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Home >> Volvo >> 1995 >> 850 T-5R L5-2.3L Turbo VIN 58 B5234T5 >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> AT / DTC Codes (Transmission Control Module) >> DTC 114

DTC 114



EAD. Code 1-1-4

1-1-4 Break in mode selector circuit

DTC information


Conditions for DTC






The driving mode selector allows the driver to select from three modes: Winter (W), Economy (E) and Sport (S). The mode selector has two signal wires, MS1 and MS2, and a ground wire. The choice between W, E and S modes is made through the connection of either one or the other, or both signal wires to ground (the signal goes low). Note that MS1 and MS2 signal wires are grounded simultaneously only when the W button is depressed.

- battery voltage
- ground (U low)


If the TCM registers that the signal is high (high voltage) in both signal wires simultaneously for at least 30 seconds, the DTC 1-1-4 is set.

Note: This means that the code can be set if the E and S buttons are in a "mid-position" for longer than 30 seconds.

Substitution value

The transmission will only operate in driving mode Economy (E).

Defect Cause

- Break in the signal wires or ground wire.
- The E and S buttons have been in the "mid-position" for more than 30 seconds.
- Defective mode selector
- Contact resistance in connections

Fault Symptom

- The transmission operates in driving mode E.
- Fault-tracing starts with EAD1.



EAD1

Checking Driving Mode Selector







- Ignition ON
- Set gearshift selector to position P

Check that all positions of the driving mode selector are operative by using Diagnostic Test Mode 2.

If all positions are OK:
- Intermittent fault. Fault-tracing as per EAD1O.

If some of the positions are not operative:
- Check the driving mode selector connection EAD2.



EAD2

Checking the driving mode selector connection






- Ignition OFF
- Remove the driving mode selector from the panel as per AA1-AA2.
- Check the selector is properly connected to the connector.

If the selector is connected:
- Checking ground cable EAD3.

If the selector is not connected:
- The DTC was set because the driving mode selector was not connected.
- Connect the driving mode selector.

EAD3

Checking ground cable






- Ignition OFF
- Turn off all equipment in the car that takes power from the battery, e.g. interior lighting and radio.
- Disconnect the driving mode selector.

Connect ohmmeter between the connector terminal 5 on the selector and ground.
The reading obtained should show approx. 0 Ohms.

If reading is OK:
- Checking the signal cable (MS 1) EAD4.

If reading is incorrect:
- Check ground point 31/15 and the cable between the driving mode selector connector terminal 5 and ground point 31/15 for breaks as per FA2 and contact resistance and oxidation as per FA6. FA. Checking Wiring and Connections



EAD4

Checking signal wiring (MS1)






- Driving mode selector disconnected.
- Ignition ON.

Connect a voltmeter between the connector terminals 3 and 5 on the selector.
The voltmeter should register approx. 1 V below battery voltage.

If reading is OK:
- Checking signal cable (mS2) EAD6.

If the voltmeter reads approx. 0 V:
- Checking the control module connector EAD5.

If the voltmeter reads approx. battery voltage:
- Check the cable between the mode selector's connector terminal 3 and the TCM #B17 for short circuit to supply as per FA4. FA. Checking Wiring and Connections

Then continue by: Checking the driving mode selector operation EAD9.



EAD5

Checking the TCM connector






- Ignition OFF

Correct problems with contact resistance and oxidation in the TCM connector and connectors 24/2 and 24/7 as per FA6. FA. Checking Wiring and Connections

- TCM connected
- Driving mode selector disconnected.
- Ignition ON.






Connect a voltmeter between the connector terminals 3 and 5 on the selector.
The voltmeter should register approx. 1 V below battery voltage.

If reading is OK:
- The DTC was set because of poor contact in the connector.






If reading is incorrect:
- Check the cable between the mode selector connector terminal 3 and TCM #B1 7 for breaks in the circuit as per FA2. FA. Checking Wiring and Connections



EAD6

Checking signal wiring (MS2)






- Driving mode selector disconnected.
- Ignition ON.

Connect a voltmeter between the connector terminals 2 and 5 on the selector.
The voltmeter should register approx. 1 V below battery voltage.

If reading is OK:
- Checking the driving mode selector's resistance EAD8.

If the voltmeter reads approx. 0 V:
- Checking the control module's connector EAD7.

If the voltmeter reads approx. battery voltage:
- Check the cable between the mode selector's connector terminal 2 and the TCM #B16 for short circuit to supply as per FA4. FA. Checking Wiring and Connections

Then continue by: Checking the driving mode selector operation EAD9.


EAD7

Checking the TCM connector

- Ignition OFF

Correct problems with contact resistance and oxidation in the TCM connector and connectors 24/2 and 24/7 as per FA6. FA. Checking Wiring and Connections

- TCM connected
- Driving mode selector disconnected.
- Ignition ON.






Connect a voltmeter between the connector terminals 2 and 5 on the selector.
The voltmeter should register approx. 1 V below battery voltage.

If reading is OK:
- The DTC was set because of poor contact in the connector.






If reading is incorrect:
- Check the cable between the mode selector connector terminal 2 and TCM #B16 for breaks in the circuit as per FA2. FA. Checking Wiring and Connections



EAD8

Checking the driving mode selector's resistance






- Ignition OFF
- Driving mode selector disconnected.

Connect an ohmmeter between the driving mode selector's connector terminals:

- 3 and 5 with the mode selector in position S
- 2 and 5 with the mode selector in position E

The ohmmeter should read approx. 0 Ohms.

If reading is OK:
The DTC was set because of poor contact in the mode selector's connector. Check the mode selector's connector for loose connections as per FA5, and contact resistance and oxidation as per FA6. FA. Checking Wiring and Connections

If reading is incorrect:
Try a new driving mode selector module as per AA1-AA2



EAD9

Checking the driving mode selector's operation






The driving mode selector can malfunction due to a short circuit to supply in the signal wiring. Check the mode selector as follows:

- Ignition OFF
- Driving mode selector disconnected.

Connect an ohmmeter between the driving mode selector's connector terminals:

- 3 and 5 with the mode selector in position S
- 2 and 5 with the mode selector in position E

The ohmmeter should read approx. 0 Ohms.

If reading is incorrect:
- Try a new driving mode selector module as per AA1- AA2.



EAD1O

Intermittent Fault.

Checking wiring and connections






- Check the transmission control module (TCM) and mode selector connectors for loose connections as per FA5, and contact resistance and oxidation as per FA6. FA. Checking Wiring and Connections

- Check the cable between the mode selector's connector terminal 3 and the TCM #B17 for intermittent break as per FA2 and intermittent short circuit to supply as per FA4.


- Check the cable between the mode selector's connector terminal 2 and the TCM #816 for intermittent break as per FA2 and intermittent short circuit to supply as per FA4.






- Check the cable between the mode selector connector terminal 5 and ground point 31/15 for intermittent breaks as per FA2.

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