Diagnostic codes (F4A42)

Code	Malfunction
11	Throttle position sensor circuit short
12	Open circuit throttle position sensor.
14	Throttle Position Sensor Inconsistency
15	Transmission Fluid Temperature Sensor Circuit Open
21	Open circuit of the crankshaft angle sensor
22	Short circuit / open circuit of the input shaft sensor
23	Short circuit / open circuit of the output shaft sensor
25	Short circuit of the full throttle sensor circuit
26	Damage to the brake light switch circuit
31	Damage to the low gear and reverse solenoid valve circuit
32	Downshift Solenoid Circuit Damage
33	Damage to the target of the second gear solenoid valve
34	Damage to the purpose of the overdrive solenoid valve
36	Damage to the clutch damper solenoid valve circuit
41	1st gear ratio out of specification
42	2nd gear ratio out of specification
43	3rd gear ratio out of specification
44	4th gear ratio out of specification
46	Reverse gear ratio out of specification
51	Malfunction of communication with the electronic control unit
52	Defective clutch damper solenoid valve
54	Short circuit on «mass» / open circuit of the automatic transmission control relay
56	Short circuit on «mass» control lamp of position N of the lever of the selector of an automatic transmission

1. Make a trip to warm up the gearbox to a temperature of 70-80°C.

Note

• 1) Measure transmission fluid temperature with MUT-II.
• 2) Referring to the diagram shown in Figure 13.8, determine the level of transmission fluid, as it will take some time to warm up the fluid to a temperature of 70-80°C.

2. Park the vehicle on a flat, level surface.

3. With the engine running, move the selector lever from position N to all positions and back to position N.

4. Before removing the dipstick, clean the area around the dipstick to remove dirt. Remove the dipstick and check the condition of the transmission fluid. Check the color of the fluid in the automatic transmission. Check the automatic transmission fluid for unusual odors. Compare the fluid with fresh fluid to determine the change in color and odor of the fluid.

Note. If the automatic transmission fluid has a burnt odor or is contaminated with bushing material or friction, the transmission may need to be overhauled and the heat exchanger and tubes flushed.

5. Check the fluid level, which should be between the HOT marks (pic. 13.9). If necessary, add the required amount of the required liquid. A low fluid level can cause many problems as air enters the fluid and the air-liquid mixture becomes compressible, resulting in erratic pressure changes and failure of clutches and band brakes. Also, an elevated fluid level causes the rotating gears of the transmission to whip up foam, which has the same results as air trapped in the transmission fluid. In any case, air bubbles lead to overheating and oxidation of the transmission fluid, which, getting into the valves, disrupts the operation of the clutch and brakes. Foaming may cause fluid to leak out, which may be mistaken for a fluid leak.



Transmission Fluid: Dia Queen ATF SP II M or ATF SP III

6. Insert the transmission fluid dipstick securely.