Vauxhall Workshop Service and Repair Manuals

Trouble Code Table  

The following table indicates the trouble codes (TC), the information sensor with the fault display, the possible cause of fault and the location for measurement.  

TC	Information sensor	Cause of fault	Terminal
			AF 13	AF 20/22
17	Solenoid valve, 1-2/3-4 voltage low	Short circuit to ground	39, 42	17, 42
25	Solenoid valve, 1-2/3-4 voltage high	Short circuit to battery voltage or circuit interruption	39, 42	17, 42
26	Solenoid valve, 2-3 voltage low	Short circuit to ground	39, 42	17, 42
28	Solenoid valve, 2-3 voltage high	Short circuit to battery voltage or circuit interruption	39, 42	17, 42
29	Solenoid valve, converter clutch voltage low	Short circuit to ground	19, 42
31	Current engine speed no signal	Circuit interruption	8, 42
32	Solenoid valve, pressure regulator voltage low	Short circuit to ground or circuit interruption	40, 42
33	Solenoid valve, pressure regulator current high	Short circuit to battery voltage	40, 42
36	Solenoid valve, converter clutch voltage high	Short circuit to battery voltage or circuit interruption	19, 42

4.4   Trouble Code Table (continued)  

TC	Information sensor	Cause of fault	Terminal
			AF 13	AF 20/22
38	Transmission input speed no signal	Circuit interruption	9, 42
39	Transmission output speed no signal	Circuit interruption	10, 42
41	Transmission hydraulics shift error	Vehicle speed does not correspond to transmission ratio
42	Solenoid valve, pressure regulator short circuit	Short circuit in circuit of pressure regulator solenoid valve	40, 42
47	Downshift lockout prohibited range exceeded	Engine speed too high during downshift
48	Battery voltage low	Battery voltage lower than 9 V	20, 42
49	Battery voltage high	Battery voltage higher than   18 V	20, 42
56	Selector lever incorrect signal	Incorrect adjustment of	2, 42
		selector lever position switch	3, 42
			24, 42
			25, 42
57	TC throttle valve load signal	Voltage high:	28, 42
	incorrect voltage	short circuit to
		battery voltage or
		circuit interruption
		Voltage low:
		short circuit to ground,
	Incorrect signal	no signal to terminal 28

4.4   Trouble Code Table (continued)  

TC	Information sensor	Cause of fault	Terminal
			AF 13	AF 20/22
61	Solenoid valve, neutral shift	Short circuit to		18, 42
	Voltage high	battery voltage or
	AF 13, terminal 18 not	circuit interruption
	occupied
62	Solenoid valve, neutral shift	Short circuit to ground		18, 42
	Voltage high
	AF 13, terminal 18 not
	occupied
66	Transmission fluid temperature sensor voltage low	Short circuit to ground	13, 42
67	Transmission fluid temperature sensor voltage high	Short circuit to battery voltage or circuit interruption	13, 42
75	Torque control	Voltage low	5, 42
	Voltage low	Short circuit to
	PWM signal outside	ground
		PWM signal outside
		impermissible pulse width
		or frequency
76	Engine throttle valve load signal	PWM signal outside impermissible pulse width	7, 42
	Incorrect signal	or frequency
		No signal to terminal 7
77	Kickdown switch voltage low	Short circuit to ground	36, 42
78	Slip period too long when changing gear	Short circuit to ground or circuit interruption

4.4   Trouble Code Table (continued)  

TC	Information sensor	Cause of fault	Terminal
			AF 13	AF 20/22
81	Neutral shift pressure regulation C1
82	Neutral switch engine speed regulation C1	Slippage greater than 15 %
83	Neutral shift engine speed overshoot when engaging C1 (downshifting)
84	Neutral shift slippage C1 when downshifting

• Service  

The AF 13/20/22 automatic transmissions can be tested with the TECH 1 diagnostic tester in conjunction with the diagnostic software for the program module "Opel/Vauxhall MSC" and the "new" AF 13/20/22 Checking Procedures.