Powertrain Control Modules (PCMs)

Make

Aston Martin

Model

DB9 Factory Workshop Manual

Year

Issue 2, 2005

Section

Engine Management System › Powertrain Control Modules (PCMs)

03 EnginePowertrain Control Modules (PCMs)

Powertrain Control Modules (PCMs)

PCM A

View looking into the PCM connectors.

Caution
Check plugs to ensure correct connector

(Refer to 'Circuit Diagrams', page 18-1-17)

T - Transmission
C0634-	Description	I / O	Circuit Page
4	PRND	I	8
9	MAF+	I	67
10	MAF-	I	67
14	CB2+		13
17	Drive TT	0	9
18	Sport TT	0	8
19	Tip up	I	9
20	Tip down	I	9
21	MIL	0	30
24	HEGO 12	I	43
25	HEGO 22	I	43
26	CB2-		13
28	Rev TT	0	8
29	PRND 2	I	8
30	CB 3+		16
31	CB 3-		16
32	Neutral TT	0	9
33	Sport SW	I	8
36	Bap	I	68
38	Engine off	I	9
40	Ref. voltage C		9, 68
41	Signal return C		43, 68
43	Park ST	I	9
45	Park TT	0	8
47	HTR 12	0	43
48	HTR 22	0	43
50	CNVNT	0	68

C - Cowl
C0635-	Description	I / O	Circuit Page
2	Start enable	0	70
3	ISO-K		9
4	App1 Ref. voltage		72
5	App 1	I	72
6	App 1 Return		72
7	Brake pedal switch	I	39
8	Brake On / Off switch	I	39
9	Fuel tank pressure	I	68
10	Case ground		56
11	CB 1+		16
12	Motor fuel pump	0	41
14	Power steering pressure	I	65
15	Accs (Aircon demand)	I	6
16	App 2 Ref. voltage		72
17	App 2	I	72
18	App 2Return		72
19	Sccs (Speed Con Demand)	I	71
20	Restraint deploy Ind	I	2
21	Fuel pump monitor	I	41
22	Oil Pressure	I	65
23	CB 1-		16
24	Power hold	0	50, 56, 63
25	Aircon clutch relay	0	6
26	Aircon pressure	I	6
29	Clutch (Top of travel)	I	70
30	Sccs (Speed Con Return		71
31	TX out (PATS Comms)	0	63
32	Vehicle speed sensor+	I	68
33	Vehicle speed sensor-	I	68
34	EVMV	0	65
35	Power		56
36	Power		56
37	PATIL (PATS LED)	0	30
38	PBI (Start button ILL)	0	70
39	Clutch (Bottom of travel)	I	70
40	Ref. voltage B		6, 65, 68
41	Signal return B		6, 65, 68, 70
42	RXIN (PATS Comms)	I	63
43	EBV	0	68
44	FEPS		16
45	Keep alive power		56
47	Power ground		56

04 Engine