|
ECM Connector "A" (Orange) '91-'93 VIN X 3.4 TDC |
|
Pin Function |
CKT# |
Wire Color |
Component
Connector Cavity |
Codes Affect. |
Possible
Symptoms From Faulty Circuit |
|
A1 IAC "A"
High |
441 |
Lt. Blue/White |
IAC Valve
Connector "D" |
35 (3) |
High or Low
Idle, Unstable or incorrect Idle |
|
A2 IAC "B" Low |
444 |
Lt.
Green/Black |
IAC Valve
Connector "A" |
35 (3) |
High or Low
Idle, Unstable or incorrect Idle |
|
A3 Fan #2
Control |
473 |
Dk. Blue/White |
Fan Control
Relay #2 Connector "#1" |
None |
Inoperative
Fan, Fan runs all the time |
|
A4 EGR
Solenoid #1 |
697 |
Lt. Blue |
Digital EGR
Valve Connector "A" |
32 |
Rough Idle,
Spark Knock, Stalls after cold start, Surge during cruise |
|
A7 IAC "A" Low |
442 |
Lt. Blue/Black |
IAC Valve
Connector "C" |
35 (3) |
High or Low
Idle, Unstable or incorrect Idle |
|
A8 IAC "B"
High |
443 |
Lt.
Green/White |
IAC Valve
Connector "B" |
35 (3) |
High or Low
Idle, Unstable or incorrect Idle |
|
A9 Fan #1
Control |
335 |
Dk.
Green/White |
Fan Control
Relay #1 Connector "#1"" |
None |
Inoperative
Fan, Fan runs all the time |
|
A10 Canister
Purge |
428 |
Dk.
Green/Yellow |
CPC Solenoid
Connector "B" |
None |
Fuel Loss or
Fuel Vapor Odor, Poor Idle, Stalling, Poor Driveability |
|
A11 ESC Signal |
496 |
Dk. Blue |
Knock Sensor |
43 (3) |
Lack of
Performance, Spark Knock |
|
A12 A/C Relay
Control |
459 |
Dk.
Green/White |
A/C Relay
Connector #2 |
None |
No A/C Clutch
Engagement |
|
A13 "B" Shift
Solenoid |
582 |
Lt. Blue |
TCC Solenoid
Connector "G" |
None |
No TCC, Poor
Fuel Economy, Chugging or Surge Condition |
|
A16 O2 Signal |
412 |
Purple |
Oxygen Sensor |
13, 45 (3) |
Rich Exhaust,
Exhaust Odor, Rough or Incorrect Idle, Hesitation, Poor
Performance |
|
A18 "A" Shift
Solenoid (4T60E) |
581 |
Orange |
TCC Solenoid
Connector "F" |
None |
No TCC, Poor
Fuel Economy, Chugging or Surge Condition |
|
A18 Air Pump
Relay (3.4 Only) Air Solenoid (M/T 3.1L) |
429 |
Black/Pink |
Air Divert
Relay Connector "#1" to Air Pump and Diverter Valve |
None |
Inoperative
Air Pump Relay and Diverter Valve or Solenoid |
|
A19 EGR
Solenoid #2 |
698 |
Brown |
Digital EGR
Valve Connector "B" |
32 |
Rough Idle,
Spark Knock, Stalls after Cold Start, Surge during Cruise |
|
A20 Fuel Pump
Signal |
120 |
Gray |
Fuel Pump
Relay Connector "#1" Bulkhead Connector "A2" OPS Connector
"C" |
54 |
Hard to Start |
|
A22 ECM Sensor
Ground |
413 |
Tan |
Engine Ground |
13, 44 (3) |
Rough or
Incorrect Idle, Lean Exhaust, Poor Performance |
|
(1) Open
Circuit
(2) Grounded
Circuit
(3)
Open/Grounded Circuit |
