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Oil Temperature Sensor Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 213 PID: P175 SPN: 175 FMI: 4 LAMP: Yellow SRT: 00-093 |
Low voltage detected at the oil temperature signal pin 6 of the sensor harness connector. | No engine protection for oil temperature. |
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Oil Temperature Sensor Circuit |
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Circuit Description
The oil temperature sensor monitors oil temperature and passes information to the electronic control module (ECM) through the sensor harness. If the oil temperature becomes too high and engine protection is enabled, a derate condition can be incurred, possibly leading to shutdown.
Component Location
- M11 – The oil temperature sensor is located on the engine block behind the ECM.
- N14 – The oil temperature sensor is located in the lubricating oil pump housing.
Shop Talk
The resistance of the sensor varies with the temperature. Compare your reading with this table.
| Temperature (°C) | Temperature [°F] | Resistance (ohms) |
| 0 | 32 | 30k to 36k |
| 25 | 77 | 9k to 11k |
| 50 | 122 | 3k to 4k |
| 75 | 167 | 1350 to 1500 |
| 100 | 212 | 600 to 675 |
Cautions and Warnings
 CAUTION
To reduce the possibility of pin and harness damage, use the following test leads when taking a measurement: |
|
CAUTION
To reduce the possibility of damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM. |
|
CAUTION
To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: |
|
CAUTION
To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: |
|
CAUTION
To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: |
|
CAUTION
To reduce the possibility of pin and harness damage, use this test lead when taking a measurement: |
Troubleshooting Steps
| STEPS | SPECIFICATIONS | |
|---|---|---|
| STEP 1. | Check for multiple fault codes. | |
| STEP 1A. Read the fault codes. | Fault Codes 123, 141, 145, 151, 154, 222, 352, and 422 are not active | |
| STEP 2. | Check the oil temperature sensor. | |
| STEP 2A. Inspect the oil temperature sensor and the sensor harness connector pins. | No damaged pins | |
| STEP 2B. Read the fault codes. | Fault Code 213 active | |
| STEP 2C. Check the resistance of the oil temperature sensor. | 175 ohms to 244k ohms | |
| STEP 2D. Check for a short circuit to ground. | More than 100k ohms | |
| STEP 3. | Check the sensor harness. | |
| STEP 3A. Inspect the harness and the ECM connector pins. | No damaged pins | |
| STEP 3B. Read the fault codes. | Fault Code 213 active | |
| STEP 3C. Check for an open circuit. | Less than 10 ohms | |
| STEP 3D. Check for a short circuit from pin to pin. | More than 100k ohms | |
| STEP 3E. Check for a short circuit to ground. | More than 100k ohms | |
| STEP 4. | Check for the ECM response. | |
| STEP 4A. Check for the appropriate ECM response. | Fault Code 213 inactive, Fault Code 212 active | |
| STEP 4B. Check the ECM signal pin resistance. | Less than 100k ohms | |
| STEP 5. | Clear the fault codes. | |
| STEP 5A. Disable the fault code. | Fault Code 213 inactive | |
| STEP 5B. Clear the inactive fault codes. | All fault codes cleared | |
Guided Step 1 – Check for multiple fault codes.
| Guided Step 1A – Read the fault codes. | |
|---|---|
Conditions
Action
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| OK | NOT OK |
| Fault Codes 123, 141, 145, 151, 154, 222, 352, and 422 are not active | Possible sensor failure, short circuit to ground in sensor positive (+) 5 VDC common supply, or short circuit from pin to pin. |
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Fault Code Multiple A
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Guided Step 2 – Check the oil temperature sensor.
| Guided Step 2A – Inspect the oil temperature sensor and the sensor harness connector pins. | |
|---|---|
Conditions
Action
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| OK | NOT OK |
| No damaged pins | Repair the damaged pins.
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| Guided Step 2B – Read the fault codes. | |
|---|---|
Conditions
Action
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| OK | NOT OK |
| Fault Code 213 active | Repair complete. |
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CAUTION
To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: |
| Guided Step 2C – Check the resistance of the oil temperature sensor. | ||
|---|---|---|
Conditions
Action
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| OK | NOT OK | |
| 175 ohms to 244k ohms | Replace the oil temperature sensor. Refer to Procedure 019-067. | |
| Guided Step 2D – Check for a short circuit to ground. | ||
|---|---|---|
Conditions
Action
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| OK | NOT OK | |
| More than 100k ohms | Replace the oil temperature sensor. Refer to Procedure 019-067. | |
Guided Step 3 – Check the sensor harness.
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CAUTION
To reduce the possibility of damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM. |
| Guided Step 3A – Inspect the harness and the ECM connector pins. | |
|---|---|
Conditions
Action
|
|
| OK | NOT OK |
| No damaged pins | Repair the damaged pins.
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| Guided Step 3B – Read the fault codes. | |
|---|---|
Conditions
Action
|
|
| OK | NOT OK |
| Fault Code 213 active | Repair complete. |
|
CAUTION
To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: |
| Guided Step 3C – Check for an open circuit. | ||
|---|---|---|
Conditions
Action
|
|
|
| OK | NOT OK | |
| Less than 10 ohms | Repair or replace the sensor harness. | |
|
CAUTION
To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: |
| Guided Step 3D – Check for a short circuit from pin to pin. | ||
|---|---|---|
Conditions
Action
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|
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| OK | NOT OK | |
| More than 100k ohms | Repair or replace the sensor harness. | |
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CAUTION
To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: |
| Guided Step 3E – Check for a short circuit to ground. | ||
|---|---|---|
Conditions
Action
|
|
|
| OK | NOT OK | |
| More than 100k ohms | Repair or replace the sensor harness. | |
Guided Step 4 – Check for the ECM response.
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CAUTION
To reduce the possibility of pin and harness damage, use the following test lead when taking a measurement: |
|
CAUTION
To reduce the possibility of damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM. |
| Guided Step 4A – Check for the appropriate ECM response. | ||
|---|---|---|
Conditions
Action
|
|
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| OK | NOT OK | |
| Fault Code 213 inactive . Fault Code 212 active | Replace the ECM. Refer to Procedure 019-031. | |
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CAUTION
To reduce the possibility of pin and harness damage, use this test lead when taking a measurement: |
|
CAUTION
To reduce the possibility of damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM. |
| Guided Step 4B – Check the ECM signal pin resistance. | |
|---|---|
Conditions
Action
|
|
| OK | NOT OK |
| Less than 100k ohms | Replace the ECM. Refer to Procedure 019-031. |
Guided Step 5 – Clear the fault codes.
| Guided Step 5A – Disable the fault code. | |
|---|---|
Conditions
Action
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| OK | NOT OK |
| Fault Code 213 inactive | Return to troubleshooting steps or contact your nearest Cummins Authorized Repair Location if all steps have been completed and checked again. |
| Guided Step 5B – Clear the inactive fault codes. | |
|---|---|
Conditions
Action
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| OK | NOT OK |
| All fault codes cleared | Troubleshooting any remaining active fault codes. |
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Repair complete
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Appropriate troubleshooting chart
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