Page 2777 of 4770

± DIAGNOSTICSENGINE (1MZ±FE)
DI±357
592 Author: Date:
DTC P1335 Crankshaft Position Sensor Circuit
Malfunction (during engine running)
CIRCUIT DESCRIPTION
Refer to DTC P0335 (Crankshaft Position Sensor ºAº Circuit Malfunction) on page DI±287.
DTC No.DTC Detecting ConditionTrouble Area
P1335No crankshaft position sensor signal to ECM with engine
speed 1,000 rpm or more
Open or short in crankshaft position sensor circuit
Crankshaft position sensor
Starter
ECM
WIRING DIAGRAM
Refer to DTC P0335 (Crankshaft Position Sensor ºAº Circuit Malfunction) on page DI±287.
INSPECTION PROCEDURE
Read freeze frame data using TOYOTA hand±held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected, when troubleshooting it is useful for determining
whether the vehicle was running or stopped, the engine warmed up or not, the air±fuel ratio lean or rich, etc.
at the time of the malfunction.
Refer to DTC P0335 (Crankshaft Position Sensor ºAº Circuit Malfunction) on page DI±287.
DI085±06
Page 2778 of 4770
S06113
Close u Valve Opening " Open 0V 5V
Output Voltage
S05464
EGR Valve Position Sensor
3ECM
1
2Y
W±G
BRVC5V
EGLS
E2 E102
E1122
E1018 DI±358
± DIAGNOSTICSENGINE (1MZ±FE)
593 Author: Date:
DTC P1410 EGR Valve Position Sensor Circuit
Malfunction
CIRCUIT DESCRIPTION
The EGR valve position sensor is mounted on the EGR valve
and detects the lift amount of EGR valve. The lift amount of
EGR valve which is detected by the EGR valve position sensor
provides feedback to the ECM to control the lift amount of EGR
valve in response to engine operating conditions.
DTC No.DTC Detecting ConditionTrouble Area
P1410Open or short in EGR valve position sensor circuit
(2 trip detection logic)Open or short in EGR valve position sensor circuit
EGR valve position sensor
ECM
WIRING DIAGRAM
DI086±06
Page 2779 of 4770

A00379
ON
1 (+)
BE6653S05694
S05742
1
2
± DIAGNOSTICSENGINE (1MZ±FE)
DI±359
594 Author: Date:
INSPECTION PROCEDURE
HINT:
If DTCs ºP0110º (Intake Air Temp. Circuit Malfunction), ºP0115º (Engine Coolant Temp. Circuit Mal-
function), ºP0120º (Throttle/Pedal Position/Switch ºAº Circuit Malfunction), ºP1410º (EGR Valve Posi-
tion Sensor Circuit Malfunction) are output simultaneously, E2 (Sensor Ground) may be open.
Read freeze frame data using TOYOTA hand±held tester or OBD II scan tool. Because freeze frame
records the engine conditions when the malfunction is detected, when troubleshooting it is useful for
determining whether the vehicle was running or stopped, the engine warmed up or not, the air±fuel
ratio lean or rich, etc. at the time of the malfunction.
1 Check voltage between terminal VC of wire harness side connector and body
ground.
PREPARATION:
(a) Disconnect the vacuum hose from EGR valve.
(b) Disconnect the EGR valve position sensor connector.
(c) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal 1 of wire harness side con-
nector and body ground.
OK:
Voltage: 4.5 ~ 5.5 V
NG Go to step 4.
OK
2 Check EGR valve position sensor.
PREPARATION:
Disconnect the EGR valve position sensor connector.
CHECK:
Measure resistance between terminals 1 (VC) and 2 (E2) of
EGR valve position sensor.
OK:
Resistance: 1.5 ~ 4.3 kW
NG Replace EGR valve position sensor.
OK
Page 2780 of 4770
A02036
ON
EGLS (+) E2 (±)
DI±360
± DIAGNOSTICSENGINE (1MZ±FE)
595 Author: Date:
3 Check voltage between terminals EGLS and E2 of ECM connectors.
PREPARATION:
(a) Disconnect the vacuum hose from EGR valve.
(b) Connect the hand±held vacuum pump to EGR valve.
(c) Remove the glove compartment (See page SF±73).
(d) Turn the ignition switch ON.
CHECK:
Measure voltage between terminals EGLS and E2 of the ECM
connectors.
OK:
ConditionVltEGR valveVacuumVoltage
Fully closed0 kPa
(0 mmHg, 0 in.Hg)0.4 ~ 1.6 V
Fully open17.3 kPa
(130 mmHg, 5.12 in.Hg)3.2 ~ 5.1 V
NG Check for open and short in harness and
connector between ECM and EGR valve
position sensor (EGLS or E2 line).
OK
Check and replace ECM (See page IN±31).
Page 2781 of 4770
A02022
ON
VC (+) E2 (±)
± DIAGNOSTICSENGINE (1MZ±FE)
DI±361
596 Author: Date:
4 Check voltage between terminals VC and E2 of ECM connector.
PREPARATION:
(a) Remove the glove compartment (See page SF±73).
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminals VC and E2 of the ECM
connector.
OK:
Voltage: 4.5 ~ 5.5 V
NG Check and replace ECM (See page
IN±31).
OK
Check for open and short in harness and
connector between ECM and EGR valve
position sensor (VC line).
Page 2782 of 4770
DI±362
± DIAGNOSTICSENGINE (1MZ±FE)
597 Author: Date:
DTC P1411 EGR Valve Position Sensor Circuit
Range/Performance Problem
CIRCUIT DESCRIPTION
Refer to DTC P1410 (EGR Valve Position Sensor Circuit Malfunction) on page DI±358.
DTC No.DTC Detecting ConditionTrouble Area
P1411
Conditions (a) and (b) continue for 500 msec. or more:
(2 trip detection logic)
(a) Engine Coolant Temp. < 55C (415F)
(b) EGLS 1.65 V or EGLS < 0.35 V
EGR valve position sensor
INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand±held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected, when troubleshooting it is useful for determining
whether the vehicle was running or stopped, the engine warmed up or not, the air±fuel ratio lean or rich, etc.
at the time of the malfunction.
1 Are there any other codes (besides DTC P1411) being output?
YES Go to relevant DTC chart.
NO
Replace EGR valve position sensor.
DI087±06
Page 2783 of 4770
A07449
Fusible
Link
Block
FL
MAINStop Light Switch
B±G1B 1CSTOP
WG±WLight
Failure
Sensor 7
2
To Stop Light Instrument Panel J/B
Instrument Panel J/B
E7 15
G±W
1S 1R
1R1
2
F9
F4
BatteryECM
STP
E1 B±R
ALT
G±WA
C
J27Junction
Connector
J2845
2
G±W7 4
1
1
± DIAGNOSTICSENGINE (1MZ±FE)
DI±363
598 Author: Date:
DTC P1520 Stop Light Switch Signal Malfunction
(Only for A/T)
CIRCUIT DESCRIPTION
This signal is used to detect when the brakes have been applied. The STP signal voltage is the same as
the voltage supplied to the stop lights.
The STP signal is used mainly to control the fuel cut±off engine speed (The fuel cut±off engine speed is re-
duced slightly when the vehicle is braking.).
DTC No.DTC Detecting ConditionTrouble Area
P1520
Stop light switch does not turn off when repeating the driving at
30 km or more 10 times or more after depressing brake
(2 trip detection logic)Short in stop light switch signal circuit
Stop light switch
ECM
WIRING DIAGRAM
DI088±06
Page 2784 of 4770

A02037
ON
ON
Brake Pedal
DepressedBrake Pedal
Released
STP (+)
DI±364
± DIAGNOSTICSENGINE (1MZ±FE)
599 Author: Date:
INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand±held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected, when troubleshooting it is useful for determining
whether the vehicle was running or stopped, the engine warmed up or not, the air±fuel ratio lean or rich, etc.
at the time of the malfunction.
1 Check operation of stop light.
CHECK:
Check if the stop lights go on and off normally when the brake pedal is operated and released.
NG Check and repair stop light circuit.
OK
2 Check STP signal.
When using TOYOTA hand±held tester:
PREPARATION:
(a) Connect the TOYOTA hand±held tester to the DLC3.
(b) Turn the ignition switch ON and push the TOYOTA hand±
held tester main switch ON.
CHECK:
Read the STP signal on the TOYOTA hand±held tester.
OK:
Brake pedal is depressed: STP ...... ON
Brake pedal is released: STP ...... OFF
When not using TOYOTA hand±held tester:
PREPARATION:
Turn the ignition switch ON.
CHECK:
Check voltage between terminal STP of the ECM connector
and body ground.
OK:
Brake pedalVoltage
Depressed7.5 ~ 14 V
ReleasedBelow 1.5 V
OK Check for intermittent problems
(See page DI±197).
NG