C1 (Blue) PCM 32 Pin Connector

Pin Wire Color Description

1 --- Empty
2 --- Empty
3 Brown w/ White stripe 1X Cam (CMP) Sensor Signal
4 --- Empty
5 --- Empty
6 --- Empty
7 Tan HO2S Low Bank 2 Sensor 1
8 Pink w/ Black stripe Cam (CMP) Sensor Ground (Low)
9 Purple Fuel Gauge (Fuel Level Output)
10 <-
--- Empty (1998 Only)
>
10 <-
Tan w/ Black stripe TCC Control Solenoid (1999 Only)
>
11 --- Empty
12 --- Empty
13 --- Empty
14 Brown AIR Relay Control (California Only)
15 Yellow w/ Black stripe Vehicle Speed Sensor (VSS)
16 --- Empty
17 --- Empty
18 <-
Purple w/ White stripe Dual Tank Fuel Module (1998 Only)
>
18 <-
--- Empty (1999 Only)
>
19 Purple w/ White stripe HO2S High Bank 1 Sensor 1
20 <- HO2S High Bank 1 Sensor 2 (1998
Purple
> Only)
20 <- HO2S High Bank 2 Sensor 2 w/out
Purple
> C6P -under 8600 GVW (1999 Only)
20 <- HO2S High Bank 1 Sensor 2 w C6P -
Purple
> over 8600 GVW (1999 Only)
21 Purple HO2S High Bank 2 Sensor 1
22 <- HO2S High Bank 2 Sensor 2 (1998
Purple w/ White stripe
> Only)
22 <- HO2S High Bank 2 Sensor 2 w/ C6P -
Purple w/ White stripe
> over 8600 GVW (1999 Only)
22 <- HO2S High Bank 1 Sensor 2 w C6P -
Purple w/ White stripe
> under 8600 GVW (1999 Only)
23 --- Empty
24 <- HO2S Low Bank 1 Sensor 2 (1998
Tan
> Only)
24 <- HO2S Low Bank 2 Sensor 2 w/out
Tan
> C6P -under 8600 GVW (1999 Only)
24 <- HO2S Low Bank 1 Sensor 2 w/ C6P -
Tan
> over 8600 GVW (1999 Only)
25 Tan w/ White stripe HO2S Low Bank 1 Sensor 1
26 <- HO2S Low Bank 2 Sensor 2 (1998
Tan w/ White stripe
> Only)
26 <- HO2S Low Bank 2 Sensor 2 w/ C6P -
Tan w/ White stripe
> over 8600 GVW (1999 Only)
26 <- HO2S Low Bank 1 Sensor 2 w/out
Tan w/ White stripe
> C6P -under 8600 GVW (1999 Only)
27 --- Empty
28 Purple Crank (CKP) Sensor Ground (Low)
29 Light Green w/ Black Vehicle Speed Sensor (VSS) Low
30 Purple w/ White stripe Vehicle Speed Sensor (VSS) Signal
31 Yellow 4X Crank (CKP) Sensor Signal
32 --- Empty
 C2 (Red) PCM 32 Pin Connector
Pin Wire Color Description
1 --- Empty
2 White Canister Vent Solenoid Control
3 --- Empty
4 Yellow w/ Black stripe 2-3 Shift Solenoid Control
5 --- Empty
6 Light Green 1-2 Shift Solenoid Control
7 Brown PWM TCC Solenoid Control
8 Black Injector #1 Control
9 Dark Blue w/ White stripe Injector #8 Control
10 Brown EGR Pintle Position
11 Light Green w/ Black stripe Injector #2 Control
12 Red w/ Black wire Injector #7 Control
13 Light Green w/ White stripe Idle Air Control (IAC) B High
14 Light Blue w/ White stripe Idle Air Control (IAC) A High
15 Black w/ White stripe Injector #5 Control
16 Yellow w/ Black stripe Injector #6 Control
17 --- Empty
18 --- Empty
19 Dark Blue Knock Sensor Signal
20 --- Empty
Manifold Absolute Pressure (MAP)
21 Light Green
Signal
22 Tan Intake Air Temp (IAT) Signal
 Engine Coolant Temp (ECT)
23 Yellow
Signal
Throttle Position Sensor (TPS)
24 Dark Blue
Signal
25 Dark Green Fuel Tank Vacuum Sensor Signal
26 --- Empty
TFT Signal (Automatic
27 Yellow w/ Black stripe
Transmission Only)
Mass Air Flow (MAF) Sensor
28 Yellow
Signal
29 Light Green w/ Black stripe Idle Air Control (IAC) B Low
30 Light Blue w/ Black stripe Idle Air Control (IAC) A Low
31 Light Blue w/ Black stripe Injector #4 Control
32 Pink w/ Black stripe Injector #3 Control

C3 (Grey -Clear-) PCM 32 Pin Connector

Pin Wire Color Description
 A/C Compressor Clutch Relay
1 Dark Green w/ White stripe
Control
2 Dark Green w/ White stripe Purge Canister Solenoid
3 --- Empty
Engine Coolant Temp (ECT) and
4 Black Throttle Position Sensor (TPS)
Ground
5 --- Empty
6 Red w/ Black stripe PC Solenoid Valve High
7 Dark Blue w/ White stripe Input Speed Sensor Low
8 Red w/ Black stripe Input Speed Sensor High
Ignition Control Module (ICM)
9 White
Control
10 --- Empty
11 Red Transmission Range Signal C
12 Gray 5 Volt Reference
13 Purple w/ White stripe Fuel Level Module (Single Tank)
14 Dark Blue A/C Recirculation Signal
15 --- Empty
PC Solenoid Low (Automatic
16 Light Blue w/ White stripe
Transmission Only)
17 Black w/ White stripe System Ground
18 Black w/ White stripe System Ground
19 Black Sensor Ground (IAT/MAP/EGR, etc.)
20 --- Empty
21 Orange 12 Volt Battery Feed
22 Dark Blue Transmission Range Signal B
23 Pink Transmission Range Signal A
24 --- Not Used
25 Dark Green w/ White stripe A/C Request Signal
26 --- Empty
27 Grey EGR, MAP 5 Volt Reference
28 --- Empty
29 --- Empty
A/C Compressor Cycling Switch
30 Dark Green
Signal
31 --- Empty
32 --- Empty

C4 (Black) PCM 24 Pin Connector

Pin Wire Color Description
1 Dark Green w/ White stripe Fuel Pump Relay Control
2 --- Empty
 Vehicle Speed Sensor (VSS)
3 Dark Green w/ White stripe Output Signal (TCCM, Radio,
Cruise)
Vehicle Speed Sensor (VSS)
4 Dark Green
Output Signal (Speedometer)
Malfunction Indicator Light
5 Brown w/ White stripe
(MIL) ...Check Engine Light
6 --- Empty
Inlet Air Actuator (Recirculation
7 Dark Green
Door Motor) Control
8 --- Empty
9 Dark Blue Auxiliary Electric Cooling Fan
10 Purple Brake Switch Signal
11 Purple Serial Data (Class 2)
12 Black Dual Fuel Module Return
13 Brown 12 Volt Ignition Feed
14 --- Empty
15 <-
--- Empty (1998 Only)
>
15 <- Shift Light (Manual Transmission
Tan w/ Black
> -1999 Only)
16 Red EGR Valve Solenoid Control
17 --- Empty
18 Pink 12 Volt Ignition Feed
4WD Engaged Signal (Wheel
19 Black w/ White stripe
Lock Input)
20 White EGR Valve Solenoid Control
21 --- Empty
22 <-
--- Empty (1998 Only)
>
22 <- CPP Switch Signal (Manual
Brown w/ White stripe
> Transmission -1999 Only)
23 Gray w/ Black stripe Transfer Case High Low Switch
24 Light Blue w/ Black stripe Cruise Engaged Signal