P1275 Aps 1 Circuit Fault - Isuzu 2000 Trooper Workshop Manual

Diagnostic Trouble Code (DTC) P1275 APS 1 Circuit Fault
Circuit Description
D The acceleration position (AP) sensor circuit provides
a voltage signal relative to acceleration pedal angle.
The acceleration pedal angle (AP1) will vary about
13 % at idle position to about 87 % at wide open
throttle (WOT).
This code detects a continuous short to ground or
high in either the cicuit or the sensor.
Conditions for setting the DTC
D The Ignition is "ON".
D The acceleration pedal angle is less than 2.5 % or more
than 97 % for 12 counts within 500 test samples (15.6
m sec).
Action Taken When the DTC Sets
D The PCM will store condition which werepresent when
the DTC was set as Freeze Frame and in the Failure
Records data.
Conditions for Clearing the MIL/DTC
D The PCM will turn the MIL "OFF" on the third
consecutive trip cycle during which the diagnostic has
been run and the fault condition is no longer present.
D A history DTC P1275 will clear after 40 consecutive trip
cycle during which the warm up cycles have occurred
without a fault.
TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
D DTC P1275 can be cleared using the Tech 2 "Clear
Info" function or by disconnecting the PCM battery
feed.
Diagnostic Aids
An intermittent may be caused by the following:
D Poor connectons.
D Mis routed harness.
D Rubbed through wire insulation.
D Broken wire inside the insulation.
Check for the following conditions:
D Poor connection at PCM-Inspect harness connectors
for backed out terminals, improper mating, broken
locks, improperly formed or damaged terminals,and
poor terminal to wire connection.
D Damaged harness-Inspect the wiring harness for
damage. If the harness appears to be OK,observe the
APP sensor 1 display on the Tech 2 while moving
connectors and wiring harnesses related to the sensor.
A change in the display will indicate the location of
the fault. If DTC P1275 cannot be duplicated,the
information included in the Faillure Records data
can be useful in determined vehicle mileage since
the DTC was last set.
If it is determined that the DTC occurs
intermittently, performing the DTC
P1275 Diagnostic Chart may isolate the cause of the
fault.
6E–431
D06RY00075