Toyota Tundra 2001-06

Connector Pin Identification

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Fig.

PCM Pin #Wire ColorCircuit Description (26 Pin)Value at Hot Idle
1RD/WTHO2S-12 (B1 S2) HeaterHeater Off: 12v, On: 1v
2PK/GNHO2S-11 (B1 S1) HeaterHeater Off: 12v, On: 1v
2 ('99)RD/BKHO2S-11 (B1 S1) HeaterHeater Off: 12v, On: 1v
3WT/GNEVAP Purge Solenoid (VSV)12v or 0v
4GN/RDCruise Control ECUAt Cruise in OD: 12v
6BKIAC Signal (RSC)Pulse Signals
7BK/RDIAC Signal (RSO)Pulse Signals
9RD/BLInjector 4 Control1.6-2-9 ms
10RDInjector 3 Control1.6-2-9 ms
11WTInjector 2 Control1.6-2-9 ms
12WT/RDInjector 1 Control1.6-2-9 ms
13BRPower Ground<0.1v
14GN/YLCircuit Opening Relay (FC)0-3v, at off-idle: 12v
15BKTachometer Signal (TACO)Pulse Signals
17BK/YLIgniter Signal (IGF)Digital Signal: 0-5-0v
22BR/YLIgniter Transistor 2 ControlDigital Signal: 0-5-0v
23BK/BLIgniter Transistor 1 ControlDigital Signal: 0-5-0v
24BRShield Ground<0.050v
25BRPower Ground<0.1v
26BRPower Ground<0.1v


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Fig.

PCM Pin #Wire ColorCircuit Description (22 Pin)Value at Hot Idle
1BK/YLDirect Battery12-14v
2RD/BKA/T Select Switch ReverseIn 'R': 12v, Others: 0v
3PK/WTA/T Select Switch LowIn Low: 12v, Others: 0v
4PKA/T Select Switch 2ndIn 2nd: 12v, Others: 0v
5PKA/T Oil Temperature IndicatorLamp Off: 12v, On: 1v
6VT/RDMIL (lamp) ControlMIL Off: 12v, On: 1v
7BK/WTStarter Switch Signal9-11v (cranking)
8---Not Used---
9BLA/T Park (lamp) IndicatorLamp Off: 12v, On: 1v
10BL/ORO/D OFF Indicator (ODLP)Lamp Off: 12v, On: 1v
11BR/YLA/T Select Switch DriveIn 'D': 12v, Others: 0v
12WTSIL (Scan Tool) Signal12v
13BL/YLA/C Amplifier Signal (AC1)Clutch On: 1.5v, Off: 12v
14BL/BKA/C Amplifier Signal (ACT)Clutch On: 12v, Off: 1.5v
15GN/WTStop Light Switch SignalBrake Off: 0v, On: 12v
16WT/RDEFI Main Relay (B+)12-14v
17GNA/T Pattern Select SwitchNorm: 0v, PWR: 12v
18-19---Not Used---
20GN/RDDefogger Idle-up SignalLoad On: 12v, Off: 0v
21GN/ORSpeedometer Indicator (SP1)At 55 mph: 48 Hz
22BK/RDA/T: Neutral Start SignalIn P/N: 9-11v (cranking)


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Fig.

PCM Pin #Wire ColorCircuit Description (28 Pin)Value at Hot Idle
1-4---Not Used---
5LG/RDCruise Control ECU (IDLO)1.5v, off-idle: 12v
6GN/YLCircuit Opening Relay (FC)0-3v, at off-idle: 12v
7VT/WTDLC 7 Signal (TC)12v
8RD/YLEVAP Vapor Pressure Sensor2.5-3.1v (with fuel cap off)
9-12---Not Used---
13BKTachometer Signal (TACO)Pulse Signals
14-23---Not Used---
24---Not Used---
25GNOD Main Switch (ODMS)Switch Off: 12v, On: 1v
26-27---Not Used---
28YLPSP Switch SignalStraight: 12v, Turning: 0v


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Fig.

PCM Pin #Wire ColorCircuit Description (24 Pin)Value at Hot Idle
2GN/YLSensor VREF (VC)4.9-5.1v
3RD/WTHO2S-12 (B1 S2) HeaterHeater Off: 12v, On: 1v
4WTAFS-11 (B1 S1) HeaterHeater Off: 12v, On: 1v
6WT/GNEVAP Purge Solenoid (VSV)12v or 0v
7GY/GNEVAP Vapor Pressure (VSV)12v or 0v
9BK/BLTP Sensor Signal (VTA)0.3-0.8v
10RDHO2S-12 (B1 S2) Signal0.1-1.1v
11WTAFS-11 (B1 S1) Signal (+)Fixed at 3.3v
12GN/RDECT Sensor Signal (THW)At 180°F: 0.51v
14GYMAF Sensor Signal (VG)1.1-1.8v
15YLCMP Sensor SignalAC pulse signals
16RDCKP Sensor SignalAC pulse signals
17BRShield Ground (E1)<0.050v
18BR/BKSensor Ground (E2)<0.050v
20RDAFS-11 (B1 S1) Signal (-)Fixed at 3.3v
21YL/GNIAT Sensor Signal (THA)At 100°F: 2.60v
22BK/WTMAF Sensor Ground (E2G)<0.050v
24GNCKP/CMP Sensor Signal (-)<0.050v


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Fig.

PCM Pin #Wire ColorCircuit Description (31 Pin)Value at Hot Idle
1WT/RDInjector 1 Control2.0-3.3 ms
2WTInjector 2 Control2.0-3.3 ms
3RDInjector 3 Control2.0-3.3 ms
4RD/BLInjector 4 Control2.0-3.3 ms
5, 6WT/BKPower Ground (E03), (E04)<0.1v
7PK/YLA/T-ECT Solenoid (S1)3rd or OD: 1v
8LGA/T-ECT Solenoid (S2)1st or OD: 1v
9RD/GNA/T-ECT Solenoid (SL)In Lockup: 12-14v
10BK/YLIgniter Signal (IGF)Digital Signal: 0-5-0v
11BK/BLIgniter Transistor 1 Control6°, 55 mph: 8° dwell
12BK/WTIgniter Transistor 2 Control6°, 55 mph: 8° dwell
13BL/RDIgniter Transistor 3 Control6°, 55 mph: 8° dwell
14BL/YLIgniter Transistor 4 Control6°, 55 mph: 8° dwell
15BK/RDIAC Control (RSD)Pulse Signals
21WT/BKPower Ground (E01)<0.1v
26YL/RDA/T Oil Temperature SensorAt 68°F: 4-5v
28GYKnock Sensor Signal<0.075v AC
31WT/BKPower Ground (E02)<0.1v


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Fig.

PCM Pin #Wire ColorCircuit Description (22 Pin)Value at Hot Idle
1BK/RDDirect Battery12-14v
2BK/ORIgnition Switch Power12-14v
3YLCircuit Opening Relay (FC)0-3v, at off-idle: 12v
6VT/GNMIL (lamp) ControlMIL Off: 12v, On: 1v
7BK/WTStart Switch Signal (STA)9-11v (cranking)
8BK/YLEFI Main Relay ControlRelay Off: 0v, On: 12v
9GY/RDEVAP Vapor Pressure (VSV)12v or 0v
11WTSIL (Scan Tool) Signal12v
15GN/WTStop Light Switch SignalBrake Off: 0v, On: 12v
16WT/BLEFI Main Relay (B+)12-14v
17RD/GNEVAP Vapor Pressure Sensor2.9-3.1v (with fuel cap off)


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Fig.

PCM Pin #Wire ColorCircuit Description (28 Pin)Value at Hot Idle
2RD/BKA/T Select Switch ReverseIn 'R': 12v, Others: 0v
3BLA/T Select Switch 2ndIn 2nd: 12v, Others: 0v
4YL/GNCruise Control ECU (IDLO)1.5v, off-idle: 12v
6RDOD Main Switch (ODMS)Switch Off: 12v, On: 1v
7YL/RDA/T Oil Temperature IndicatorLamp Off: 12v, On: 1v
8RDHO2S-12 (B1 S2) Signal0.1-1.1v
9RD/WTHO2S-12 (B1 S2) HeaterHeater Off: 12v, On: 1v
10BL/ORO/D OFF Indicator (ODLP)Lamp Off: 12v, On: 1v
12LGA/T Select Switch LowIn Low: 12v, Others: 0v
13BL/BKA/C Amplifier Signal (ACT)Clutch On: 12v, Off: 1.5v
17RD/YL4WD Detection Transfer (N)Open: 12v, Closed: 0v
18GY4WD ADD Indicator SwitchOpen: 12v, Closed: 0v
19BL/RD4WD Detection Transfer (L4)Open: 12v, Closed: 0v
20PKNeutral Start SwitchIn P/N: 9-11v (cranking)
22GN/ORSpeedometer Indicator (SPI)At 55 mph: 48 Hz
24BR/YLCruise Control ECU (OD1)At Cruise in OD: 12v
25BL/YLA/C Amplifier Signal (AC1)Clutch On: 1.5v, Off: 12v


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Fig.

PCM Pin #Wire ColorCircuit Description (17 Pin)Value at Hot Idle
1, 3, 5-7---Not Used---
2YLThrottle Control Motor (CL+)Pulses
4RD/BKTP Sensor Signal (VTA2)2.0-2.9v
8BLThrottle Control Motor (CL-)Pulses
9---Not Used---
10RD/WTAccelerator Position Sensor (VPA)0.25-0.90v
15BLAccelerator Position Sensor (VPA2)1.8-2.7v
16-17---Not Used---


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Fig.

PCM Pin #Wire ColorCircuit Description (24 Pin)Value at Hot Idle
2GN/BKSensor VREF (VC)4.9-5.1v
4YLAFS-11 (B1 S1) HeaterHeater Off: 12v, On: 1v
5RDInjector 1 Control1.6-2-9 ms
6WTInjector 2 Control1.6-2-9 ms
7WT/GNEVAP Purge Solenoid (VSV)12v or 0v
8WT/BKPower Ground (E05)<0.1v
9YL/RDPSP Switch SignalStraight: 12v, Turning: 0v
10RD/WTMAF Sensor Signal (VG)1-1.1v
12GNAFS-11 (B1 S1) Signal (AF+)Fixed at 3.3v
14GNECT Sensor Signal (THW)0.5-0.6v
15RD/YLA/T Oil Temperature SensorAt 68°F: 4-5v
16VTCKP Sensor Signal (NE+)AC pulse signals
17BRPower Ground<0.050v
18GN/WTSensor Ground (E2)<0.050v
19BK/WTMAF Sensor Ground (E2G)<0.050v
21RDAFS-11 (B1 S1) Signal (AF-)Fixed at 3.3v
22YL/GNIAT Sensor Signal (THA)0.5-3.4v
23BK/YLTP Sensor Signal (VTA)0.53-1.27v
24PKCMP/CKP Sensor Ground (-)<0.050v


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Fig.

PCM Pin #Wire ColorCircuit Description (31 Pin)Value at Hot Idle
1GNInjector 3 Control1.6-2-9 ms
2RD/BKInjector 4 Control1.6-2-9 ms
3BLInjector 5 Control1.6-2-9 ms
4YLInjector 6 Control1.6-2.9 ms
6RDData Link Connector12-14v
7RDA/T-ECT Solenoid (S1)3rd or OD: 1v
8WT/BLA/T-ECT Solenoid (S2)1st or OD: 1v
9GN/RDA/T-ECT Solenoid (SL)In Lockup: 12-14v
10BLCMP Sensor Signal (G2)AC pulse signals
11BK/BLIgniter Transistor 1 Control6°, 55 mph: 8° dwell
12RD/BLIgniter Transistor 2 Control6°, 55 mph: 8° dwell
13LGIgniter Transistor 3 Control6°, 55 mph: 8° dwell
14YL/RDA/T Vehicle Speed Sensor (+)AC pulse signals
15BK/RDIAC Signal (RSC)Pulse Signals
16RD/WTIAC Signal (RSO)Pulse Signals
21BRPower Ground (E01)<0.1v
25BK/YLIgniter Signal (IGF)Digital Signal: 0-5-0v
26WT/RDA/T Vehicle Speed Sensor (-)AC pulse signals
27BKKnock Sensor 1 Signal<0.075v AC
28GYKnock Sensor 2 Signal<0.075v AC
30BRPower Ground (E03)<0.1v
31WT/BKPower Ground (E02)<0.1v


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Fig.

PCM Pin #Wire ColorCircuit Description (22 Pin)Value at Hot Idle
1WT/BLEFI Main Relay (B+)12-14v
2VT/GNMIL (lamp) ControlMIL Off: 12v, On: 1v
3BL/BKA/C Amplifier Signal (ACT)Clutch On: 12v, Off: 1.5v
4BK/YLEFI Main Relay ControlRelay Off: 0v, On: 12v
5---Not Used---
6GN/ORSpeedometer Indicator (SP1)At 55 mph: 48 Hz
7BKStart Switch Signal (STA)9-11v (cranking)
8WT/GNETCS Power (+BM)12-14v
9BL/YLA/C Amplifier Signal (AC1)Clutch On: 1.5v, Off: 12v
10-12---Not Used---
13BL/WTData Link Connector (WFSE)12v
14WTSIL (Scan Tool) Signal12v
15BK/ORIgnition Switch Power (IGSW)12-14v
16BK/RDDirect Battery12-14v
17YLCruise Control IndicatorIndicator Off: 12v, On: 1v
18-19---Not Used---
20GN/WTStop Light Switch SignalBrake Off: 0v, On: 12v
21RD/BKCenter Airbag Sensor Assembly (F/PS)Digital Signals
22YLCircuit Opening Relay (FC)0-3v, at off-idle: 12v


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Fig.

PCM Pin #Wire ColorCircuit Description (28 Pin)Value at Hot Idle
1, 7---Not Used---
2BL/RD4WD Detection Transfer (L4)Open: 12v, Closed: 0v
3PKNeutral Start Switch (NSW)In 'P' or 'N': 0v
4LGA/T Select Switch Signal (L)In 'L': 12v, Others: 0v
5BLA/T Select Switch Signal (2)In 2nd: 12v, Others: 0v
6RD/BLA/T Select Switch Signal (R)In 'R': 12v, Others: 0v
8PK/BLTraction Control ECU Signal (NEO)Pulse Signals
9BL/RDStop Light Switch (STI-)Brake Off: 0v, On: 12v
10-12, 16-17---Not Used---
13GR4WD Switch Signal (4WD)4WD Switch On: 12v
14RDOD Main Switch (ODMS)Switch Off: 12v, On: 1v
18LGTraction Control ECU Signal (ENG-)Pulse Signals
19LG/BKTraction Control ECU Signal (ENG+)Pulse Signals
20BL/ORO/D OFF Indicator (ODLP)Lamp Off: 12v, On: 1v
21YL/RDA/T Oil Temperature Indicator (OILW)Lamp Off: 12v, On: 1v
22GNCruise Control Switch, Coast Control SwitchAt Cruise in OD: 12v
23-24, 26---Not Used---
25WT/RDA/T Select Switch Signal (D)In 'D': 12v, Others: 0v
27PKTraction Control ECU Signal (TRC-)Pulse Signals
28VT/GNTraction Control ECU Signal (TRC+)Pulse Signals


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Fig.

PCM Pin #Wire ColorCircuit Description (17 Pin)Value at Hot Idle
1, 3, 6-7, 9---Not Used---
2YLThrottle Control Motor (CL+)Pulses
4RD/BKTP Sensor Signal (VTA2)0.3-1.0v
5BK/RDA/T-ECT Solenoid (SLT+)Pulse Signals
8BLThrottle Control Motor (CL-)Pulses
10RD/WTAccelerator Position Sensor (VPA)0.3-1.0v
11GNWTA/T-ECT Solenoid (SLT-)Pulse Signals
12-14, 16-17---Not Used---
15RDAccelerator Position Sensor (VPA2)0.3-1.0v


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Fig.

PCM Pin #Wire ColorCircuit Description (24 Pin)Value at Hot Idle
1BLInjector 5 Control1.6-2-9 ms
2BK/YLIgniter Signal (IGF)Digital Signal: 0-5-0v
3RD/BKInjector 4 Control1.6-2-9 ms
4GNInjector 3 Control1.6-2-9 ms
5WTInjector 2 Control1.6-2-9 ms
6RDInjector 1 Control1.6-2-9 ms
7WT/GNData Link Connector (TC)12v
8YLInjector 6 Control1.6-2.9 ms
9LGIgniter Transistor 3 Control6°, 55 mph: 8° dwell
10RD/BLIgniter Transistor 2 Control6°, 55 mph: 8° dwell
11BK/BLIgniter Transistor 1 Control6°, 55 mph: 8° dwell
12RDCKP Sensor Signal (NE+)AC pulse signals
13BLCMP Sensor Signal (G2)AC pulse signals
14GN/WTEVAP Purge Solenoid (VSV)12v or 0v
15-16, 20---Not Used---
17BRPower Ground (E01)<0.1v
18YL/RDPSP Switch Signal (PSW)Straight: 12v, Turning: 0v
19BL/WTEVAP Closed Canister Valve (VSV)12v or 0v
21GNCMP/CKP Sensor Ground (NE-)<0.050v
22WT/RDA/T Vehicle Speed Sensor (SP2-)AC pulse signals
23YL/RDA/T Vehicle Speed Sensor (SP2+)AC pulse signals


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Fig.

PCM Pin #Wire ColorCircuit Description (31 Pin)Value at Hot Idle
1GN/RDA/T-ECT Solenoid (SL)In Lockup: 12-14v
2WT/BLA/T-ECT Solenoid (S2)1st or OD: 1v
3RDA/T-ECT Solenoid (S1)3rd or OD: 1v
4WT/BKPower Ground (E01)<0.1v
5WT/BKPower Ground (E02)<0.1v
6BRPower Ground (ME01)<0.1v
7WT/BKPower Ground (E03)<0.1v
8WT/BKPower Ground (E04)<0.1v
9GNThrottle Control Motor (M+)Pulse Signals
10GN/WTMAF Sensor Ground (E2G)<0.050v
11BK/WTSensor Ground (E2)<0.050v
12RD/YLMAF Sensor Signal (VG)1-1.1v
13YL/GNIAT Sensor Signal (THA)0.2-1.0v
14VTAFS-11 (B1 S1) Signal (AF1+)Fixed at 3.3v
15BK/YLTP Sensor Signal (VTA)0.3-1.0v
16, 20---Not Used---
17BRShield Ground (GE01)<0.050v
18GN/YLECT Sensor Signal (THW)0.5-0.6v
19RD/YLA/T Oil Temperature SensorAt 68°F: 4-5v
21YLAFS-11 (B1 S1) Heater (HTAF1)Heater Off: 12v, On: 1v
22GRKnock Sensor 2 Signal (KNK2)<0.075v AC
23BKKnock Sensor 1 Signal (KNK1)<0.075v AC
24RD/BLEVAP Vapor Pressure Sensor (PTNK)2.9-3.1v (with fuel cap off)
25GN/BKSensor VREF (VC)4.9-5.1v
26PKAFS-11 (B1 S1) Signal (AF1-)Fixed at 3.3v
27RDHO2S-12 (B1 S2) Signal (OX2B)0.1-1.1v
28, 30---Not Used---
29RD/WTHO2S-12 (B1 S2) Heater (HT2B)Heater On: 12v, Off: 0v
31RDThrottle Control Motor (M-)Pulse Signals


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Fig.

PCM Pin #Wire ColorCircuit Description (22 Pin)Value at Hot Idle
1BK/RDDirect Battery (BATT)12-14v
2---Not Used---
3WT/GNData Link Connector (TC)12v
4BK/BLFuel Pump Relay (FPR)Relay Off: 12v, On: 1v
5YLCircuit Opening Relay (FC)0-3v, at off-idle: 12v
6VT/GNMIL (lamp) ControlMIL Off: 12v, On: 1v
7WT/GNETCS Power (+BM)12-14v
8WT/BLEFI Main Relay Power (+B1)12-14v
9BK/ORIgnition Switch Power (IGSW)12-14v
10BK/YLEFI Main Relay ControlRelay Off: 0v, On: 12v
11WTSIL (Scan Tool) SignalDigital Signals
12-15---Not Used---
16WT/BLEFI Main Relay Power (+B1)12-14v
17-18---Not Used---
19BL/WTData Link Connector (WFSE)12v
20-22---Not Used---


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Fig.

PCM Pin #Wire ColorCircuit Description (28 Pin)Value at Hot Idle
1BL/OROverdrive Main SwitchSwitch Off: 12v, On: 1v
2RD/BKA/T Select Switch ReverseIn 'R': 12v, Others: 0v
3BLA/T Select Switch SecondIn 2nd: 12v, Others: 0v
4LGA/T Select Switch LowIn Low: 12v, Others: 0v
5GNData Link Connector12v
6GN/WTStop Light Switch SignalBrake Off: 0v, On: 12v
7YLHO2S-22 (B2 S2) HeaterHeater Off: 12v, On: 1v
8RD/YLHO2S-12 (B1 S2) HeaterHeater Off: 12v, On: 1v
9BL/RD4WD Detection Transfer (L4)Open: 12v, Closed: 0v
10GY/RDEVAP Vapor Pressure (VSV)12v or 0v
11---Not Used---
12GN/YLTaillight Switch (ELS)Switch Off: 0v, On: 12v
13BL/YLA/C Amplifier Signal (ACT)Clutch On: 1.5v, Off: 12v
14---Not Used---
15GN/ORSpeedometer Indicator (SPD)At 55 mph: 48 Hz
16BL/WTTachometer Signal (TACO)Pulse Signals
17BK/WTStarter Switch Signal (STA)9-11v (cranking)
18---Not Used---
19WT/RDA/T Select Switch DriveIn 'D': 12v, Others: 0v
20PKNeutral Start Switch (NSW)In 'P' or 'N': 0v
21---Not Used---
22RD/GNEVAP Vapor Pressure Sensor2.5-3.1v (with fuel cap off)
23---Not Used---
24YL/RDAT Oil Temperature LampLamp Off: 12v, On: 1v
25BL/YLA/C Amplifier Signal (A/C)Clutch On: 12v, Off: 1.5v
26BL/OROverdrive Indicator LampLamp Off: 12v, On: 1v
27-28---Not Used---


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Fig.

PCM Pin #Wire ColorCircuit Description (17-Pin)Value at Hot Idle
1RDA/T-ECT Solenoid (S1)S1: 3rd or OD: 1v
2WT/BLA/T-ECT Solenoid (S2)S1: 3rd or OD: 1v
3GN/RDA/T-ECT Solenoid (SL)In Lockup: 12-14v
4WTDirect Clutch Speed Input (+)Pulse Signals
5YL/RDA/T Vehicle Speed Sensor (+)AC pulse signals
6-8---Not Used---
9BK/RDA/T-ECT Solenoid (SLT+)Pulse Signals
10BKDirect Clutch Speed Input (-)Pulse Signals
11WT/RDA/T Vehicle Speed Sensor (-)AC pulse signals
12-14---Not Used---
15GN/YLA/T-ECT Solenoid (SLT-)AC pulse signals
16---Not Used---
17RD/YLA/T Oil Temperature SensorAt 68°F: 4-5v


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Fig.

PCM Pin #Wire ColorCircuit Description (24 Pin)Value at Hot Idle
1BRPower Ground (E03)<0.1v
2GN/BKSensor VREF (VC)4.9-5.1v
3YLHO2S-21 (B2 S1) HeaterHeater Off: 12v, On: 1v
4GN/YLHO2S-11 (B1 S1) HeaterHeater Off: 12v, On: 1v
5RDInjector 1 Control2.0-3.3 ms
6WTInjector 2 Control2.0-3.3 ms
7WT/GNEVAP Purge Solenoid (VSV)12v or 0v
8---Not Used---
9BLAccelerator Position Sensor (VPA2)1.8-2.7v
10RD/WTMass Airflow Sensor (VG)1.1-1.5v
11WTHO2S-21 (B2 S1) Signal0.1-1.1v
12BKHO2S-11 (B1 S1) Signal0.1-1.1v
13BK/YLTP Sensor Signal (VTA)0.4-1.0v
14GNECT Sensor Signal (THW)At 180°F: 0.51v
15WTHO2S-22 (B2 S2) Signal0.1-1.1v
16BKHO2S-12 (B1 S2) Signal0.1-1.1v
17BRShield Ground (E1)<0.050v
18GN/WTSensor Ground (E2)<0.050v
19BK/WTMAF Sensor Ground (EVG)<0.050v
20PK/BLTP Sensor Signal (VTA2)2.0-2.9v
21GN/RDAccelerator Position Sensor (VPA)0.25-0.90v
22YL/GNIAT Sensor Signal (THA)At 100°F: 2.60v
23YLHO2S-22 (B2 S2) HeaterHeater Off: 12v, On: 1v
24RD/YLHO2S-12 (B1 S2) HeaterHeater Off: 12v, On: 1v


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Fig.

PCM Pin #Wire ColorCircuit Description (31 Pin)Value at Hot Idle
1GNInjector 3 Control2.0-3.3 ms
2RD/BKInjector 4 Control2.0-3.3 ms
3BLInjector 5 Control2.0-3.3 ms
4YLInjector 6 Control2.0-3.3 ms
5BL/RDInjector 7 Control2.0-3.3 ms
6RD/WTInjector 8 Control2.0-3.3 ms
7WTThrottle Control Motor (M-)Pulse Signals
8RDThrottle Control Motor (M+)Pulse Signals
9BRPower Ground (ME01)<0.1v
10YLCMP Sensor Signal (G2)AC pulse signals
11BK/BLCOP Igniter 1 Control7% duty cycle
12LG/BKCOP Igniter 2 Control7% duty cycle
13BK/YLCOP Igniter 3 Control7% duty cycle
14RD/WTCOP Igniter 4 Control7% duty cycle
15GN/WTCOP Igniter 5 Control7% duty cycle
16PK/BLCOP Igniter 6 Control7% duty cycle
17BKKnock Sensor 2 Signal<0.075v AC
18GYKnock Sensor 1 Signal<0.075v AC
19-20---Not Used---
21BRPower Ground (E01)<0.1v
22RDCKP Sensor Signal (NE-)<0.050v
23WT/GNCKP Sensor Signal (NE+)AC pulse signals
24BL/WTThrottle Control Motor (CL-)Pulse Signals
25PKCOP Igniter 7 Control7% duty cycle
26LGCOP Igniter 8 Control7% duty cycle
27BK/RDIgniter Signal (IGF1)Digital Signal: 0-5-0v
28BK/WTIgniter Signal (IGF2)Digital Signal: 0-5-0v
29BL/BKThrottle Control Motor (CL+)Pulses
30BL/RDShield Ground (GE01)<0.050v
31BRPower Ground (E02)<0.1v


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Fig.

PCM Pin #Wire ColorCircuit Description (31 Pin)Value at Hot Idle
1WT/BLEFI Main Relay Output (+B2)12-14v
2WT/BLEFI Main Relay Output (+B)12-14v
3BK/RDDirect Battery (BATT)12-14v
4BK/BLFuel Pump Relay (FPR)Relay Off: 12v, On: 1v
5BL/WTTachometer Signal (TACO)Pulse Signals
7WT/GNETCS Power (+BM)12-14v
8BK/YLEFI Main Relay Power (+B1)12-14v
9BK/ORIgnition Switch Power (IGSW)12-14v
10YLCircuit Opening Relay (FC)0-3v, at off-idle: 12v
11VT/GNMalfunction Indicator Lamp ControlMIL Off: 12v, On: 1v
12GN/YLTaillight Switch (ELS)Switch Off: 0v, On: 12v
13---Not Used---
14RD/BKCenter Airbag Sensor Assembly (F/PS)Digital Signals
15---Not Used---
16WT/BLEFI Main Relay Power (+B1)12-14v
17---Not Used---
18WTSIL (Scan Tool) SignalDigital Signals
19BL/WTData Link Connector (WFSE)12v
20WT/GNData Link Connector (TC)12v
21RD/BLEVAP Vapor Pressure Sensor (PTNK)2.5-3.1v (with fuel cap off)
22RD/GNAccelerator Position Sensor (VPA)0.25-0.90v
23BLAccelerator Position Sensor (VPA2)1.8-2.7v
26PK/GNAccelerator Pedal Position Sensor (VCPA)<0.050v
27GN/RDAccelerator Pedal Position Sensor (VCP2)<0.050v
28GN/WTAccelerator Pedal Position Sensor (EPA)<0.050v
29LG/RDAccelerator Position Sensor 2 (EPA2)1.8-2.7v


Click image to see an enlarged view

Fig.

PCM Pin #Wire ColorCircuit Description (34 Pin)Value at Hot Idle
1BL/WTPower Ground (HP)<0.1v
2BL/YLA/C Magnetic Clutch Relay (ACMG)Relay Off: 0v, On: 12v
3GNTransmission Control Switch Signal (2L)In 2nd: 12v, Others: 0v
4BL/RDLow Detection Switch (L4)Switch Open: 0v, Closed: 12v
5BL/WTECT Pattern Switch 2nd Position (SNW1)2nd Position: 12v
6WT/GNETCS Power (+BM)12-14v
7---Not Used---
8BL/YLShift Lock ECU Control (L)12v or 0v
9YL/BKPark Neutral Switch Signal (STAR)In P/N: 9-12v
10GN/YLPark Neutral Position Switch (D)In 'D': 12v, Others: 0v
11RD/YLA/T Select Switch Reverse (R)In 'R': 12v, Others: 0v
12---Not Used---
14BL/BKA/C Amplifier Signal (THWO)A/C Off: 12v, On: 1v
15-16---Not Used---
17VT/RDVehicle Speed Sensor (SPD)At 55 mph: 48 Hz
18PK/BKBody Control ECU Signal (MPX1)Digital Signals
19GN/WTStop Light Switch Signal (STP)Brake Off: 0v, On: 12v
20BLShift Lock ECU Control (3)12v or 0v
21-22---Not Used---
23GN/RDShift Lock ECU Control (4)12v or 0v
25PKA/T Oil Temperature IndicatorIndicator Off: 12v, On: 1v
26BL/RDTransponder Amplifier Signal (IMD)Inserting key: pulses
27WT/RDTransponder Amplifier Signal (IMI)Inserting key: pulses
28BL/WTECT Pattern Switch Power SignalPower Position: 12v
29BKBody Control ECU Signal (MPX2)Digital Signals
30---Not Used---
31BLA/C Amplifier Signal (A/CS)Relay Off: 12v, On: 1v
32BK/BLA/C Amplifier Signal (THE)A/C Off: 12v, On: 1v
33BL/BKA/C Switch Signal (ACLD)A/C On: 12v, Off: 0v
34-35---Not Used---


Click image to see an enlarged view

Fig.

PCM Pin #Wire ColorCircuit Description (32 Pin)Value at Hot Idle
1BRPower Ground (E1)<0.1v
2RDThrottle Control Motor (M-)Pulse Signals
3WTThrottle Control Motor (M+)Pulse Signals
4WT/BKPower Ground (ME01)<0.1v
5RD/WTInjector 8 Control2.0-3.3 ms
6BL/RDInjector 7 Control2.0-3.3 ms
7WT/BKPower Ground (E03)<0.1v
11YL/GNNeutral Detection Switch (L4)Switch Open: 0v, Closed: 12v
12BKStart Switch Signal (STSW)Cranking: 9-11v
13-14, 18-20---Not Used---
15BKA/T Solenoid Control (SLU-)Pulse Signals
16PK/GNA/T Solenoid Control (SLU+)Pulse Signals
17BRShield Ground (GE01)<0.050v
21BK/ORGenerator Control (RL)12v
22, 26, 28-31---Not Used---
23GN/WTA/C Lock Sensor (LCK)12v or 0v
24RDCKP Sensor Signal (NE-)<0.050v
25GNCKP Sensor Signal (NE+)AC pulse signals
27YLCMP Sensor Signal (G2+)AC pulse signals
32BLCMP Sensor Signal (G2-)AC pulse signals


Click image to see an enlarged view

Fig.

PCM Pin #Wire ColorCircuit Description (35 Pin)Value at Hot Idle
1BKKnock Sensor 1 Signal (KNK1 - left)<0.075v AC
2WTKnock Sensor 2 Signal (KNK2 - right)<0.075v AC
3YLInjector 6 Control2.0-3.3 ms
4GN/YLHO2S-11 (B1 S1) Heater (HT1A)Heater On: 12v, Off: 0v
5RD/YLHO2S-12 (B1 S2) Heater (HT1B)Heater On: 12v, Off: 0v
6YL/BKETCS Power (+BM)12-14v
7, 12---Not Used---
8GR4WD Switch SignalIn 4WD: 12v
9GN/BKShift Lock ECU Control (D)12v or 0v
10GN/YLShift Lock ECU Control (D)12v or 0v
11RD/BKA/T Select Switch Reverse SignalIn 'R': 1v, Others: 12v
13YL/RDA/C Magnetic Clutch Relay (ACMG)Relay Off: 0v, On: 12v
14YL/GNA/C Amplifier Signal (THWO)A/C Off: 12v, On: 1v
15-16, 20, 30---Not Used---
17VTVehicle Speed Sensor (SPD)At 55 mph: 48 Hz
18PK/BKBody Control ECU Signal (MPX1)Digital Signals
19GN/WTStop Light Switch SignalBrake Off: 0v, On: 12v
21WTHO2S-22 (B2 S2) Signal (OX2B)0.1-1.1v
22WTHO2S-21 (B2 S1) Signal (OX2A)0.1-1.1v
23BKHO2S-11 (B1 S1) Signal (OX1A)0.1-1.1v
25YL/BKHO2S-22 (B2 S2) Heater (HT2B)Heater On: 12v, Off: 0v
26YLTransponder Amplifier Signal (IMD)Inserting key: pulses
27WTTransponder Amplifier Signal (IMI)Inserting key: pulses
28BL/WTECT Pattern Switch Power SignalPower Position: 12v
29BKHO2S-12 (B1 S2) Signal (OX1B)0.1-1.1v
31BL/BKA/C Amplifier Signal (ACT)Relay Off: 12v, On: 1v
32PK/BKA/C Amplifier Signal (THE)A/C Off: 12v, On: 1v
33YL/GNHO2S-21 (B2 S1) Heater (HT2A)Heater On: 12v, Off: 0v
34-35---Not Used---


Click image to see an enlarged view

Fig.

PCM Pin #Wire ColorCircuit Description (34 Pin)Value at Hot Idle
1RDInjector 1 Control2.0-3.3 ms
2WTInjector 2 Control2.0-3.3 ms
3GNInjector 3 Control2.0-3.3 ms
4RD/BLInjector 4 Control2.0-3.3 ms
5BLInjector 5 Control2.0-3.3 ms
6WT/BKPower Ground (E02)<0.1v
7WT/BKPower Ground (E01)<0.1v
8LG/BKIgniter Transistor 2 Control7% duty cycle
9GN/RDIgniter Transistor 1 Control7% duty cycle
10LGIgniter Transistor 8 Control7% duty cycle
11BK/BLIgniter Transistor 4 Control7% duty cycle
12GN/WTIgniter Transistor 5 Control7% duty cycle
13RD/WTIgniter Transistor 7 Control7% duty cycle
14---Not Used---
15GN/YLA/C Relay Control (ACCR)Relay Off: 12v, On: 1v
16WT/BKNeutral Start Switch (NSW)In P/N: 0-3.0v
17PKStarter Switch Signal (STA)In P/N: 0-3.0v
18GN/BKSensor VREF (VC)4.9-5.1v
19GNECT Sensor Signal (THW)At 180°F: 0.51v
20YL/GNIAT Sensor Signal (THA)At 100°F: 2.60v
21BK/YLTP Sensor Signal (VTA1)0.4-1.0v
22---Not Used---
23BL/WTIgniter Signal (IGF2)Digital Signal: 0-5-0v
24BL/BKIgniter Signal (IGF1)Digital Signal: 0-5-0v
25GN/BKIgniter Transistor 3 Control7% duty cycle
26PK/BLIgniter Transistor 6 Control7% duty cycle
27BL/WTEVAP Canister Closed Valve (VSV)12v or 0v
28BK/WTSensor Ground (E2)<0.050v
29BK/YLMAF Sensor Ground (E2G)<0.050v
30RD/WTMass Airflow Sensor (VG)1.1-1.5v
31PK/BLTP Sensor Signal (VTA2)2.0-2.9v
32---Not Used---
33GN/RDFuel Pump Relay Control (FPR)Relay Off: 12v, On: 1v
34YL/RDEVAP Purge Solenoid (VSV)12v or 0v
 
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