Opel Frontera UE. Manual - part 1025

TRANSMISSION CONTROL SYSTEM (4L30–E)

7A1–25

Transmission and PCM Identification

The chart below contains a list of all important information
concerning rear axle ratio, Powertrain Control Module
(PCM), and transmission identification.

VEHICLE

Rr axle

Ratio

PCM

TRANSMISSION

Type

Engine

Ratio

ISUZU Parts No.

Calibration

Code

Isuzu Part No.

Model Code

Isuzu/

Frontera

3.2L V6

4.100

8–09356–159–0

G20

8–96018–004–3

FL (4

Isuzu Frontera

240RX011

7A1–26 TRANSMISSION CONTROL SYSTEM (4L30–E)

Diagnostic Trouble Code (DTC)
Identification

DTC

NUMBER

FLASHING

CODE

DTC NAME

DTC TYPE

“CHECK

TRANS”

P0218

Transmission Fluid Over Temperature

P0560

System Voltage Malfunction

Flash

P0705

Transmission Range Switch (Mode Switch) Illegal
Position

P0706

Transmission Range Switch (Mode Switch)
Performance

P0712

Transmission Fluid Temperature (TFT) Sensor Circuit
Low Input

P0713

Transmission Fluid Temperature (TFT) Sensor Circuit
High Input

P0719

TCC Brake Switch Circuit High (Stuck ON)

P0722

Transmission Output Speed Sensor (OSS) Low Input

Flash

P0723

Transmission Output Speed Sensor (OSS)
Intermittent

Flash

P0730

Transmission Incorrect Gear Ratio

Flash

P0748

Pressure Control Solenoid (PCS) (Force Motor)
Circuit Electrical

Flash

P0753

Shift Solenoid A Electrical

Flash

P0758

Shift Solenoid B Electrical

Flash

P1790

ROM Transmission Side Bad Check Sum

Flash

P1792

EEPROM Transmission Side Bad Check Sum

Flash

P1835

Kick Down Switch Always ON

P1850

Brake Band Apply Solenoid Malfunction

P1860

TCC Solenoid Electrical

DTC TYPE

DEFINITION

Flashing Check Trans on 1st failure

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.

TRANSMISSION CONTROL SYSTEM (4L30–E)

7A1–27

DTC P0218/Flashing Code 71 Transmission Fluid Over Temperature

D07RX016

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 GRN/RED. 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

(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

No TFT DTCs P0712 or P0713.

TFT is greater than 135

C (275

F).

All conditions met for 21 seconds.

Action Taken When The DTC Sets

Hot mode TCC Shift Pattern.

The PCM will not illuminate the CHECK TRANS
Lamp.

ATF Lamp ON. (greater than 145

C (293

F))

Disable E–side TCC OFF request.

Conditions For Clearing The DTC

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 warm–up cycles without a failure
reported.

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

Inspect the wiring for poor electrical connections at
the PCM and at the transmission 16–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.

When diagnosing for a possible intermittent short or
open condition, move the wiring harness while
observing test equipment for a change.

Check harness routing for a potential short to ground
in circuit GRN/RED.

Scan tool TFT sensor temperature should rise
steadily to about 100

C (212

F), then stabilize.

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.

Check for a possible torque converter stator problem.

Verify customer driving habits, trailer towing, etc.

Test Description

The numbers below refer to the step numbers on the
diagnostic chart.
2. This test checks for a “skewed” sensor or shorted

circuit.

3. This test simulates a TFT DTC P0713.

7A1–28 TRANSMISSION CONTROL SYSTEM (4L30–E)

DTC P0218/Flashing Code 71 Transmission Fluid Over Temperature

Step

Action

Yes

Perform the following checks:

Check for possible engine system problems.

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 2

—

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 3

Go to Diagnostic

Aids

1. Turn the ignition “off”.
2. Disconnect the transmission 16–way connector H–10

(additional DTCs may set).

Is the TFT sensor signal voltage greater than 4.92 volts?

Go to Internal

Wiring Harness

Check

Go to Step 4

Inspect/repair circuit GRN/RED for a short to ground.

Was a problem found?

Go to Step 6

Go to Step 5

1. Inspect the PCM for poor connections.
2. Replace the PCM if no poor connections were found.

Is the replacement complete?

Go to Step 6

—

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

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