Where is the computer located on a 1998 Jeep Cherokee?

Where is the computer located on a 1998 Jeep Cherokee?

Begin replacing the PCM of your 1998 Jeep Grand Cherokee by locating the module. The coolant reserve/overflow tank will be in the way but the location of the PCM is on the cowl panel in the right/rear side of the engine compartment.

What is ECU in a Jeep Cherokee?

Jeep engine computer modules (ECM) are a type of electronic control unit (ECU), which are embedded in all vehicles. The benefits of all ECUs include precise, highly efficient control of electrical systems and subsystems within your Cherokee, yielding greater delivery of power, fuel efficiency, and smoother maneuvering.

How do you reset the PCM on a Jeep Cherokee?

Jeep ECU Reset Procedure

1. Disconnect the battery by removing the positive battery cable.
2. Ground the positive cable to the negative cable for 30 seconds to erase the electric charge in the capacitors.
3. Reconnect the positive cable to the battery.
4. Turn the key to on but do not start.
5. Turn the headlights on.

What is the ECU on my Jeep?

The Electronic Control Module, or ECU as it is most commonly called, is a generic term used for any embedded system within a vehicle that controls one or more electric system(s) or subsystem(s).

How much does it cost to replace a pcm?

In some cars, there are multiple computers, and with other cars, there are just a few. The PCM controls more than 100 factors in your car, and for that reason, is very important – and expensive. A typical pcm replacement cost comes to between $500 and $1,500 on average.

What happens if engine control module is bad?

If there’s something wrong with the ECM, the fuel settings and ignition timings of the engine can potentially get thrown off. This can negatively affect the performance of the vehicle in a variety of ways, such as reduced power and fuel efficiency.

How do I reset my Jeep computer?

Jeep Wrangler JK: How to Reset Your ECU

1. Step 1 – Remove the positive (red) battery cable.
2. Step 2 – Ground the red cable to the negative terminal.
3. Step 3 – Reconnect the positive battery cable.
4. Step 4 – Turn on your Jeep.
5. Step 5 – Cycle the headlights.
6. Step 6 – Turn the key off and remove.

What is difference between ECM and PCM?

Most people, including automobile technicians, confuse the two for each other. The main difference between the two is that the ECM controls specific parts of the engine, regulating and sending commands. While the PCM is used in newer models to control almost all engine functions.

Where is the clutch relay on a Jeep Cherokee?

Online Manual Jeep > Jeep Cherokee > Jeep Cherokee (XJ) > 1984 – 1991 > ELECTRICAL COMPONENT LOCATOR 1988 ELECTRICAL COMPONENT LOCATOR Jeep Electrical Component Locations Cherokee, Comanche & Wagoneer COMPONENT LOCATOR CHARTS A/C Clutch Relay On right front wheelwell. Under right side of dash, on evaporator housing.

What is the name of the engine control module?

Upfront, Transparent Price. ( 5) The engine control module (ECM), also commonly referred to as the engine control unit (ECU) or powertrain control module (PCM), is one of the most important components found on virtually all modern vehicles. It essentially functions as the main computer for many of the vehicle’s engine performance

Where are the electrical components in a jeep?

In left rear side of intake manifold. On left side of torque converter clutch. On left side of bellhousing. In master cylinder. In coolant overflow bottle. In oil pan. On front/rear of differential. In power steering pump reservoir. In rear portion of transfer case. On fill plug (M/T) or dipstick (A/T). On bottom of windshield washer reservoir.

Where are the fuses on a Jeep Cherokee?

Fuse C Taped to engine wiring harness, by alternator. Fuse D Taped to engine wiring harness, near power steering switch. Cruise Control Under left side of dash, near brake pedal. Radio Under center of dash, behind radio. On side of fuse block. Under dash, above brake pedal. Elect. Control Unit (ECU) Under dash, above accelerator pedal.