DTC 322

FD. DTC 3-2-2
3-2-2 Incorrect gearshift ratio

Principle of operation

The TCM computes the ratio between the transmission input shaft speed and the speed of the car. A specific ratio exists for each gear and DTC 3-2-2 is recorded if the signals do not correspond.

Note!
The transmission speed signal is not available in 4th gear when clutch C0 is idle.

Fault description

Note!
The DTC applies only to 1991 models.

The DTC indicates a mechanical fault in the transmission and can hardly be caused by a control system fault. The fault may occur shortly after starting at extremely low temperatures. The MIL lights, the TCM limp-home emergency program is activated and the transmission operates only in 4th gear.





1
The DTC indicates a mechanical fault in the transmission

Some transmission component is becoming worn and causing low line pressure. A fault of this type usually takes the form of noise or other obvious mechanical malfunction.

2
Erase DTCs

Start by erasing DTCs as described in Testing and Inspection, Procedures. Displaying & Reading Trouble Codes

3
Test drive car

Test drive car and listen particularly for noise which may indicate mechanical fault in transmission.

4
If DTC returns, replace transmission

If DTC 3-2-2 is again displayed during test driving, troubleshooting may be concluded and transmission replaced.

If MIL does not flash, carry out mechanical troubleshooting as described in Testing and Inspection. 'DTC 1-1-1'