Control System Diagnostic Sheet Reference
Note. Reference values are typical and may vary 10% depending upon current altitude, accessory operation, engine load, operating time, temperature and vehicle speed.
PCM Pin Descriptions and Expected Values
Scheme 167
| Pin # | Name | Key On | Low Idle | High Idle | Operating Range | Comments |
|---|---|---|---|---|---|---|
| 1 | GEN1C | B+ | B+ | B+ | B+ | Generator # 1 Monitor 0 = Fault Detected |
| 2 | IPR | 10.7 | 10.1 | 9.3 | 0 - B+ | Injection Pressure Regulator Control (Pulse Width Modulated) |
| 3 | GPE | 0/B+ | 0/B+ | 0/B+ | 0/B+ | Glow Plug Enable 0 = Relay ON B+ = Relay OFF |
| 4 | GEN2C | B+ | B+ | B+ | B+ | Generator # 2 Monitor (Dual Generator Only) 0 = Fault Detected |
| 5 | N/A | N/A | N/A | N/A | N/A | N/A |
| 6 | FSS | 0 | 5.4 | 5.1 | 0 - VREF | Fan Speed Signal |
| 7 | N/A | N/A | N/A | N/A | N/A | N/A |
| 8 | N/A | N/A | N/A | N/A | N/A | N/A |
| 9 | N/A | N/A | N/A | N/A | N/A | N/A |
| 10 | VGTC | 12.1 | 7.9 | 10.4 | 0 - B+ | Variable Geometry Turbo Actuator Control (Pulse Width Modulated) |
| 11 | VGTCH | B+ | B+ | B+ | B+ | Variable Geometry Turbo Actuator Voltage |
| 12 | EGRTPC | 0-B+ | 0-B+ | 0-B+ | 0-B+ | Electronic Throttle Control Actuator |
| 13 | N/A | N/A | N/A | N/A | N/A | N/A |
| 14 | FC-V | 12.3 | 12.3 | 13.8 | 0 - B+ | Cooling Fan Solenoid Control (Pulse Width Modulated) 0 = ON B+ = OFF |
| 15 | N/A | N/A | N/A | N/A | N/A | N/A |
| 16 | N/A | N/A | N/A | N/A | N/A | N/A |
| 17 | GPD | 0 | 0 | 0 | 0 - VPWR | Glow Plug Control Module/PCM Communication |
| 18 | N/A | N/A | N/A | N/A | N/A | N/A |
| 19 | CKPO | 0 | 5.7V | 5.7V | 0 - 6000 Hz | Buffered Crankshaft Signal Output (To FICM) |
| 20 | CMPO | 0 | 1.0V | 1.2V | 0.5 - 50 Hz | Buffered Camshaft Signal Out (To FICM) |
| 21 | N/A | N/A | N/A | N/A | N/A | N/A |
| 22 | TPWR GND | 0 | 0 | 0 | 0 | Cooling Fan Sensor Signal Return |
| 23 | EGRVC | 12.2 | 11.2 -12.2 | 10.3 | 0 - VPWR | EGR Solenoid Control (Pulse Width Modulated) |
| 24 | EGRTPC2 | 0-B+ | 0-B+ | 0-B+ | 0-B+ | Electronic Throttle Control Actuator |
| 25 | SIGRTN | 0 | 0 | 0 | 0 | Signal Return |
| 26 | CAN2L | 2.1 | 2.1 | 2.2 | 3 - 16 | CAN- Module Communications (PCM to FICM) |
| 27 | EP | 1.0 | 1.2 | 1.4 | 0.4 - 4.7 | Exhaust Pressure Signal 0.9 = 101 kPa (14.7 psi) 4.7 = 365 kPa (53 psi) |
| 28 | FICMM | 1.1 | 2.6 | 2.8 | 1 - 4 | Intermodule Communication Signal (PCM to FICM) |
| 29 | ICP | 0.2 | 1.0 | 1.9 | 0.18 - 4.7 (early build) 0.15 - 4.7 (late build) | Injection Control Pressure Sensor Signal 1.0 = 4.5 MPa (650 psi) 4.7 = 27 MPa (4045 psi) |
| 30 | CKP+ | 1.58V | 1.60V | 1.60V | 0 - 6000 Hz | Crankshaft Position Signal |
| 31 | CMP+ | 0.25V | 0.25V | 0.38V | 0.5 - 50 Hz | Camshaft Position Signal |
| 32 | ECT | 1.9 | 1.9 | 1.1 | 0.3 - 4.7 | Engine Coolant Temperature 4.7 = -40°C (-40°F) 0.8 = 100°C (212°F) |
| 33 | EGRVP | 0.8 | 0.8 - 1.0 | 1.3 | 0.6 - 4.0 | EGR Valve Position Signal |
| 34 | N/A | N/A | N/A | N/A | N/A | N/A |
| 35 | N/A | N/A | N/A | N/A | N/A | N/A |
| 36 | VREF | 5 | 5 | 5 | 5 +/- 0.5 | VREF |
| 37 | CAN2H | 2.9 | 2.9 | 2.9 | 3 - 16 | CAN+ Module Communications (PCM to FICM) |
| 38 | EGRTP | 0.3 | 1.0 | (load dependent) | 0.1 -4.7 | Intake Throttle Position Signal |
| 39 | N/A | N/A | N/A | N/A | N/A | N/A |
| 40 | N/A | N/A | N/A | N/A | N/A | N/A |
| 41 | CKP | 1.5V | 1.6V | 1.6V | 0 - 6000 Hz | Crankshaft Position Signal |
| 42 | CMP/CKP SHD | 0 | 0 | 0 | 0 | CMP/CKP Sensor Shield |
| 43 | CMP | 0.3V | 0.3V | 0.4V | 0.5 - 50 Hz | Camshaft Position Signal |
| 44 | EOT | 2.0 | 2.6 | 1.1 | 0.3 - 4.7 | Engine Oil Temperature 4.7 = -40°C (-40°F) 0.3 = 150°C (302°F) |
| 45 | IAT2 | 2.7 | 3.7 | 2.9 | 0.2 - 4.7 | Manifold Air Temperature 4.3 = 0°C (32°F) 2.5 = 50°C (122°F) |
| 46 | VBPWR | B+ | B+ | B+ | Buffered VBAT | Cooling Fan Speed Sensor Buffered Voltage |
PCM ENGINE HARNESS CONNECTOR PIN DESCRIPTION AND EXPECTED VALUES
