What Is the Function and Troubleshooting Process of the Coolant Temperature Indicator System and Coolant Temperature Sensor on Pontiac G5?

The coolant temperature system includes a dashboard warning light or gauge, and an engine coolant temperature (ECT) sensor. It also works as the coolant temperature-sending unit for the Powertrain Control Module (PCM). If overheating is indicated, check the coolant level and wiring harness connectors. When the ignition is turned to START, the light should come on, showing the bulb works. If it doesn't, the bulb may be burned out, the ignition switch faulty, or the circuit open. When turning on the engine, the light should go off; if not, the engine is overheating. If it stays on, there could be a grounded wire, a defective sending unit, or a faulty ignition switch. Also, check the coolant mix, as high water content may not activate the sending unit.

Genuine Pontiac G5 Coolant Temperature Sensor

Coolant Water Temperature Sensor

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Pontiac G5 Sensor Assembly, Engine Coolant Temperature
Part Number: 12608814
$30.52 MSRP: $57.58
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Product Specifications
- Other Name: SENSOR, Coolant Temperature (Engine Unit)
- Replaces: 15369305, 25037062, 12191170, 15326388
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2010 Pontiac G5 | 2 DOOR, 4 DOOR, GT 2 DOOR, GT 4 DOOR, LS 2 DOOR, LS 4 DOOR, SE 2 DOOR, SE 4 DOOR, SPORT 2 DOOR, SPORT 4 DOOR | 4 Cyl 2.2L, 4 Cyl 2.4L

Pontiac G5 Coolant Temperature Sensor

Pontiac G5 Coolant Temperature Sensor continuously monitors the amount of heat in the coolant to ensure that the engine computer maintains the smooth running of the car and prevents overheating. This is a small Coolant Temperature Sensor that is powered by a small thermistor installed in the coolant stream and which varies its electrical resistance with temperature and that live signal is applied by the engine control unit to optimize the fuel injection and ignition timing to produce the maximum power at the minimum cost. As the readings increase, the ECU will enrich the mixture or retard the spark in order to lose the unnecessary heat whereas the colder readings will result in leaner blends to ensure that the Pontiac engine remains within its safe operating range. All G5 manufactured are based on the same 2-wire Coolant Temperature Sensor layout and therefore, there would be no significant style difference to trace and, therefore, makes locating parts and troubleshooting easy. The fact that the Coolant Temperature Sensor continuously feeds the data stream means that the dashboard gauges and warning lights are updated in time, which informs drivers about heat problems in good time. A failed Coolant Temperature Sensor can be replaced easily and provides the accurate feedback of temperature and protects a Pontiac against damages that unregulated heat may bring about, and this makes a G5 reliable in daily commute.

Each OEM Pontiac G5 Coolant Temperature Sensor we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Pontiac G5 Coolant Temperature Sensor Parts Questions & Experts Answers

Sensor Assembly, Engine Coolant Temperature
12608814
Q: What Is the Function and Troubleshooting Process of the Coolant Temperature Indicator System and Coolant Temperature Sensor on Pontiac G5?
A:
The coolant temperature system includes a dashboard warning light or gauge, and an engine coolant temperature (ECT) sensor. It also works as the coolant temperature-sending unit for the Powertrain Control Module (PCM). If overheating is indicated, check the coolant level and wiring harness connectors. When the ignition is turned to START, the light should come on, showing the bulb works. If it doesn't, the bulb may be burned out, the ignition switch faulty, or the circuit open. When turning on the engine, the light should go off; if not, the engine is overheating. If it stays on, there could be a grounded wire, a defective sending unit, or a faulty ignition switch. Also, check the coolant mix, as high water content may not activate the sending unit.