DTC 222

EE. DTC 2-2-2
2-2-2 Open-circuit solenoid S2 circuit

Principle of operation

Solenoid S2 performs gearshifting in combination with solenoid S1. The solenoid operates when supplied with battery voltage from the TCM, which delivers an upshifting or downshifting signal depending on the speed of the car and the selected driving mode.

Fault description

An open-circuit is present in the solenoid S2 circuit, interrupting the supply to the solenoid and preventing gearshifting. The emergency limp-home program is activated and the transmission operates only in 4th gear. The MIL on the panel lights.
Troubleshooting should indicate if open-circuit is in leads, in solenoid itself or in TCM.





Circuit description

The circuit consists of the TCM, three connectors and solenoid S2 in the transmission.





1
Testing solenoid S2 In test mode 4

- Move gear selector to position P.

Test solenoid S1 in test mode 4 use stethoscope to hear solenoid click more clearly. Displaying & Reading Trouble Codes

- If solenoid does not click, fault is permanent.
- If solenoid clicks, fault is occurring only intermittently under particular conditions, making it considerably more difficult to locate.





2
Measuring resistance of solenoid and wiring

- Switch off ignition.
- Connect break-out box to wiring.

Measure resistance between # 9 (82) and # 12 (SG) with ohmmeter.

- If instrument indicates 10-15 Ohm, solenoid and leads are OK.

In this case, DTC is due to intermittent fault. Check leads and connectors for open-circuits and poor connections as described in Testing and Inspection, General Tests Component Tests and General Diagnostics and Return to Testing and Inspection. Diagnostic Procedures

- If instrument indicates other value, proceed to next step.





3
Measuring solenoid resistance

- Switch off ignition.
- Measure at connector E on transmission (solenoid side).

Connect ohmmeter between terminal 2 and ground terminal on transmission.

- If instrument indicates under 10 Ohm or over 15 Ohm, solenoid S2 or wiring between solenoid and connector on transmission is faulty. proceed to next step.

- If instrument indicates 10-15 Ohm, solenoid and wiring harness are OK. Return to Testing and Inspection. Diagnostic Procedures

TCM may be faulty if DTC is again displayed after test driving although test indicates that resistance is correct.

4
Measuring resistance of control system

- Remove Transmission pan to gain access to Solenoids.
- Disconnect solenoid S2 connector.

Measure resistance between pin on solenoid S2 and ground terminal on transmission. Instrument should indicate 10-15 Ohm.

- If instrument indicates 10-15 Ohm, solenoid is OK. In that case, fault is in wiring between solenoid and connector E. Replace harness.
- If instrument indicates different value, solenoid is faulty. Replace solenoid and return to Testing and Inspection. Diagnostic Procedures