meter circuit
P0100 Mass Air Flow Circuit Malfunc-
S Mass air flow meter f f
(DI-21 ) tion
S ECM
P0101 Mass Air Flow Circuit Range/
S Mass air flow meter f f
(DI-25 ) 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-26 ) 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-30 ) Malfunction
S ECM
P0116 Engine Coolant Temp. Circuit S Cooling system
f f
(DI-34 ) 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-36 ) Switch "A" Circuit Malfunction
S ECM
Throttle/Pedal Position Sensor/
P0121
Switch "A" Circuit Range/Perfor- S Throttle position sensor f f
(DI-41 )
mance Problem
S Open or short in A/F sensor (bank 1 sensor 1) circuit
S A/F sensor (bank 1 sensor 1)
S Air induction system
P0125 Insufficient Coolant Temp. for S Fuel pressure
f f
(DI-42 ) Closed Loop Fuel Control S Injector
S Gas leakage on exhaust system
S PCV valve and hose
S ECM
S Thermostat
P0128 S Cooling system
Thermostat Malfunction f f
(DI-47 ) S Engine Coolant temp. sensor
S ECM
P0136 Oxygen Sensor Circuit Malfunc- S Open or short in heated oxygen sensor circuit
f f
(DI-48 ) tion (Bank 1 Sensor 2) S Heated oxygen sensor
P0141 Oxygen Sensor Heater Circuit
S Same as DTC No. P0135 f f
(DI-50 ) Malfunction (Bank 1 Sensor 2)
2002 4RUNNER (RM887U)
Author : Date : 189
DI-14
DIAGNOSTICS - ENGINE (5VZ-FE)
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-52 ) S Gas leakage on exhaust system
S Open or short in A/F sensor (bank 1 sensor 1) circuit
S A/F sensor (bank 1 sensor 1)
S PCV valve and hose
S ECM
S Injector leak, blockage
S Mass air flow meter
S Engine coolant temp. sensor
S Ignition system
P0172
System too Rich (Fuel Trim) S Fuel pressure f f
(DI-52 )
S Gas leakage on exhaust system
S Open or short in A/F sensor (bank 1 sensor 1) circuit
S A/F sensor (bank 1 sensor 1)
S ECM
P0300 Random/Multiple Cylinder Misfire
(DI-57 ) Detected
S Open or short in engine wire
P0301 S Connector connection
Cylinder 1 Misfire Detected
(DI-57 ) S Vacuum hose connector
P0302 S Ignition system
Cylinder 2 Misfire Detected
(DI-57 ) S Injector
S Fuel pressure
P0303
Cylinder 3 Misfire Detected S Mass air flow meter f*2 f
(DI-57 )
S Engine coolant temp sensor
temp.
P0304 S Compression pressure
Cylinder 4 Misfire Detected
(DI-57 ) S Valve clearance
P0305 S Valve timing
Cylinder 5 Misfire Detected
(DI-57 ) S PCV valve and hose
S ECM
P0306
Cylinder 6 Misfire Detected
(DI-57 )
S Open or short in knock sensor 1 circuit
P0325 Knock Sensor 1 Circuit Malfunc-
S Knock sensor 1 (looseness) f f
(DI-63 ) tion (Bank 1)
S ECM
S Open or short in knock sensor 2 circuit
P0330 Knock Sensor 2 Circuit Malfunc-
S Knock sensor 2 (looseness) f f
(DI-63 ) tion (Bank 2)
S ECM
S Open or short in crankshaft position sensor circuit
P0335 Crankshaft Position Sensor "A" S Crankshaft position sensor
f f
(DI-66 ) Circuit Malfunction S Crankshaft timing pulley
S ECM
S Open or short in camshaft position sensor circuit
P0340 Camshaft Position Sensor Circuit S Camshaft position sensor
f f
(DI-68 ) Malfunction S RH camshaft timing pulley
S ECM
S Gas leakage on exhaust system
P0420 Catalyst System Efficiency Be- S A/F sensor (bank 1 sensor 1)
f f
(DI-70 ) low Threshold (Bank 1) S Heated oxygen sensor (bank 1 sensor 2)
S Three-way catalytic converter
2002 4RUNNER (RM887U)
Author : Date : 190
DI-15
DIAGNOSTICS - ENGINE (5VZ-FE)
S Hose or tube cracked, holed, damaged or loose seal ((3) in
Fig. 1)
S Fuel tank cap incorrectly installed
S Fuel tank cap cracked or damaged
S Vacuum hose cracked, holed, blocked, damaged or discon-
P0440 Evaporative Emission Control
nected ((1) or (2) in Fig. 1) f f
(DI-73 ) System Malfunction
S Fuel tank cracked, holed or damaged
S Charcoal canister cracked, holed or damaged
S Open or short in vapor pressure sensor circuit
S Vapor pressure sensor
S ECM
S Vacuum hose cracks, holed, damaged or disconnected ((1),
(4), (5), (6) and (7) in Fig. 1)
S Open or short in vapor pressure sensor circuit
S Vapor pressure sensor
P0441 Evaporative Emission Control S Open or short in VSV circuit for EVAP
f f
(DI-83 ) System Incorrect Purge Flow S VSV for EVAP
S Open or short in VSV circuit for vapor pressure sensor
S VSV for vapor pressure sensor
S Charcoal canister cracks, holed or damaged
S ECM
Evaporative Emission Control
P0442
System Leak detected (Small S Same as DTC No. P0440 f f
(DI-73 )
Leak)
S Vacuum hose cracks, holed, damaged or disconnected ((1),
(4), (5), (6) and (7) in Fig. 1)
S Open or short in vapor pressure sensor circuit
S Vapor pressure sensor
P0446 Evaporative Emission Control S Open or short in VSV circuit for EVAP
f f
(DI-83 ) System Vent Control Malfunction S VSV for EVAP
S Open or short in VSV circuit for vapor pressure sensor
S VSV for vapor pressure sensor
S Charcoal canister cracks, holed 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 Speedometer cable
P0500 Vehicle Speed Sensor Malfunc-
S Open or short in speed signal circuit f f
(DI-103 ) tion
S ECM
S Air induction system
P0505
Idle Control System Malfunction S Electric throttle control system f f
(DI-105 )
S PCV valve and hose
*1: MIL lights up.
*2: MIL lights up or blinking.
MANUFACTURER CONTROLLED
DTC No.
Detection Item Trouble Area MIL* Memory
(See page)
S Open or short in accelerator pedal position sensor circuit
P1120 Accelerator Pedal Position Sen-
S Accelerator pedal position sensor f f
(DI-107 ) sor Circuit Malfunction
S ECM
2002 4RUNNER (RM887U)
Author : Date : 191
DI-16
DIAGNOSTICS - ENGINE (5VZ-FE)
P1121 Accelerator Pedal Position Sen-
S Accelerator pedal position sensor f f
(DI-1 12) sor Range/Performance Problem
S Open or short in throttle control motor circuit
P1125 Throttle Control Motor Circuit
S Throttle control motor f f
(DI-1 13) Malfunction
S ECM
S Open or short in magnetic clutch circuit
P1126 Magnetic Clutch Circuit Malfunc-
S Magnetic clutch f f
(DI-1 15) tion
S ECM
P1127 ETCS Actuator Power Source S Open in ETCS power source circuit
f f
(DI-1 18) Circuit Malfunction S ECM
P1128 Throttle Control Motor Lock Mal- S Throttle control motor
f f
(DI-121 ) function S Throttle body assembly
P1129 Electric Throttle Control System S Electric throttle control system
f f
(DI-121 ) Malfunction S ECM
S Open or short in A/F sensor circuit
S A/F sensor
A/F Sensor Circuit Range/Perfor-
P1130 S Air induction system
mance Malfunction (Bank 1 Sen- f f
(DI-122 ) S Fuel pressure
sor 1)
S Injector
S ECM
S Open or short in A/F sensor circuit
S A/F sensor
P1133 A/F Sensor Circuit Response S Air induction system
f f
(DI-126 ) Malfunction (Bank 1 Sensor 1) S Fuel pressure
S Injector
S ECM
S Open or short in heater circuit of A/F sensor
P1135 A/F Sensor Heater Circuit Mal-
S A/F sensor heater f f
(DI-130 ) function (Bank1 Sensor 1)
S ECM
S Ignition system
S Open or short in IGF and IGT circuits from igniter to ECM
P1300
Igniter Circuit Malfunction S Igniter f f
(DI-132 )
S Ignition coil
S ECM
S Open or short in crankshaft position sensor circuit
Crankshaft Position Sensor Cir-
P1335 S Crankshaft position sensor
cuit Malfunction (During engine - f
(DI-137 ) S Signal plate
running)
S ECM
S Short in stop light switch signal circuit
P1520 Stop Light Switch Signal Mal-
S Stop light switch f f
(DI-138 ) function
S ECM
P1600 S Open in back up power source circuit
ECM BATT Malfunction f f
(DI-141 ) S ECM
P1633
ECM Malfunction (ETCS Circuit) S ECM f f
(DI-143 )
S Short in park/neutral position switch circuit
P1780 Park/Neutral Position Switch
S Park/neutral position switch f f
(DI-144 ) Malfunction (Only for A/T)
S ECM
*: f ... MIL lights up. - ... MIL does not light up.
2002 4RUNNER (RM887U)
Author : Date : 192
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