Dtc P0560 System Voltage Malfunction - Isuzu Trooper 1999 Workshop Manual

DTC P0560 System Voltage Malfunction

Circuit Description
Circuit WHT is the battery voltage feed for the PCM.
Circuit RED/BLU is the ignition voltage feed for the PCM.
This DTC detects a low voltage or a high voltage. This is a
type "D" DTC.
Conditions For Clearing The DTC
System Voltage Low:
f Engine speed is greater than 1,000 rpm.
f System voltage is less than 10 volts at a maximum
transmission temperature of 150°C (302°F).
f System voltage is less than 7.3 volts at a minimum
transmission temperature of –40°C (–40°F).
f All conditions met for 4 seconds.
System Voltage High:
f System voltage is greater than 16 volts for 2 seconds.
Action Taken When The DTC Sets
f Fixed to 4th gear.
f Maximum line pressure.
f Inhibit TCC engagement.
f The PCM will not illuminate the Malfunction Indicator
Lamp(MIL).
Conditions For Clearing The DTC
f The DTC can be cleared from the PCM history by
using a scan tool.
TRANSMISSION CONTROL SYSTEM (4L30–E)
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 Charging the battery with a battery charger and jump
starting an engine may set DTC(s). If DTC(s) set
when an accessory is operated, check for faulty
connections or excessive current draw.
f Check for faulty connections at the starter solenoid or
fusible link.
f Check for loose/damaged terminals at generator.
f Check belt wear/tension.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart.
4. This test checks charging system voltage.
5. This test checks battery voltage input at the PCM.
7. This test checks ignition voltage input at the PCM.
7A1–27
D07RW003