Opel Frontera UBS. Service manual — part 2598
TRANSMISSION CONTROL SYSTEM (4L30–E)
7A1–43
DTC P0713 Transmission Fluid Temperature (TFT) Sensor Circuit High Input (Cont’d)
Step
No
Yes
Action
8
Replace TFT sensor. Refer to Transmission Oil Temperature
Sensor (Adapter Case) in Automatic Transmission (4L30–E)
section.
Is the replacement complete?
Go to Step 13
—
9
Check circuit RED/BLK–GRN/RED for an open or short to B+.
Was a problem found?
Go to Step 13
Go to Step 10
10
Check circuit GRY–GRN for an open.
Was a problem found?
Go to Step 13
Go to Step 11
11
Check the PCM for faulty or intermittent connections.
Was a problem found?
Go to Step 13
Go to Step 12
12
Replace the PCM. Refer to Powertrain Control Module (PCM) in
Automatic Transmission (4L30–E) section.
Is the replacement complete?
Go to Step 13
—
13
1. After the repair is complete, use the scan tool to select “DTC”,
then “Clear Info” function and ensure the following conditions
are met:
2. TFT sensor indicates a voltage less than 4.92 volts for 2
seconds.
3. 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
7A1–44 TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0719 TCC Brake Switch Circuit High (Stuck On)
D07RW032
Circuit Description
The TCC brake switch is used to indicate brake pedal
status. The normally opened brake switch signal voltage
circuit is opened.
Brake switch supplies a B+ signal on circuit GRN/YEL to
the PCM when the brakes are applied. The PCM uses
this signal to deenergize the TCC solenoid when the
brakes are applied.
This DTC detects a closed brake switch during
accelerations. This is a type “D” DTC.
Conditions For Setting The DTC
D
No OSS DTCs P0722 or P0723.
D
The PCM detects a closed brake switch/circuit (12
volts) for 2 seconds, and the following events occur
seven consecutive times: vehicle speed is less than 8
km/h (5 mph); then vehicle speed is between 8 and 32
km/h (5 and 20 mph) for 4 seconds; then vehicle
speed is greater than 32 km/h (20 mph) for 4 seconds.
Action Taken When The DTC Sets
D
If throttle opening is greater than 10% and vehicle
speed is greater than 45 km/h (28 mph), then
disregard brake switch contingency for TCC off
mode.
D
The PCM will not illuminate the CHECK TRANS
Lamp.
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
Inspect the wiring for poor electrical connections at
the PCM and TCC brake switch. 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 customer driving habits and/or unusual driving
conditions (i.e. stop and go, highway).
D
Check brake switch for proper mounting and
adjustment.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart:
2. This test checks for voltage at the brake switch.
5. This test checks the brake switch.
8. This test checks circuit GRN/YEL at the PCM.
TRANSMISSION CONTROL SYSTEM (4L30–E)
7A1–45
DTC P0719 TCC Brake Switch Circuit High (Stuck On)
Step
Action
Yes
No
1
1. Install the scan tool.
2. With the engine “off”, turn the ignition switch “on”. If ABS code
is set, check applicable fuse.
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”.
4. Apply then release the brake pedal.
Does the scan tool display “TCC Brake Switch” as “closed” with
the brake pedal applied, and then display “open” when the brake
pedal is released?
Go to Diagnostic
Aids
Go to Step 2
2
1. Connect the test light to ground.
2. Back probe ignition feed circuit terminal B13–1 at the brake
switch.
Is the test light “on”?
Go to Step 3
Go to Step 4
3
1. Connect the test light to ground.
2. Back probe circuit terminal B13–4 at the brake switch.
Is the test light “off”?
Go to Step 7
Go to Step 5
4
Repair the open in battery feed circuit terminal B13–1 to the brake
switch.
If fuse is open, check circuit terminal B13–4 for a short to ground.
Is the repair complete?
Go to Step 13
—
5
Disconnect brake switch connector B–13 and ignition switch “on”.
Is the test light “on”?
Go to Step 8
Go to Step 6
6
Check the brake switch short (B13–1 and B13–4).
Was a problem found?
Go to Step 9
Go to Step 10
7
Check circuit terminal B13–4 for a short to voltage.
Ignition switch “on”.
Is the test light “on”?
Go to Step 8
Go to Step 10
8
1. Disconnect the J3 (BLUE) PCM connector.
2. Check circuit terminal B13–4 for a short to voltage.
Was a problem found?
Go to Step 13
Go to Step 10
9
Replace the brake switch.
Is the replacement complete?
Go to Step 13
—
10
1. Turn the ignition “off”.
2. Reconnect the J3 (BLUE) PCM connector.
3. Turn the ignition “on”.
Does the scan tool display “TCC Brake Switch” as “open” with the
brake applied, then display “closed” with the brake pedal
released?
Go to Diagnostic
Aids
Go to Step 11
11
Check the PCM for faulty or intermittent connections.
Was a problem found and corrected?
Go to Step 13
Go to Step 12
7A1–46 TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0719 TCC Brake Switch Circuit High (Stuck On) (Cont’d)
Step
No
Yes
Action
12
Replace the PCM. Refer to Powertrain Control Module (PCM) in
Automatic Transmission (4L30–E) section.
Is the replacement complete?
Go to Step 13
—
13
1. After the repair is complete, use the scan tool to select “DTC”,
then “Clear Info” function and ensure the following conditions
are met:
The PCM brake switch signal must indicate 0 volts for 1
seconds with the brake pedal applied.
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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