TOYOTA PREVIA 91-97 REPAIR MANUAL

DTC

CHART

(Cont'd)

DTC

No.

P0335 P0340 P0401 P0402 P0420 P0441 P0500

Detection

Item

Crankshaft

Position

Sensor

"A"

Circuit

MalfunctionCamshaft

Position

Sensor CircuitMalfunctionExhaust

Gas

RecirculationFlow

Insufficient

DetectedExhaust

Gas

RecirculationFlow

Excessive

DetectedCatalyst

System

Efficiency

Below

ThresholdEvaporative

Emission

Control

System

Incorrect Purge

Flow

Vehicle

Speed Sensor

Malfunction

Trouble

Area

'

MIL*

• Open

or

short

in

crankshaft position sensor

circuit

• Crankshaft

position sensor

• Starter• ECM• Open

or

short

in

camshaft

position

sensor

circuit

• Camshaft position sensor• Starter• ECM • Open

in

VSV

circuit

for

EGR

• Open

in

EGR

gas

temp,

sensor circuit

• EGR

hose

disconnected

• ECM• EGR

valve

stuck open

• VSV

for

EGR

open

malfunction

• Short

in

VSV

circuit

for

EGR

• Short

in

EGR

gas

temp,

sensor

circuit

• ECM• Three-way

catalytic

converter

• Open

or

short

in

heated

oxygen

sensor circuit

• Heated oxygen sensor• Open

or

short

in

VSV

circuit

for

EVAP

• VSV

for

EVAP

• ECM• Vacuum hose

blocked

or

disconnected

• Charcoal

canister

• Open

or

short

in

vehicle speed sensor circuit

• Vehicle speed sensor• Combination meter• ECM

o 0 c (^00)
Memory
0 C^0 o c 0
*t C MIL
lights
up
9091
4GA6
Fig.
112
Engine
diagnostic
codes—
2TZ-FZE
engine
continued
DTC
CHART
(Cont'd)
DTC
No.
P0505 P0510
i
Detection
Item
Trouble
Area
Idle
Control
System
MalfunctionClosed
Throttle
Position SwitchMalfunction

• IAC

valve

is

stuck

or

closed

• Open

or

short

in

IAC

valve

circuit

• VSVfor

A/C

idle-up

• ACV• Air

intake (hose loose)

• Open

in

closed throttle position switch circuit

• Closed

throttle position switch

• ECM

MIL* r

Memory

o 0

*:

O

MIL

lights

up

DTC

CHART

(Manufacturer

Controlled)

DTC

No.

PI

300

P1335 P1500 P1510 PI

600

P1605 P1780

Detection

Item

Igniter CircuitMalfunctionCrankshaft

Position

Sensor

Circuit

Malfunction(during

engine

running)

Starter

Signal

Circuit

Malfunction Boost

Pressure Control

Circuit

Malfunction

ECM

BATT

MalfunctionKnock

Control

CPU

Malfunction

Park/NeutralPosition SwitchMalfunction

Trouble

Area

• Open

or

short

in IGF or

IGT

circuit

from

igniter

to ECM

• Igniter• ECM• Open

or

short

in

crankshaft position

sensor

circuit

• Crankshaft position sensor• ECM• Open

or

short

in

starter signal circuit

• Open

or

short

in

ignition

switch

or

starter

relay

circuit

• ECM* Open

or

short

in

supercharger

magnetic

clutch

relay

circuit

• Supercharger magnetic clutch

relay

• Supercharger magnetic clutch• Open

or

short

in

supercharger

bypass

valve

circuit

• Supercharger bypass valve• ECM• Air

intake

(hose

loose]

• Open

in

back

up

power source circuit

• ECM• ECM• Short

in

park/neutral

position

switch

circuit

• Park/neutral position switch• ECM

MIL*

• 
  
  
  
  • 
    
    
    
    • C 0
    
    
    
    
  
  
  
  

Memory

° o (", 0 o

*:

• MIL

does

not

light

up

9Q914GA7

C

MIL

lights

up

Fig.

113

Engine

diagnostic

codes—

2TZ-FZE

engine

continued

ZD COCO COCDCD UOOI—CO CO-xj