Oil Temperature Too High

Oil temperature too high

Checking oil temperature

- Ignition on.
- Go into scrolling values.
- Read off transmission oil temperature.
Check that the transmission oil temperature is within its permitted range. Compare with the temperature of the transmission itself.

Is the oil temperature within its permitted range?

Yes - Checking cables and terminals

No - Checking oil temperature sensor signal cable

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Signal too low

Status message

Note! The following is required to obtain the correct status message before the diagnostic trouble code (DTC) can be read:

- Ignition on.
- Wait approximately 30 seconds.

- Read off the status of the diagnostic trouble code (DTC).

Is the status permanent?

Yes - Checking oil temperature sensor signal cable

No - Intermittent fault

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Checking oil temperature sensor signal cable

- Ignition off.
- Disconnect gray 2-pin transmission connector. For further information about connectors, see Transmission connectors Transmission Connectors.
Connect an ohmmeter between the gray 2-pin transmission connector terminal 2 (transmission side) and transmission housing.

Does the ohmmeter read infinite resistance?

OK - Checking oil temperature sensor resistance

Not OK - Checking for a short-circuit

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Checking for a short-circuit
Check cable between oil temperature sensor and gray 2-pin transmission connector terminal 2 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.

Was a fault detected?

Yes - Verification

No - Replacing component

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Checking oil temperature sensor resistance

- Ignition off.
- Gray 2-pin transmission connector disconnected.
Connect an ohmmeter between the gray 2-pin transmission connector terminals 1 and 2 (transmission side).
Compare the temperature below with the transmission temperature at the oil temperature sensor.

Does the ohmmeter show correct value? (See table)

Yes - Checking for a short-circuit

No - Replacing component

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Checking for a short-circuit
Check cable between gray 2-pin transmission connector:
- terminal 2 and control module #34 (Fenix 5.1)
- terminal 2 and control module #33 (EMS 2000)
for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.

Continue - Verification

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Replacing component
Try a new oil temperature sensor according to Replacing oil temperature sensor Service and Repair.

Continue - Verification

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Verification

Verification

Hint: After repairs have been completed they must be verified as follows to ensure that the fault has been eliminated:

- Ignition off.
- Reconnect the connectors, reinstall components etc.
- Ignition on.

- Wait approximately 30 seconds.
- Read off the status of the diagnostic trouble code (DTC).

Is the status intermittent?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information

Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Status message

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Intermittent fault

Signal too low. Intermittent fault

Intermittent fault
Check the cable between the oil temperature sensor and the control module:
- terminal 34 (Fenix 5.1)
- terminal 33 (EMS 2000)
for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.

Continue - Fault-tracing information

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Fault-tracing information

Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Do you want to view the information again?

Yes - Attempt New Test

No - FAULT FOUND

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Attempt New Test - Status message

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FAULT FOUND - Verification

FAULT-TRACING FAILED - Verification

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Checking oil temperature sensor signal cable

The ohmmeter should read infinite resistance.

OK - Checking oil temperature sensor resistance

Not OK - Checking for a short-circuit

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Checking for a short-circuit
Check cable between oil temperature sensor and transmission connector terminal 2 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.

Was a fault detected?

Yes - Verification

No - Replacing component

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Checking oil temperature sensor resistance

Does the ohmmeter show correct value? (See table)

Yes - Checking for a short-circuit

No - Replacing component

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Checking for a short-circuit
Check cable between transmission connectors:
- terminal 2 and control module #34 (Fenix 5.1)
- terminal 2 and control module #33 (EMS 2000)
for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.

Continue - Verification

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Replacing component

- Ignition off.
Try a new oil temperature sensor according to Replacing oil temperature sensor Service and Repair.

Continue - Verification

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Checking cables and terminals
Check cable between oil temperature sensor and control module:
- #34 (Fenix 5.1)
- #33 (EMS 2000)
for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.

Continue - Checking the transmission

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Checking the transmission

- Ignition off.
- Install gray 2-pin transmission connector.
The diagnostic trouble code (DTC) may have been caused by the transmission being subjected to high loads and high temperatures. Therefore it is important to change the oil and check the operation of the transmission.
- Change oil according to Oil, changing Changing Oil.
- Test-drive the car as described in Test Drive Form, description Test Drive Form, Description , to check that there are nomechanical faults.

Does the transmission have any mechanical faults?

Yes - Repairing mechanical faults

No - Fault-tracing information

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Fault-tracing information
Transmission is OK.

Continue - FAULT FOUND

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Repairing mechanical faults
Terminate current fault-tracing. Add mechanical symptoms to the symptoms list and fault-trace the symptoms. If the transmission oil has not already been changed during corrective action, change according to Oil, changing Changing Oil.

Continue - FAULT FOUND

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Verification

Verification

Hint: After repairs have been completed they must be verified as follows to ensure that the fault has been eliminated:

- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
- Go into scrolling values.
- Read off the transmission oil temperature.
Check that the transmission oil temperature is within its permitted range. Compare with the temperature of the transmission itself.

Is the oil temperature within its permitted range?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information
Information
Attempt New Test - Checking oil temperature

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