DTC 222

EAU. Code 2-2-2

2-2-2 Break in solenoid S2 circuit

DTC information

Conditions for DTC







Solenoid S2 works with solenoid S1 to actuate transmission gear-shifting. Solenoid S2 operates when battery voltage is applied from the transmission control module (TCM) and is activated in 1st and 2nd gears. If the TCM registers a break on the solenoid S2 circuit when the solenoid should not be activated, DTC 2-2-2 is set. Solenoid S1 cannot then be activated.


Substitution value

Control Modules GROUP I:
The TCM "Emergency mode" program has been initiated and the transmission operates only in 3rd and 4th gears.

Control Modules GROUP II:
The TCM "Limp-home" program has been initiated and the transmission operates only in 4th gear.


Defect cause

- Break in signal wiring
- Malfunction in solenoid
- Contact resistance in connections.


Fault symptom

- Poor performance due to the transmission operating in 3rd or 4th gears or operating only in 4th gear
- Rough gear shifting due to maximum system pressure in the transmission (Emergency mode)
- No Lock-up function (Emergency mode).

- Fault-tracing starts with EAU1.



EAU1

Checking solenoid S2






- Ignition ON.
- Set gearshift selector to position P.

Check solenoid S2 using Diagnostic Test Mode 4. Diagnostic Test Mode 4 Use a stethoscope to hear the clicking noise made by the solenoid more clearly.

If solenoid is operating:
- Intermittent fault. Fault-tracing as per EAU6.

If the solenoid is not operating:
- Checking resistance in solenoid S2 circuit EAU2.



EAU2

Checking resistance in solenoid S2 circuit






- Ignition OFF
- Connect test box and check ground points as per GB1-GB2 GB. Connecting the Test Box

- TCM disconnected.

Use an ohmmeter to measure between #28 (#A28) and #20 (#A20) on the test box.
The ohmmeter should read 10-15 Ohms.






If reading is OK:
- The DTC was set because of poor contact in the TCM connector. Check and correct any loose connections in the connector as per FA5, and contact resistance and oxidation as per FA6. FA. Checking Wiring and Connections

If reading is incorrect:
- Checking signal wiring EAU3.


EAU3

Checking signal wiring






- Ignition OFF
- Remove the air cleaner (ACL) housing to access the transmission connector
- Disconnect the transmission connector.

Connect an ohmmeter between the transmission connector terminal 22 (TCM side) and #28 (#A23) on the test box.

The ohmmeter should read approx. 0 Ohms.

If reading is OK:
- Checking solenoid S2 circuit in the transmission EAU4

If reading is incorrect:
- Check the cable between the transmission connector terminal 22 and TCM #A28 for breaks in the circuit as per FA2. FA. Checking Wiring and Connections



EAU4

Checking solenoid S2 circuit in the transmission






- Ignition OFF
- Disconnect transmission connector.

Connect an ohmmeter between the transmission connector terminal 22 (transmission side) and ground.

The ohmmeter should read 10-15 Ohms.

If reading is OK:
- The DTC was set because of poor contact in the transmission connector. Check and correct the transmission connector and the TCM connector for loose connections as per FA5, and contact resistance and oxidation as per FA6. FA. Checking Wiring and Connections

If reading is incorrect:
- Checking resistance in solenoid S2 EAU5.


EAU5

Checking resistance in solenoid S2






- Ignition OFF
- Open the control system, as per R1-R13.
- Disconnect solenoid S2.

Use an ohmmeter to measure between the pin on solenoid S2 and the transmission housing.

The ohmmeter should read 10-15 Ohms.

If reading is OK:
- Check the cable between the solenoid S2 and transmission connector terminal 22 for breaks in the circuit as per FA2. FA. Checking Wiring and Connections

If replacing cable harness, refer to R49-R57.

If reading is incorrect:
- Try a new solenoid S2 as per R20.



EAU6

Intermittent fault

Checking wiring and connections






- Check the connectors for the transmission and the transmission control module (TCM) for loose connections as per FA5, and contact resistance and oxidation as per FA6. FA. Checking Wiring and Connections

- Check the wiring between solenoid S2 in the transmission and TCM #A28 for intermittent short circuit as per FA2.