1998 OPEL FRONTERA wiring

TRANSMISSION CONTROL SYSTEM (4L30–E)7A1–59
DTC P0758 Shift Solenoid B Electrical
D07RW009
Circuit Description
The shift solenoid B is a simple on/off solenoid
located in the main case valve body. It is normally
open. When the port is open, fluid pressure actuates
the shift valve. In first or second gear, the Powertrain
Control Module (PCM) energizes the solenoid to
close a fluid inlet port.
The solenoid is activated by current. This current is
procuded by applying a voltage to one side (the High
side) and a ground to the other side (Low side).
The High Side Driver (HSD) is a circuit of the PCM
that acts as a switch between the solenoids and the
supply voltage. The High side of the solenoid is
permanently supplied with voltage. In BACKUP
MODE or when the ignition is off, the HSD is turned
off.
This DTC detects a continuous open or short to ground in
the shift solenoid B circuit or shift solenoid B. This is a
type “C” DTC.
Conditions For Setting The DTC
Ignition is “on”, Engine “run”.
Battery voltage is between 10 and 16 volts.
The PCM commands the solenoid “on” and the
voltage remains high (B+)or the PCM commands the
solenoid “off” and the voltage remains low (zero
volts).
All conditions met for 0.33 seconds.
Action Taken When The DTC Sets
Fixed to 4th gear.
Maximum line pressure.
Inhibit TCC engagement.
The PCM will illuminate the CHECK TRANS Lamp.
Conditions For Clearing The MIL/DTC
The PCM will turn off the 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 “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 we ll. A lso ch eck fo r a ch af e d w ire th at cou l d s ho r t
to bare metal or other wiring. Inspect for a broken wire
inside the insulation.

7A1–60
TRANSMISSION CONTROL SYSTEM (4L30–E)
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 char:
5. This test measures the resistance of the component.
7. This test checks the function of the shift solenoid B
and the transmission internal wiring harness.
11.This test checks for power to the shift solenoid B
from the ignition through the PCM.Shift Solenoid Status Chart
Gear
Shift solenoid AShift solenoid B
1stOFFON
2ndONON
3rdONOFF
4thOFFOFF
DTC P0758 Shift Solenoid B Electrical
StepActionYe sNo
11. Install the scan tool.
2. With the engine “on”, 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 the “Clear Info”
function is used.
3. Record the DTC “Failure Records”.
Were DTCs P0753, P0758, P1860 set?
Go to Step 3Go to Step 2
21. The engine “on”.
2. Apply brake pedal and select transmission range “D”.
3. Press and hold down the winter switch and select transmission
mode “winter”.
Does the scan tool display DTC P0758 at 3rd gear?
Go to Step 7
Go to Diagnostic
Aids
31. Turn the ignition “off”.
2. Disconnect the J2 (WHITE) and J3 (BLUE) PCM connectors.
3. Turn the ignition “on”.
4. Using the J39200 DVOM, measure the voltage between PCM
connector terminals J2–C2 and J2–C8.
Is the voltage within 10 – 12 volts?
Go to Step 14Go to Step 4
41. Turn the ignition “off”.
2. Using the J39200 DVOM, measure the resistance between
PCM connector terminals J2–C2 and J3–E14.
Is the resistance within 18 – 20 ohms?
Go to Step 15Go to Step 5
51. Disconnect the transmission 16–way connector H–53.
2. Using the J39200 DVOM, measure the resistance between
terminals H53–16 and H53–15.
Is the resistance within 18 – 20 ohms?
Go to Step 16Go to Step 6
61. Disconnect the transmission main case connector M–7.
2. Using the J39200 DVOM, measure the resistance between
terminals M7–1(A) and M7–4(C).
Is the resistance within 18 – 20 ohms?
Go to Step 17Go to Step 18
71. Turn the ignition “off”.
2. Disconnect the J2 (WHITE) and J3 (BLUE) PCM connectors.
3. Using the J39200 DVOM, measure the resistance between
PCM connector terminals J2–C2 and J3–E14.
Is the resistance within 18 – 20 ohms?
Go to Step 8Go to Step 9
8Using the J39200 DVOM, check a continuity between PCM
connector terminal J2–C2 and ground.
Is there a continuity?
Go to Step 19Go to Step 10

TRANSMISSION CONTROL SYSTEM (4L30–E)7A1–61
DTC P0758 Shift Solenoid B Electrical (Cont’d)
StepNo Ye s Action
91. Disconnect the transmission 16–way connector H–53.
2. Using the J39200 DVOM, measure the resistance between
terminals H53–16 and H53–15.
Is the resistance within 18–20 ohms?
Go to Step 20Go to Step 11
10Using the J39200 DVOM, check a continuity between PCM
connector terminal J3–E14 and ground.
Is there a continuity?
Go to Step 21Go to Step 12
111. Disconnect the transmission main case connector M–7.
2. Using the J39200 DVOM, measure the resistance between
terminals M7–1(A) and M7–4(C).
Is the resistance within 18 – 20 ohms?
Go to Step 22Go to Step 23
12Check every connection of the PCM and transmission 16–way
connector H–53.
Was a problem found and corrected?
Go to Step 25Go to Step 13
131. Connect the J2 (WHITE) and J3 (BLUE) PCM connectors to
the PCM.
2. Turn the ignition “on”, the engine “on”.
3. Repeat Step 3.
Does the scan tool display DTC P0758 at 3rd gear?
Go to Step 24
Go to Diagnostic
Aids
14The wiring harness between PCM connector terminal
J2–C2 and transmission main case terminal M7–1(A) is shorted
to voltage.
Was a problem found and corrected?
Go to Step 25—
15The PCM internal terminal J2–C2 is shorted to voltage.
Replace the PCM. Refer to Powertrain Control Module (PCM) in
Automatic Transmission (4L30–E) section.
Is the replacement complete?
Go to Step 25—
16The wiring harness between PCM connector and transmission
16–way connector is shorted.
Was a problem found and corrected?
Go to Step 25—
17The wiring harness between transmission 16–way connector and
transmission main case connector is shorted.
Was a problem found and corrected?
Go to Step 25—
18The shift solenoid B is faulty, or the internal wiring harness from
the shift solenoid B is shorted.
Was a problem found and corrected?
Go to Step 25—
19The wiring harness between PCM connector terminal
J2–C2 and transmission main case connector terminal M7–1(A)
is shorted to ground.
Was a problem found and corrected?
Go to Step 25—
20The wiring harness between PCM connector terminal J2–C2 and
transmission 16–way connector terminal H53–16, or between
PCM connector terminal J3–E14 and 16–way connector terminal
H53–15 is open.
Was a problem found and corrected?
Go to Step 25—

7A1–62
TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0758 Shift Solenoid B Electrical (Cont’d)
StepNo Ye s Action
21The wiring harness between PCM connector terminal J3–E14
and transmission main case connector terminal M7–4(C) is
shorted to ground.
Was a problem found and corrected?
Go to Step 25—
22The wiring harness between transmission 16–way connector
terminal H53–16 and transmission main case connector terminal
M7–1(A), or between H53–15 and M7–4(C) is open.
Was a problem found and corrected?
Go to Step 25—
23The internal wiring harness from the shift solenoid B is open, or
the shift solenoid B is faulty.
Was a problem found and corrected?
Go to Step 25—
24Replace the PCM.
Is the replacement complete?
Go to Step 25—
251. After the repair is complete, use the scan tool to select “DTC”,
then “Clear Info” function and operate the vehicle under the
following conditions:
The shift solenoid B is commanded “on” and voltage drop to
zero.
The shift solenoid B is commanded “off” and voltage
increases to B+.
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

TRANSMISSION CONTROL SYSTEM (4L30–E)7A1–65
DTC P1835 Kickdown Switch Always On
D07RW033
Circuit Description
When the driver presses the accelerator pedal down
fully, the kickdown switch closes, sending a ground
signal to the Powertrain Control Module (PCM).
This information is used to perform shifts at high
engine speed.
When the kickdown switch is closed, the Throttle
Position Sensor (TPS) is already is at 100%.
This DTC detects a closed kickdown switch when TP
angle is less than 70%.
This is a type “D” DTC.
Conditions For Setting The DTC
No TPS DTCs P0122 or P0123.
TP angle is less than 70%.
Kickdown switch is “on”.
All conditions met for 1 second.
Action Taken When The DTC Sets.
Kickdown mode control is off.
The PCM will not illuminate the CHECK TRANS
Lamp.
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 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 “off”
long enough to power down the PCM.
Diagnostic Aids
Check the wiring harness for a short to ground
between the PCM and kickdown switch.
Check the kickdown switch for failure.
Check kickdown adjustment.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart:
2. This test checks for short to ground or kickdown
switch failure.
4. This test checks for regulation kickdown switch.

7A1–68
TRANSMISSION CONTROL SYSTEM (4L30–E)
Diagnostic Aids
Inspect the wiring for poor electrical connection 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.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart:
3. This test checks for power to the brake band apply
solenoid from the ignition through the PCM.
4. This test checks the resistance of the transmission
internal wiring harness and brake band apply
solenoid.
5. This test checks the ability of the PCM and wiring to
control the ground circuit.
DTC P1850 Brake Band Apply Solenoid Malfunction
StepActionYe sNo
11. Install the scan tool.
2. With the engine “on”, 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 the “Clear Info”
function is used.
3. Record the DTC “Failure Records”.
Were DTCs P0753, P0758 set?
Go to Step 2Go to Step 3
2Using the J39200 DVOM, back probe between PCM connector
terminals J3–E14 and J2–C8.
Is the voltage between 10 to 12 volts?
Go to Step 4Go to Step 5
31. Turn the ignition “off”.
2. Disconnect the J1 (RED) and J3 (BLUE) PCM connectors.
3. Using the J39200 DVOM, measure the resistance between
PCM connector terminals J1–A16 and J3–E14.
Is the resistance within 10–12 ohms?
Go to Step 11Go to Step 12
4Using the J39200 DVOM, back probe between PCM connector
terminals J1–A16 and J2–C8.
Is the voltage between 10 to 12 volts?
Go to Step 25Go to Step 3
51. Turn the ignition “off”.
2. Disconnect the J1 (RED) and J3 (BLUE) PCM connectors.
3. Using the J39200 DVOM, check continuity between PCM
terminal J3–E14 and ground.
Is there a continuity?
Go to Step 6Go to Step 8
61. Disconnect the transmission 16–way connector H–53.
2. Using the J39200 DVOM, check continuity between connector
H53–13 and ground.
Is there a continuity?
Go to Step 7Go to Step 16
71. Disconnect the transmission main case connector M–7.
2. Using the J39200 DVOM, check continuity between the
terminal M7–2(B) and ground.
Is there a continuity?
Go to Step 17Go to Step 18
81. Disconnect the J1 (RED) PCM Connector.
2. Using the J39200 DVOM, measure the resistance between
PCM connector terminals J1–A16 and J3–E14.
Is the resistance within 10–12 ohms?
Go to Step 25Go to Step 9
91. Disconnect the transmission 16–way connector H–53.
2. Using the J39200 DVOM, measure the resistance between
terminal H53–13 and H53–15.
Is the resistance within 10–12 ohms?
Go to Step 16Go to Step 10

TRANSMISSION CONTROL SYSTEM (4L30–E)7A1–69
DTC P1850 Brake Band Apply Solenoid Malfunction (Cont’d)
StepNo Ye s Action
101. Disconnect the transmission main case connector M–7.
2. Using the J39200 DVOM, measure the resistance between
terminals M7–2(B) and M7–4(C).
Is the resistance within 10–12 ohms?
Go to Step 19Go to Step 20
11Using the J39200 DVOM, check continuity between PCM
terminal J1–A16 and ground.
Is there a continuity?
Go to Step 13Go to Step 25
121. Disconnect the transmission 16–way connector H–53.
2. Using the J39200 DVOM, measure the resistance between
terminal H53–13 and H53–15.
Is the resistance within 10–12 ohms?
Go to Step 23Go to Step 14
131. Disconnect the transmission 16–way connector H–53.
2. Using the J39200 DVOM, check continuity between terminal
H53–13 and ground.
Is there a continuity?
Go to Step 15Go to Step 21
141. Disconnect the transmission main case connector M–7.
2. Using the J39200 DVOM, measure the resistance between
terminals M7–2(B) and M7–4(C).
Is the resistance within 10–12 ohms?
Go to Step 24Go to Step 20
151. Disconnect the transmission main case connector M–7.
2. Using the J39200 DVOM, check continuity between the
terminal M7–2(B) and ground.
Is there a continuity?
Go to Step 17Go to Step 22
16The wiring harness between PCM terminal J3–E14 and
transmission 16–way connector terminal H53–15 is open.
Was a problem found and corrected?
Go to Step 26—
17The brake band apply solenoid is faulty, or the internal wiring
harness from the brake band apply solenoid is shorted to ground.
Was a problem found and corrected?
Go to Step 26—
18The wiring harness between the transmission 16–way connector
terminal H53–15 and the transmission main case connector
terminal M7–4(C) is shorted to ground.
Was a problem found and corrected?
Go to Step 26—
19The wiring harness between the transmission 16–way connector
terminal H53–15 and the transmission main case connector
terminal M7–4(C) is open.
Was a problem found and corrected?
Go to Step 26—
20The brake band apply solenoid is faulty, or the internal wiring
harness from the brake band apply solenoid is open.
Was a problem found and corrected?
Go to Step 26—
21The wiring harness between the PCM connector terminal J1–A16
and transmission 16–way connector terminal H53–13 is shorted
to ground.
Was a problem found and corrected?
Go to Step 26—
22The wiring harness between the transmission 16–way connector
terminal H53–13 and the transmission main case connector
terminal M7–2(B) is shorted to ground.
Was a problem found and corrected?
Go to Step 26—

7A1–70
TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P1850 Brake Band Apply Solenoid Malfunction (Cont’d)
StepNo Ye s Action
23The wiring harness between the PCM connector terminal J1–A16
and the 16–way connector terminal H53–13 is open.
Was a problem found and corrected?
Go to Step 26—
24The wiring harness between the transmission 16–way connector
terminal H53–13 and the transmission main case connector
terminal M7–2(B) is open.
Was a problem found and corrected?
Go to Step 26—
25Check every connection at the PCM.
If OK, replace the PCM. Refer to Powertrain Control Module
(PCM) in Automatic Transmission (4L30–E) section.
Is the replacement complete?
Go to Step 26—
261. After the repair is complete, use the scan tool to select “DTC”,
then “Clear Info” function and ensure the following conditions
are met:
The brake band apply solenoid is commanded “on” and the
volts drop to zero.
The brake band apply solenoid is commanded “off” and the
volts increase to B+.
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