Pinpoint Test KP: Charge Air Cooler (CAC): Introduction
WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 2021 Ford F-150, 2020 Lincoln Navigator, 2020 Lincoln Nautilus, 2020 Lincoln MKZ, and 2020 Lincoln Corsair. However, it is still accessible from the selected car via links, so may be relevant.
This pinpoint test is intended to diagnose the following:
- CAC coolant temperature sensor (12A648)
- CAC pump (8501)
- harness circuits: CAC, CACCTS, SIGRTN, PUMPPWR and GND
TEMPERATURE SENSOR VOLTAGE AND RESISTANCE SPECIFICATIONS
| Temperature | Temperature Sensor Values | |
|---|---|---|
| °C | °F | Resistance (K ohms) |
| 120 | 248 | 1.18 |
| 110 | 230 | 1.55 |
| 100 | 212 | 2.07 |
| 90 | 194 | 2.80 |
| 80 | 176 | 3.84 |
| 70 | 158 | 5.37 |
| 60 | 140 | 7.70 |
| 50 | 122 | 10.97 |
| 40 | 104 | 16.15 |
| 30 | 86 | 24.27 |
| 20 | 68 | 37.30 |
| 10 | 50 | 58.75 |
| 0 | 32 | 95.85 |
| -10 | 14 | 160.31 |
Harness Side
| Circuit | Pin |
|---|---|
| CACCTS (Charge Air Cooler Coolant Temperature Signal) | 2 |
| SIGRTN (Signal Return) | 1 |
Harness Side
| Circuit | Pin |
|---|---|
| PUMPPWR (Pump Power) | 4 |
| GND (Ground) | 1 |
| CAC (Charge Air Cooler) | 3 |
Harness Side
| Circuit | Pin |