Control module connections

Fig 1: Identifying Control Module Connections

Courtesy of SAAB-SCANIA OF AMERICA, INC.

NOTE: A BOB cable assembly has not been produced for ESP. Unless otherwise stated, the test readings are those that should be obtained on the control module connector (unplugged).

= greater than; < = less than; ~ = alternating current (LP: LOGIC PROBE P = select pulse; p = visible pulse)

COMPONENT/FUNCTION DESCRIPTION

Pin	Cable colour	Component/function	In/Out	Test conditions	Test across	Test reading
1	BK	Pump motor, power ground	In		B+ - 4	B+
2	RD	+30 voltage, power	IN		2 - B-	B+
3	RD	Current (+30 circuit)	IN		3 - B-	B+
4	BK	Ground	IN		B+ - 4	B+
5	RD	Wheel sensor, FL: signal input	IN	Rotate the wheel one turn per second	5 - 6	100 mV AC
6	BU	Wheel sensor, FL: reference ground	IN	Rotate the wheel one turn per second	5 - 6	100 mV AC
7	YE	Wheel sensor, RL: signal input	IN	Rotate the wheel one turn per second	7 - 27	100 mV AC
8	WH	Wheel sensor, RR: reference ground	IN	Rotate the wheel one turn per second	29 - 8	100 mV AC
9	GN	Wheel sensor, FR: reference ground	IN	Rotate the wheel one turn per second	10 - 9	100 mV AC
10	GY	Wheel sensor, FR: signal input	IN	Rotate the wheel one turn per second	10 - 9	100 mV AC
11	GN	Data link	IN/OUT	Tech 2 not connected	11- - B-	0 V
11	GN	Data link	IN/OUT	Tech 2 connected and ESP selected for communication	11 - B-	variable, approx. 10V
12		Spare
13		Spare
14	WH	P-bus -		Bus information	14 - 4	approx. 2.5V
15	BK	System ground for yaw rate sensor			Cannot be measured
16	BK/YE	Yaw rate sensor, yaw rate signal	IN		Cannot be measured
17		Spare
18	OG	Yaw rate sensor, reference signal	OUT		Cannot be measured
19	GN	Signal from wheel sensor, rear left Used by special equipment	OUT		Cannot be measured
20	YE	Lateral acceleration sensor, lateral acceleration	IN		Cannot be measured
21		Spare
22		Spare
23		Spare
24		Spare
25		Spare
26		Spare
27	BK	Wheel sensor, RL: reference ground	IN	Rotate the wheel one turn per second	7 - 27	100 mV AC
28	RD/BU	Current (+15 circuit)	IN		28 - B-	B+
29	VT	Wheel sensor, RR: signal input	IN	Rotate the wheel one turn per second	29 - 8	100 mV AC
30	GN/GY	Brake Light Switch	IN	Brake pedal depressed	30 - B-	B+
30	GN/GY	Brake Light Switch	IN	Brake pedal released	30 - B-	0 V
31	PK	ESP ON/OFF switch	IN	Switch not depressed	B+ - 31	0 V
31	PK	ESP ON/OFF switch	IN	Switch depressed	B+ - 31	B+
32		Spare
33		Spare
34		Spare
35	GN	P-bus +		Bus information	35 - 4	approx. 2.5V
36		Spare
37	GN/BU	Yaw rate sensor, reference signal	OUT		Cannot be measured
38		Spare
39		Spare
40		Signal from wheel sensor, front right, for PSG16			Cannot be measured
41-45		Spare