Pin numbers reflect the color of the wire for that pin
01
Variant-code
lead
Output
02 N/C
03 N/C
04 Diagnostics lead K (pin 3)
* Output
05 Combustion signal, cyls 3
& 4 Output/Input
06 Feed to crankshaft
sensor
Output Battery voltage
07 Check Engine
light Output
08
Throttle position signal
** Input 0 V full throttle, 10 to 12 V idle
09 N/C
10 APC solenoid, pin
1
Output
11 Knock sensor
signal
Input
12 N/C
13 Ground (black)
14 Temp sensor (in inlet
pipe) Input
0 - 5 V, temperature dependent
15 Ground for crankshaft sensor (black)
16 N/C
17 Ground for temp
sensor (black)
18 Trigger
signal for cyl 4 Output
1/2 millisecond negative-going pulses
19 Trigger
signal for cyl 2
Output 1/2 millisecond negative-going pulses
20 N/C
21 +12,
switched
22 +12,
direct (unswitched)
23
Crankshaft position
signal Input Note 1
24 Diagnostics
lead L (pin 3) * Output
25 Combustion signal, cyls 1
& 2 Output/Input
26 Pre-ignition
enrichment
Output
27 N/C
28 N/C
29 RPM
signal
Output
30 Book says NC, but it's knock
sensor shield
31
Throttle position signal
** Input
32 Brake signal (turbo
only) Input +12 when brake is applied
33 APC solenoid, pin
3
Output
34
Speed sensor (non-turbo only) Input
35 +12,
direct (unswitched)
36
Load signal (Tq) Input
10 to 30 microsec pulse from fuel ECU, pin 25
37 Trigger
signal for cyl 3 Output
1/2 millisecond negative-going pulses
38 Trigger
signal for cyl 1 Output 1/2 millisecond negative-going pulses
* I'm not sure what
difference is between K & L diagnostic
** Pin 8 is the signal from the throttle angle
transmitter (position potentiometer) on the throttle body
Book says it should be 0 V @
full throttle, 10 - 12 V at idle
I don't know what 31 is; book
says 1 V @ idle, approx. 11 V @ full throttle
Note 1: 5 V dc with key in run
position, engine not running. 40 millisecond negative-going pulses from 5
volts when running