Pontiac Fiero 1988 Service Manual page 979

E L E C T R O N I C FUEL INJECTION: L4 VIN R
E L E C T R O N I C C O N T R O L M O D U L E
( E C M ) (L4 V I N R )
C 2 CHART
Cavity
Wire Color
Circuit
Circuit Function Cavity
Socket Half
Number
Circuit Function
1
2
3
4
ORN
PPL
DK BLU
4 6 1
4 1 2
4 5 8
Serial Data Link
Oxygen Sensor Input HI
A / C Compressor Relay Control
Not Used
5
6
7
7
8
TAN
TAN/BLK
TAN/BLK
YEL
4 7 2
4 2 2
4 5 6
4 1 0
Manifold Air Temperature Input
Not Used
Transaxle Convertor Clutch
Control (Automatic Only)
Upshift Indicator Control (Manual
Only)
Coolant Temperature Sensor Input
9
10
11
12
PPL/WHT
L T G R N
DK BLU/WHT
BLK
4 3 0
4 0 2
4 0 3
4 5 2
Reference Pulse Input HI
V a c u u m Valve Feed
Vent Valve Feed
Reference Ground
13
14
15
16
BRN
WHT/BLK
BLK/RED
8 6
4 5 1
4 5 3
Not Used
Brake Input
Diagnostic " T e s t " Input
Reference Pulse Input LO
17
18
19
2 0
DK BLU
L T G R N
4 1 7
4 3 2
Not Used
Not Used
Throttle Position Sensor Input
Manifold Absolute Pressure (MAP)
Sensor Input
21
2 2
23
2 4
DK GRN/WHT
BRN/WHT
TAN
GRY/RED
3 3 5
4 1 9
4 1 3
9 0 1
Coolant Fan Relay Control
" S e r v i c e Engine S o o n ' ' Indicator
Control
Oxygen Sesnor Input LO
Coolant Fan Enable