Pinpoint Test KP: Charge Air Cooler (CAC): Introduction
WARNING: This page is about a different variant/trim than selected.
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 |