Opel Frontera UBS. Service manual — part 2609
TRANSMISSION CONTROL SYSTEM (4L30–E)
7A1–11
Diagnosis
Electronic Diagnosis
How To Diagnose The Problem
1. To avoid incorrect diagnostics, this book needs to be
followed accurately. Unless stated, do not jump
directly to a section that could contain the solution.
Some important information may be missed.
2. The sections in CAPITALS and bold are the main
sections that can be found in the contents.
3. The GOTO “SECTION” means to continue to check
going to the “section”.
4. The GOTHROUGH “SECTION” means to go
through the “section” and then to go back to the place
the GOTHROUGH was written.
5. BASIC ELECTRIC CIRCUITS:
You should understand the basic theory of electricity.
This includes the meaning of voltage, amps, ohms,
and what happens in a circuit with an open or shorted
wire. You should also be able to read and understand
wiring diagrams.
Check Trans Indicator
Find CHECK TRANS indicator and verify if it is
A. Flashing: GOTO DIAGNOSTIC CHECK.
B. Staying on: GOTHROUGH CHECK TRANS
CHECK.
C. Is never ON when the ignition key is turned on:
GOTHROUGH CHECK TRANS CHECK
D. Is ON during 2
∼
3 seconds at ignition but OFF after:
Normal operation. No DTC or malfunction.
821RW261
Diagnostic Check
This test determines if the transmission or its input or
output connections or sensors are failing.
1. Connect the Tech 2: GOTHROUGH Tech 2 OBD II
CONNECTION.
2. Turn on the ignition but not the engine.
3. Push “F0” on Tech 2 to see the Diagnostic Trouble
Code (DTC):
4. Do you have a DTC?
YES: write down all code numbers and do the DTC
CHECK
NO: the DTC can not help you finding the problem.
1. GOTHROUGH “CHECK TRANS” CHECK
2. IF it is flashing and the flash is 0.2 seconds ON
and 0.2 seconds OFF, this means that you should
have a DTC stored. Please recheck GOTO
DIAGNOSTIC CHECK and if you find the same
problem, replace the Powertrain Control Module
(PCM).
Normal
C07R200005
Abnormal
C07R200006
7A1–12 TRANSMISSION CONTROL SYSTEM (4L30–E)
“Check Trans” Check
1. Indicator it is ON during 2
∼
3 seconds at ignition (or
when the engine is cranked) but it is OFF after the
engine starts. The indicator is working normally
GOTO DIAGNOSTIC CHECK.
821RW261
Normal
C07R200005
2. Indicator it is flashing and the flash is 0.2 seconds ON
and 0.2 seconds OFF always when ignition is on
(engine cranked or not). This means that there is a
malfunction. GOTO DIAGNOSTIC CHECK.
Abnormal
C07R200006
3. Indicator it is staying ON always when Ignition is ON.
1. This means that connection between the lamp
and the PCM is shorted to ground.
2. Verify if instrument panel terminal 3 (WO/TOD) or
6 (WO/TOD) of connector I–9 is shorted to
ground.
3. Verify if the PCM connector S (RED) terminal 46
is shorted to ground.
4. Verify that the instrument panel terminal 15
(WO/TOD) or 26 (W/TOD) of connector I–9 is
connected to battery.
5. IF problem solved: GOTO CHECK TRANS
INDICATOR.
NO:Replace Powertrain Control Module (PCM).
4. Indicator it is staying OFF with the ignition ON (engine
OFF).
1. This means that connection between the lamp
and the PCM is shorted to battery or opened.
2. Verify if instrument panel terminal 3 (WO/TOD) or
6 (WO/TOD) of connector I–9 is shorted to
battery or open.
3. Verify if the PCM connector S (RED) terminal 46
is shorted to battery or open.
4. Verify that the instrument panel terminal 15
(WO/TOD) or 26 (W/TOD) of connector I–9 is
connected to battery. If not, check the fuses and
the connections voltage.
TRANSMISSION CONTROL SYSTEM (4L30–E)
7A1–13
5. IF problem solved: GOTO CHECK TRANS
INDICATOR.
NO: Replace Powertrain Control Module (PCM).
LHD
D07R200041
RHD
D07R200042
7A1–14 TRANSMISSION CONTROL SYSTEM (4L30–E)
Tech 2 OBD II Connection
In order to access OBD II Powertrain Control Module
(PCM) data, use of the Tech 2 scan tool kit (7000086) is
required.
1. The electronic diagnosis equipment is composed of:
1. Tech 2 hand held scan tool unit (7000057) and
DLC cable (3000095).
901RW176
2. SAE 16/19 adaptor (3000098) (1), RS 232 loop
back connector (3000112) (2), and PCMCIA card
(3000117) (3).
F07RW033
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