Opel Frontera UE. Manual - part 1611

7A1–66 TRANSMISSION CONTROL SYSTEM (4L30–E)

DTC P1860/Flashing Code 89 TCC Solenoid Electrical 

Step

Action

Yes

No

1

1. 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”.

Was DTC P1860 set?

Go to 

Step 2

Go to 

Step 3

2

Using the J39200 DVOM, back probe between PCM connector
terminals E22–51 and E22–33.

Is the voltage 0?

Go to 

Step 4

Go to 

Step 5

3

1. Apply brake pedal and select transmission range “D”.
2. Do a test drive, and increase the vehicle speed to TCC “on” at

4th.

Does the scan tool display DTC P1860 at TCC “ON”?

Go to 

Step 8

Go to 

Diagnostic
Aids

4

1. Turn the ignition “off”.
2. Disconnect the E–22 (J2, RED) PCM connector.
3. Using the J39200 DVOM, measure the resistance between

PCM connector terminals E22–51 and E22–33.

Is the resistance within 18 – 20 ohms?

Go to 

Step 6

Go to 

Step 7

5

The wiring harness between PCM connector terminal E22–51
and transmission adapter case connector terminal E52–1(A) is
shorted to voltage.

Was a problem found and corrected?

Go to 

Step 14

Go to 

Step 15

6

Intermittent condition.
Check the wiring harness and terminals between PCM connector
J2 and transmission adapter case connector E–52.

Was a problem found and corrected?

Go to 

Step 14

Go to 

Step 15

7

1. Disconnect the transmission adapter case connector E–52.
2. Using the J39200 DVOM, measure the resistance between

terminal E52–1(A) and ground.

Is the resistance within 18 – 20 ohms?

Go to 

Step 12

Go to 

Step 13

8

1. Turn the ignition “off”.
2. Disconnect the E–22 (J2, RED) PCM connector.
3. Using the J39200 DVOM, measure the resistance between

terminals E22–51 and E22–33.

Is the resistance within 18 – 20 ohms?

Go to 

Step 14

Go to 

Step 9

9

1. Disconnect the transmission adapter case connector E–52.
2. Using the J39200 DVOM, measure the resistance between

terminal E52–1(A) and ground.

Is the resistance within 18–20 ohms?

Go to 

Step 10

Go to 

Step 11

10

The wiring harness between PCM connector E22 and adapter
case connector E–52 is shorted to ground.

Was a problem found and corrected?

Go to 

Step 16

—

11

The TCC solenoid is faulty, or the internal wiring harness from the
TCC solenoid is shorted to ground.

Was a problem found and corrected?

Go to 

Step 16

—

SECTION

TRANSMISSION CONTROL SYSTEM (4L30–E)

7A1–67

DTC P1860/Flashing Code 89 TCC Solenoid Electrical  (Cont’d)

Step

No

Yes

Action

12

The wiring harness between PCM connector terminal E22–51
and adapter case terminal E52–1(A) is open.

Was a problem found and corrected?

Go to 

Step 16

—

13

The TCC solenoid is faulty, or the internal wiring harness from the
TCC solenoid is open.

Was a problem found and corrected?

Go to 

Step 16

—

14

Check 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 16

—

15

Check the PCM connector terminal E22–51, and transmission
adapter case connector terminal E52–1(A).

Was a problem found and corrected?

Go to 

Step 16

—

16

1. After the repair is complete, use the scan tool to select “DTC”,

then “Clear Info” function and ensure the following conditions
are met:

D

The TCC solenoid is commanded “on” and the volts increase
to B+.

D

The TCC solenoid is commanded “off” and the volts drop to
zero.

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

SECTION

7A1–68 TRANSMISSION CONTROL SYSTEM (4L30–E)

Circuit Diagram

D07R100036

SECTION

TRANSMISSION CONTROL SYSTEM (4L30–E)

7A1–69

D07R100037

SECTION