Electronic Engine Controls

Electronic Engine Controls
1. Verify the customer concern by operating the system.
2. Visually inspect for obvious signs of mechanical and electrical damage.

Visual Inspection Chart

Mechanical Electrical
- Engine oil level - Fuses. (9, 31, 32, 37)
- Cooling system coolant level - Wiring harness
- Fuel Contamination - Electrical connector(s)
- Throttle body - Sensor(s)
- Powertrain control module (PCM)

3. Verify the following systems are working correctly:
- Air intake system
- Cooling system
- Charging system
- Fuel charging system

4. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
5. If the concern is not visually evident and the approved Jaguar diagnostic system is not available, use a fault code reader to retrieve the fault codes before proceeding to the Diagnostic Trouble Code (DTC)s Index Chart.
6. Make sure that a power supply is present to the PCM from fuse 32 of the engine compartment fuse box before carrying out diagnostic work on the electronic engine control system.