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Home >> Volvo >> 1998 >> S90 L6-2.9L VIN 96 B6304S >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> AT / DTC Codes (Transmission Control Module) >> AT-222 Shift Solenoid S2 >> Fault In Solenoid Circuit

Fault In Solenoid Circuit





Checking Solenoid S2
- Ignition ON.
- Move gear selector to position P.
- Activate solenoid S2. Read off the solenoid status. The status should alternate between OFF/ON.
- Does the status alternate between OFF/ON?

Yes:
- Proceed to: Intermittent Fault section below.

No:
- Proceed to: Checking Power Ground section below.





Checking Power Ground
- Ignition OFF.
- Connect the test box and check ground terminals. Check the power ground carefully.
- The ohmmeter should read approx. 0 Ohms if the power ground is OK.

If reading is OK:
- Proceed to: Checking Resistance In Solenoid S2 Circuit section below.

If reading is incorrect:
- Proceed to: Fault-tracing Information section below.

Fault-tracing Information
- The diagnostic trouble code (DTC) has been caused by a poor power ground.
- Proceed to: Verification section below.





Checking Resistance In Solenoid S2 Circuit
- Ignition OFF.
- Engine control module (ECM) disconnected.
- Connect an ohmmeter between # 31 and # 15 on test box.
- The ohmmeter should read 12-18 Ohms.

If reading is OK:
- Proceed to: Checking Signal Cable For Short-circuit To Supply Voltage section below.

If reading is incorrect:
- Proceed to: Checking Signal Cable section below.





Checking Signal Cable
- Ignition OFF.
- Raise the car to access the transmission.
- Carefully clean round connector D.
- Disconnect transmission connector D.
- Connect an ohmmeter between transmission connector D terminal 2 (transmission control module (TCM) side) and # 31 on the test box.
- The ohmmeter should read approx. 0 Ohms.

If reading is OK:
- Proceed to: Checking Solenoid S2 Circuit In The Transmission section below.

If reading is incorrect:
- Proceed to: Checking For An Open-circuit section below.





Checking For An Open-circuit
- Ignition OFF.
- Check cable between transmission connector terminal 2 and transmission control module # 31 for an open-circuit.
- Proceed to: Verification section below.





Checking Solenoid S2 Circuit In The Transmission
- Ignition OFF.
- Transmission connector D disconnected.
- Connect an ohmmeter between transmission connector D terminal 2 (transmission side) and transmission housing.
- The ohmmeter should read 12-18 Ohms.

If reading is OK:
- Proceed to: Checking For Loose Connections And Contact Resistance section below.

If reading is incorrect:
- Proceed to: Checking Resistance In Solenoid S2 section below.





Checking For Loose Connections And Contact Resistance
- Ignition OFF.
- The diagnostic trouble code was caused by loose connections in the transmission connector. Check the transmission and transmission control module connectors for loose connections and remedy and contact resistance and oxidation.
- Proceed to: Verification section below.





Checking Resistance In Solenoid S2
- Ignition OFF.
- Open the control system.
- Disconnect solenoid S2.
- Use an ohmmeter to measure between the pin on solenoid S2 and the transmission housing.
- The ohmmeter should read 12-18 Ohms.

If reading is OK:
- Proceed to: Checking For An Open-circuit section below.

If reading is incorrect:
- Proceed to: Replacing Component section below.





Checking For An Open-circuit
- Check cable between solenoid S2 and transmission connector D terminal 2 for an open-circuit.
- Proceed to: Verification section below.





Replacing Component
- Ignition OFF.
- Try a new solenoid S2.
- Proceed to: Verification section below.





Checking Signal Cable For Short-circuit To Supply Voltage
- Ignition OFF.
- Transmission control module disconnected.
- Ignition ON.
- Connect a voltmeter between # 31 and # 1 on the test box.
- The voltmeter should read approx. 0 Volts.

If reading is OK:
- Proceed to: Checking Voltage Drop Over Signal Ground And Power Ground section below.

If reading is incorrect:
- Proceed to: Checking For A Short-circuit To Supply Voltage section below.





Checking For A Short-circuit To Supply Voltage
- Check cable between solenoid S2 and transmission control module # 31 for a short-circuit to supply voltage.
- Proceed to: Verification section below.





Checking Voltage Drop Over Signal Ground And Power Ground
- Ignition OFF.
- Connect transmission control module.
- Ignition ON.
- Turn on as many power consuming items as possible.
- Connect a voltmeter between # 15 and # 1 on the test box.
- The voltmeter should read less than 0.6 Volts.

If reading is OK:
- Proceed to: Checking Transmission Control Module section below.

If reading is incorrect:
- Proceed to: Checking For Open-circuit, Contact Resistance And Oxidation section below.





Checking For Open-circuit, Contact Resistance And Oxidation
- Ignition OFF.
- Check ground terminals 31/53 and 31/66, cables between ground terminals and transmission control module # 15 and # 1 and transmission control module connector for an open-circuit and contact resistance and oxidation.
- Proceed to: Verification section below.





Checking Transmission Control Module
- Ignition OFF.
- Disconnect test box.
- Connect transmission control module.
- Ignition ON.
- Erase diagnostic trouble code.
- Gear selector in position P.
- Start the engine.
- Wait for about 15 seconds.
- Check to see if the diagnostic trouble code recurs.
- Does the diagnostic trouble code recur?

Yes:
- Proceed to: Replacing Component section below.

No:
- Proceed to: Checking For Contact Resistance And Oxidation section below.





Replacing Component
- Try a new transmission control module.
- Proceed to: Verification section below.





Checking For Contact Resistance And Oxidation
- Ignition OFF.
- The diagnostic trouble code was caused by loose connections in the transmission control module connector. Check engine control module connector for contact resistance and oxidation and remedy.
- Proceed to: Verification section below.





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

- Ignition OFF.
- Reinstall components, connectors etc.
- Ignition ON.
- Read off solenoid S2 status. Status should alternate between OFF/ON.
- Does the solenoid status alternate between OFF/ON?

Yes:
- Fault corrected.

No:
- Proceed to: Fault-tracing Information section below.

Fault-tracing Information
The verification result shows that the fault persists.

- Do you want to exit fault-tracing?

Yes:
- Fault not corrected.

No:
- Proceed to: Checking Solenoid S2 section above.





Intermittent Fault
- Check transmission and transmission control module connectors for loose connections and contact resistance and oxidation.
- Check cable between solenoid S2 and transmission control module # 31 for an intermittent open-circuit and an intermittent short-circuit to supply voltage.
- Check cable between ground terminal 31/66 and transmission control module # 1 for an intermittent open-circuit.
- Check ground terminal 31/66 for contact resistance and oxidation.
- Check the cable between the positive terminal on the battery and transmission control module # A29 for an intermittent open-circuit.
- Proceed to: Fault-tracing Information section below.

Fault-tracing Information
For intermittent faults fault-tracing is not followed by a verification because the fault is not present at this moment,

- Do you want to repeat fault-tracing?

Yes:
- Proceed to: Checking Solenoid S2 section above.

No:
- Operation done.
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