Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 1575
TRANSMISSION CONTROL SYSTEM (4L30–E)
7A1–25
Diagnostic Trouble Code (DTC)
Identification
DTC
NUMBER
DTC NAME
DTC TYPE
MIL “CHECK
ENGINE”
“CHECK
TRANS”
P0218
Transmission Fluid Over Temperature
D
P0705
Transmission Range Switch (Mode Switch) Illegal
Position
D
P0706
Transmission Range Switch (Mode Switch)
Performance
D
P0711
Transmission Fluid Temperature (TFT) Sensor
Performance
D
P0712
Transmission Fluid Temperature (TFT) Sensor
Circuit Low Input
D
P0713
Transmission Fluid Temperature (TFT) Sensor
Circuit High Input
D
P0719
Brake Switch Circuit Low (Stuck On)
D
P0722
Automatic Transmission Output Speed Sensor
(OSS) Low Input
B
ON
Flash
P0723
Automatic Transmission Output Speed Sensor
(OSS) Intermittent
B
ON
Flash
P0724
Brake Switch Circuit High (Stuck Off)
D
P0730
Gear Error Without Input Speed
C
Flash
P0742
Torque Converter Clutch (TCC) System Stuck On
B
ON
Flash
P0748
Pressure Control Solenoid (PCS) (Force Motor)
Circuit Electrical
C
Flash
P0751
Shift Solenoid A Performance (Stuck Off)
B
ON
Flash
P0752
Shift Solenoid A Performance (Stuck On)
B
ON
Flash
P0753
Shift Solenoid A Electrical
B
ON
Flash
P0756
Shift Solenoid B Performance (Stuck Off)
B
ON
Flash
P0757
Shift Solenoid B Performance (Stuck On)
B
ON
Flash
P0758
Shift Solenoid B Electrical
B
ON
Flash
P1850
Brake Band Apply Solenoid Malfunction
D
P1860
TCC Solenoid Electrical
B
ON
Flash
P1870
Transmission Component Slipping (TCC Stuck
Off)
B
ON
Flash
DTC TYPE
DEFINITION
B
Emission related, turn on MIL (Check Engine) and flashing Check Trans after 2 consecutive trips
(Removal to confirmed)
C
Non–emission related, flashing Check Trans on 1st failure
D
Non–emission related, no lamps
NOTE: On the following charts, refer to Powertrain
Control Module (PCM) section for Wiring System and the
Body and Accessories section for circuit diagram details,
parts location, and connector configuration.
7A1–26 TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0218 Transmission Fluid Over Temperature
D07RY00029
Circuit Description
The Transmission Fluid Temperature (TFT) sensor is a
thermister that controls the signal voltage to the PCM.
The PCM supplies a 5–volt reference to the sensor on
circuit RED/BLK. When the transmission fluid is cold, the
sensor resistance is high and the PCM will sense high
signal voltage. As the fluid temperature warms to a
normal transmission operating temperature of 100
°
C
(212
°
F), the sensor resistance becomes less and the
voltage decreases to 1.5 to 2.0 volts.
This DTC detects a high transmission temperature for a
long period of time. This is a type “D” DTC.
Conditions For Setting The DTC
D
No TFT DTCs P0712 or P0713.
D
TFT is greater than 135
°
C (275
°
F).
D
All conditions met for 21 seconds.
Action Taken When The DTC Sets
D
Hot mode TCC Shift Pattern.
D
The PCM will not illuminate the Malfunction Indicator
Lamp (MIL).
D
ATF Lamp ON. (TFT is greater than 145
°
C (293
°
F))
D
Disable E–side TCC OFF request.
Conditions For Clearing The DTC
D
The DTC can be cleared from the PCM history by
using a scan tool.
D
The DTC will be cleared from history when the vehicle
has achieved 40 warm–up cycles without a failure
reported.
D
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
D
Inspect the wiring for poor electrical connections at
the PCM and transmission 7-way 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.
D
When diagnosing for a possible intermittent short or
open condition, move the wiring harness while
observing test equipment for a change.
D
Check harness routing for a potential short to ground
in circuit RED/BLK.
D
Scan tool TFT sensor temperature should rise
steadily to about 100
°
C (212
°
F), then stabilize.
D
Check for a “skewed” (mis–scaled) sensor by
comparing the TFT sensor temperature to the
ambient temperature after a vehicle cold soak. A
“skewed” sensor can cause delayed garage shifts or
TCC complaints.
D
Check for a possible torque converter stator problem.
D
Verify customer driving habits, trailer towing, etc.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart.
3. This test checks for a “skewed” sensor or shorted
circuit.
4. This test simulates a TFT DTC P0713.
TRANSMISSION CONTROL SYSTEM (4L30–E)
7A1–27
DTC P0218 Transmission Fluid Over Temperature
Step
Action
Yes
No
1
Were you sent here from the “Powertrain On–Board Diagnostic
(OBD) System Check”?
Go to Step 2
Go to OBD
System Check
Refer to
Driveability and
Emissions in
Engine section
2
Perform the following checks:
D
Check for possible engine system problems.
D
Transmission fluid checking procedure. Refer to Checking
Transmission Fluid Level and Condition in Automatic
Transmission (4L30–E) Section.
Were the checks performed?
Go to Step 3
—
3
1. Install the scan tool.
2. With the engine “off”, turn the ignition switch “on”.
NOTE: Before clearing DTC(s), use the scan tool to record “Failure
Records” for reference, as data will be lost when “Clear Info”
function is used.
3. Record the DTC “Failure Records”.
Is the TFT sensor signal voltage less than 0.33 volts?
Go to Step 4
Go to Diagnostic
Aids
4
1. Turn the ignition “off”.
2. Disconnect the transmission 7–way connector E–54
(additional DTCs may set).
3. With the engine “Off”, turn the ignition switch “On”.
Is the TFT sensor signal voltage greater than 4.92 volts?
Go to Internal
Wiring Harness
Check
Go to Step 5
5
Inspect/repair circuit RED/BLK for a short to ground.
Was a problem found?
Go to Step 7
Go to Step 6
6
1. Inspect the PCM for poor connections.
2. Replace the PCM if no poor connections were found.
Is the replacement complete?
Go to Step 7
—
7
1. After the repair is complete, use the scan tool to select “DTC”,
then “Clear Info” function and ensure the following conditions
are met:
TFT is less than 125
°
C (257
°
F) for at least 10 seconds.
2. Review the scan tool “DTC Info”.
Has the last test failed or is the current DTC displayed?
Begin diagnosis
again
Go to Step 1
Repair verified
Exit DTC table
7A1–28 TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0705 Transmission Range Switch (Mode Switch) Illegal Position
D07R100017
Circuit Description
D
The range switch supplies the Powertrain Control
Module (PCM) with information regarding the selector
lever position: P, R, N, D, 3, 2 or L. The selector lever
position is indicated by the state of four ON/OFF
contacts. The range switch is located on one side of
the transmission. It is on the transmission manual
shaft and is fixed to the main case.
D
The range switch is also used to provide the
information P or N to the engine crank wiring. The
engine can be cranked only if connector E–53
terminal 4(H) is connected to terminal 1(E) which is
connected to ground.
D
The range switch is also used to provide the backup
lamp power in reverse. This is the reason why the
range switch is supplied through a 15A fuse (TURN,
BACK UP). This fuse can burn due to a short circuit in
the back up lamp.
This DTC detects when a fuse is open or the range switch
circuit does not work. This is a type “D” DTC.
Conditions For Setting The DTC
D
Range switch illegal positions met for 5 seconds.
Action Taken When The DTC Sets
D
Default to D position.
D
Inhibit torque management.
D
Maximum line pressure.
D
Turn Force Motor OFF.
D
The PCM will not illuminate the Malfunction Indicator
Lamp (MIL).
Conditions For Clearing The DTC
D
The DTC can be cleared from the PCM history by
using a scan tool.
D
The DTC will be cleared from history when the vehicle
has achieved 40 warmup cycles without a failure
reported.
D
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
D
Refer to accompanying chart for the normal range
signals and the illegal combinations.
D
Inspect the wiring for poor electrical connections at
the PCM and at the transmission 8–way 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.
D
When diagnosing for a possible intermittent short or
open condition, move the wiring harness while
observing test equipment for a change.
D
Refer to the “Range Switch Logic Table” for further
information.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст