low oil pressure ISUZU AXIOM 2002 Service Manual PDF

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±79
DTC P1860 TCC PWM Solenoid Electrical
D07R200011
Circuit Description
The PCM allows current to flow through the solenoid coil
according to the duty cycle (percentage of ªonº and ªoffº
time). This current flow through the solenoid coil creates
a magnetic field that magnetizes the solid core. The
magnetized core attracts the check ball to seat against
spring pressure. This blocks the exhaust for the TCC
signal fluid and allows 2±3 drive fluid to feed to TCC signal
circuit.The TCC signal fluid pressure acts on the TCC
regulator valve to regulate line pressure and to apply fluid
pressure to the torque converter clutch shift control valve.
When the TCC shift valve is in the apply position,
regulated apply fluid pressure is directed through the TCC
valve to apply the torque converter clutch. The TCC
PWM solenoid is used in conjunction with the TCC PWM
solenoid to regulate fluid to the torque converter. The
TCC PWM solenoid is attached to the valve body within
the transmission.
This DTC detects a continuous open or short to ground or
ignition in the TCC circuit or the TCC PWM solenoid. This
is a type ªBº DTC.
Conditions For Setting The DTC

Battery voltage is between 10 and 16 volts.

No shift solenoid A DTCs P0751 or P0752 or P0753.

No shift solenoid B DTCs P0756 or P0757 or P0758.

Ignition is ªonº, Engine ªrunº.

The PCM commands the solenoid ªonº and the
voltage remains low (zero volts).

The PCM commands the solenoid ªoffº and the
voltage remains high (B+).

All conditions met for 0.875 ~ 1.25 seconds.
Action Taken When The DTC Sets

Inhibit TCC engagement.
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 exists and the ignition is cycled ªoffº
long enough to power down the PCM.
Diagnostic Aids

Inspect the wiring for poor electrical connections at
the PCM and at the transmission connector. Look for
possible bent, backed out, deformed or damaged
terminals. Check for weak terminal tension as well.
Also check for a chafed wire that could short to bare
metal or other wiring. Inspect for a broken wire inside
the insulation.

When diagnosing for a possible intermittent short or
open condition, move the wiring harness while
observing test equipment for a change.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart
:
3. This test checks for voltage to the solenoid.
4. This test checks the ability of the PCM and wiring to
control the ignition circuit.
9. This test checks the resistance of the TCC solenoid
and the internal wiring harness.

8A±22LIGHTING SYSTEM
Light NameBulb No.Rated
PowerNumber of
BulbsLens ColorRemarks
Headlight9005/900660w/51w2WhiteHalogen
Front Turn signal Light/
Front Side Marker Light/Parking Light1157NA27w/8w2Amber
Rear Turn Signal Light744021w2Amber
Backup Light92118w2White
Taillight/Stoplight744321w/5w2Red
High Mounted Stoplight92118w2Red
License Plate Light (Tailgate type)1685w2White
Map LightÐ8w2White
Dome LightÐ10w1White
Luggage Room LightÐ5w1White
Courtesy LightÐ3.4w4White
Check TransÐ1.4w1RedMeter
A/T Oil TempÐ1.4w1RedMeter
Cruise SetÐ1.4w1GreenMeter
Power DriveÐ1.4w1AmberMeter
Winter DriveÐ1.4w1GreenMeter
Turn SignalÐ1.4w2GreenMeter
Check TODÐ1.4w1RedMeter
High BeamÐ1.4w1BlueMeter
ABSÐ1.4w1AmberMeter
Seat BeltÐ2w1RedMeter
Indicator/Warning
Malfunction Indicator
(Check Engine)Ð1.4w1AmberMeter
Indicator/Warning
LightLow FuelÐ1.4w1AmberMeterg
Reduced PowerÐ1.4w1AmberMeter
Sports ModeÐ1.4w1GreenMeter
TOD FrontÐ1.1w1GreenMeter
TOD AutoÐ1.1w1GreenMeter
TOD RearÐ1.1w1GreenMeter
Oil PressureÐ1.4w1RedMeter
Brake SystemÐ1.4w1RedMeter
ChargeÐ1.4w1RedMeter
A/T Shift PositionÐ1.1w7
P,N,D,3,2,L
:Green
R: Amber
Meter
Air BagÐ2w1RedMeter
Illumination LightMeterÐ3.4w4Meter
Shift leverÐ1.4w1WhiteShift lever
Vanity MirrorÐ2w2WhiteSun Visor
Cigarette LighterÐ1.4w1WhiteCigarette
Lighter
AshtrayÐ1.4w1WhiteAshtray

METER AND GAUGE8E±1
AXIOM
BODY AND ACCESSORIES
METER AND GAUGE
CONTENTS
Service Precaution 8E±1. . . . . . . . . . . . . . . . . . . . . .
General Description 8E±1. . . . . . . . . . . . . . . . . . . . .
Meter Assembly 8E±2. . . . . . . . . . . . . . . . . . . . . . . . .
General Description 8E±2. . . . . . . . . . . . . . . . . . . . .
Layout for Meters/Gauges, Warning Lights,
Indicator Lights and Illumination Lights 8E±2. . .
Table for Meter/Gauge Connector Terminal
Connections 8E±4. . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8E±6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8E±6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning Light Bulb and Indicator Light Bulb 8E±6. Removal 8E±6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8E±6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
A/T Shift Indicator Light Bulb 8E±7. . . . . . . . . . . . . .
Removal 8E±7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8E±8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle Speed Sensor 8E±9. . . . . . . . . . . . . . . . . . .
Removal 8E±9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8E±9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Tank Unit 8E±9. . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8E±9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 8E±10. . . . . . . . . . . . .
Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.
General Description
The circuit consists of the starter switch, meter assembly,
vehicle speed sensor, transmission switch, lighting
switch, turn signal switch, thermo unit, oil pressure unit,
Powertrain Control Module (PCM), fuel tank unit, 4WD
switch, oil pressure switch, parking brake switch, brake
fluid switch, seat belt switch, illumination controller, meter
and ambient sensor.

METER AND GAUGE8E±5
Connector A
TerminalFunction
1Ð
2Intelligent suspension indicator light
3TOD indicator light ªRearº
4Ð
5TOD indicator light ªAUTOº
6Ð
7TOD indicator light ªFrontº
8A/T shift indicator light ª3º
9A/T shift indicator light ªDº
10A/T shift indicator light ª2º
11SRS ± air bag warning light
12Ground
13Battery
14Stater switch
15A/T oil temperature warning light
16Seat belt indicator light
17Charge warning light
18Ð
19Ð
20Ð
21A/T shift indicator light ªLº
22ABS warning light
23Ð
24Ð
25Reduced power warning light
26Oil pressure warning light
27Check trans warning light
28MIL(check engine) warning light
29Check TOD
30Engine coolant temperature gauge
Connector B
TerminalFunction
1A/T shift indicator light ªRº
2A/T shift indicator light
3A/T shift indicator light ªNº
4A/T shift indicator light ªPº
5Illumination light
6Engine revolution pulse
7Speed sensor pulse
8Turn signal indicator light (LH)
9Brake warning light
10High beam indicator light (+)
11High beam indicator light (±)
12Turn signal indicator light (RH)
13Turn signal indicator light
14Ð
15Illumination light
16Ground
Connector C
TerminalFunction
1Starter switch
2Ð
3Fuel gauge
4Low fuel warning light
5Cruise set indicator light
6Ð
7Ð
8Ð
9Ð
10Sport mode indicator light
11Ð
12Winter drive indicator light
13Power drive indicator light
14Ð