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MULTIPORT FUEL INJECTION Troubleshooting
DTC No.
Title
Probable causes
PO51 0
Closed Throttle Position Switch Malfunction
Background
l
While the engine is idling without pressing the accelerator pedal, “ON” signal can be input
from the closed throttle position switch to the engine control module.
l
The engine control module is used for checking the input signal during the engine idling.
Range of Check
l
The vehicle is under stopping, however, the vehicle should have been driven at speed
on or over 30 km/h at least one time before the vehicle is stopped.
l
The engine speed is approx. 800
or below.
Set Conditions
l
“OFF” signal was input from the closed throttle position switch for 2 seconds.
l
Closed throttle position switch
failed.
l
Open or shorted closed throttle
position switch circuit, or loose
connector.
l
Engine control module failed.
DTC No.
Title
I
Transmission Range Sensor Circuit Malfunction
Probable causes
PO705
(RPNDL Input)
Background
l
When a malfunction of the park/neutral position switch is detected, the transaxle control
module outputs a malfunction signal to the engine control module.
Range of Check, Set Conditions
l
The park/neutral position switch failure signal is input to the engine control module.
l
Park/neutral position switch
failed.
l
Open or shorted park/neutral
position switch circuit, or loose
connector.
l
Engine control module failed.
DTC No.
Title
Transmission Fluid Temperature Sensor Circuit
Probable causes
PO71 0
Malfunction
Background
l
Oil temperature sensor failed.
l
When a malfunction of the fluid temperature sensor is detected, the transaxle control module
l
Open or shorted temperature
outputs a malfunction signal to the engine control module.
sensor circuit, or loose
tor.
l
Engine control module failed.
Range of Check, Set Conditions
l
The fluid temperature sensor failure signal is input to the engine control module.
DTC No.
Title
Turbocharger Waste Gate Actuator Malfunction
Background
l
The engine control module always monitors the intake air amount to check if the engine
is in overboosted condition.
l
When the engine control module judges that the engine is in an overboosted condition,
it cuts off the fuel supply to protect the engine.
Range of Check, Set Conditions
l
A condition where the fuel supply is to be shut off is detected.
Probable causes
l
Turbocharger waste gate actua-
tor failed.
l
Boost pressure control system
failed.
l
Engine control module failed.
TSB Revision
Содержание 1992 3000GT
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