2002 ISUZU AXIOM Service Repair Manual

jump start rear view mirror drain bolt oil temperature turn signal bulb air condition

Page 1769 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A1±82
TRANSMISSION CONTROL SYSTEM (4L30±E)
DTC P1870 Transmission Component Slipping (TCC Stuck Off)
D07R200008
Circuit Description
The PCM monitors the difference in engine speed and
transmission

7A1±82
TRANSMISSION CONTROL SYSTEM (4L30±E)
DTC P1870 Transmission Component Slipping (TCC Stuck Off)
D07R200008
Circuit Description
The PCM monitors the difference in engine speed and
transmission output speed. For example in D3 drive
range with the ECCC commanded, the engine speed
should closely match transmission output speed.
This DTC detects excessive TCC slip when the ECCC is
engaged. This is a type ªBº DTC.
Conditions For Setting The DTC
The following conditions are met for three TCC cycles
with reported excessive TCC slip conditions.
No OSS DTCs P0722 or P0723.
No shift solenoid A DTCs P0751 or P0752 or P0753.
No shift solenoid B DTCs P0756 or P0757 or P0758.
No TCC solenoid DTCs P0742 or P1860 or P1870.
Engine speed is between 1,000 and 3,500 rpm for 0.5
seconds.
Gear range is D4.
13% < TPS < 99%
50 < Engine Torque < 300 N´m
TFT is between 20 and 150C (68 and 302F).
TCC slip speed is between 250 rpm and 800 rpm for 3
times 7 seconds.
Vehicle speed is between 25 km/h (15 mph) and 225
km/h (158 mph).
Speed ratio is between 0.6 and 0.95.
ECCC is ªONº.Low (0.8) < TCC Capacity < hi (0.99) for 5 seconds
Action Taken When The DTC Sets
Only stored in memory.
For lamp illuminate refer to
DTC type definition (type
B).
Conditions For Clearing The MIL/DTC
The PCM will turn off the MIL and CHECK TRANS
Lamp after three consecutive ignition cycles without a
failure reported.
The DTC can be cleared from the PCM history by
using a scan tool.
The DTC will be cleared from history when the vehicle
has achieved 40 warmup cycles without a failure
reported.
The PCM will cancel the DTC default actions when
the fault no longer exist and the ignition is cycled ªoffº
long enough to power down the PCM.
Diagnostic Aids
Range switch malfunction could set a DTC P1870.
A mechanical failure of the shift solenoids, TCC
solenoid, or TCC PWM solenoid could set a DTC
P1870.
Internal transmission failures may set a DTC P1870.
An intermittent or incorrect engine speed signal may
set a DTC P1870.

Page 1770 of 2100

ISUZU AXIOM 2002 Service Repair Manual TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±83
Test Description
The numbers below refer to the step numbers on the
diagnostic chart:
2. This test checks the indicated range signal to the
actual selected

Page 1771 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A1±84
TRANSMISSION CONTROL SYSTEM (4L30±E)
Circuit Diagram
D07R200012

Page 1772 of 2100

ISUZU AXIOM 2002 Service Repair Manual TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±85
D07R200013

Page 1773 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A1±86
TRANSMISSION CONTROL SYSTEM (4L30±E)
Parts Location
D07R200014
Legend
(1) Connector I±10
(2) Connector E±44
(3) Connector I±22
(4) Connector I±23
(5) Connector I±24
(6) Data Link Connect

Page 1774 of 2100

ISUZU AXIOM 2002 Service Repair Manual TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±87
Harness Connector Faces
No.Connector face
B-16
C-39
E-7
E-11
E-33
E-34
(J1)
E-35
(J2)
E-40
E-41
No.Connector face
E-42
E-44
H-3
H-5
H-6
H-8
H-9
H-11
H-14

Page 1775 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A1±88
TRANSMISSION CONTROL SYSTEM (4L30±E)
No.Connector face
H-16
H-17
H-18
I-10
I-22
I-23
I-24
I-31
I-32
No.Connector face
X-11

Page 1776 of 2100

ISUZU AXIOM 2002 Service Repair Manual TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±89
Transmission Fluid Temperature (TFT) Sensor Specifications
TemperatureTemperatureMinimum
ResistanceNominal
ResistanceMaximum
ResistanceSignal
FCVol

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