Signal Too Low
Signal too low
Status message
Note! To obtain the correct status message:
- Ignition on.
- Wait approx. 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.
- Remove the air cleaner (ACL) housing to access the transmission connector.
- Disconnect the transmission connector.
Connect an ohmmeter between transmission connector terminal 12 (transmission side) and the 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
- Ignition off.
- Transmission connector disconnected.
Check cable between oil temperature sensor and transmission connector terminal 12 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
If the cable is OK: Try a new oil temperature sensor according to Replacing the oil temperature sensor Replacing the Oil Temperature Sensor.
Select "Continue" when the fault has been repaired.
Continue - Verification
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Checking oil temperature sensor resistance
- Ignition off.
- Transmission connector disconnected.
Connect an ohmmeter between the transmission connector terminals 12 and 13 (transmission side).
Compare the temperature below with the transmission temperature at the oil temperature sensor.
Does the ohmmeter read approx. 765-1035 ohms at +20°C (see table)?
Yes - Checking cable
No - Replacing component
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Checking cable
- Ignition off.
- Transmission connector disconnected.
Check cable between transmission connector terminal 12 and transmission control module (TCM) #A14 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select "Continue" when the fault has been repaired.
Continue - Verification
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Replacing component
- Ignition off.
- Transmission connector disconnected.
Try a new oil temperature sensor according to Replacing the oil temperature sensor Replacing the Oil Temperature Sensor.
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 approx. 30 seconds.
- Read off the diagnostic trouble code (DTC) status.
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 transmission control module (TCM) #A14 for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Select "Continue" when the fault has been repaired.
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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