Dtc P1835 Kickdown Switch Always On - Isuzu 1999 RODEO Workshop Manual

DTC P1835 Kickdown Switch Always On

Circuit Description
f When the driver presses the accelerator pedal down
fully, the kickdown switch closes, sending a ground
signal to the Powertrain Control Module (PCM).
f This information is used to perform shifts at high
engine speed.
f When the kickdown switch is closed, the Throttle
Position Sensor (TPS) is already at 100%.
f This DTC detects a closed kickdown switch when TP
angle is less than 70%.
f This is a type "D" DTC.
Conditions For Setting The DTC
f No TP DTCs P0122 or P0123.
f TP angle is less than 70%.
f Kickdown switch is "on".
f All conditions met for 1 second.
Action Taken When The DTC Sets.
f Kickdown mode control is off.
f The PCM will not illuminate the Malfunction Indicator
Lamp (MIL).
TRANSMISSION CONTROL SYSTEM (4L30–E)
Conditions For Clearing The DTC
f The DTC can be cleared from the PCM history by
using a scan tool.
f The DTC will be cleared from history when the vehicle
has achieved 40 warmup cycles without a failure
reported.
f The PCM will cancel the DTC default actions when
the fault no longer exists and the ignition is cycled "off"
long enough to power down the PCM.
Diagnostic Aids
f Check the wiring harness for a short to ground
between the PCM and kickdown switch.
f Check the kickdown switch for failure.
f Check kickdown adjustment.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart:
2. This test checks for short to ground or kickdown
switch failure.
4. This test checks for regulation kickdown switch.
7A1–77
D07RW015