Starting System: Specifications Jaguar X-type I рестайлинг

Specifications

Torque Specifications

The function of the starting system is to crank the engine fast enough to allow the engine to start. Heavy cables, connectors and switches are used in the system because of the large currents required.

The starting system consists of a pre-engaged type starter motor, battery, remote control switch (ignition switch) and relay. The operation of the starter relay is controlled by the engine control module (ECM).

To protect the starter motor from damage, the ECM prevents the starter from being engaged when the engine is running. This is done by the ECM inhibiting the starter relay operation.

Vehicles equipped with automatic transmission have a transmission range sensor attached to the circuit which prevents operation of the starter motor unless NEUTRAL or PARK are selected.

USA market vehicles equipped with manual transmission have a clutch pedal start inhibit switch which prevents operation of the starter motor unless the clutch pedal is operated.

The ECM will only operate the starter relay providing the following conditions are met

1. The ignition switch has been in the start position for a predetermined time
2. The security response between the ECM and the instrument cluster (IC) has passed
3. The engine is not running
4. The transmission range switch is in the NEUTRAL or PARK position (vehicles fitted with automatic transmission)
5. The clutch pedal is operated (USA vehicles fitted with manual transmission)

The starter relay remains energized until one of the following occur

1. The maximum cranking time is exceeded
2. The ECM detects an engine running signal
3. The ignition switch is no longer in the start position
4. The transmission range switch is no longer in the NEUTRAL or PARK position (vehicles fitted with automatic transmission)
5. The clutch pedal is released (USA vehicles fitted with manual transmission)
6. The set engine speed is reached (vehicles with 2. 0L engine)
7. The vehicle is cranked for 30 seconds and the engine has failed to start

With the ignition switch in the start position, providing the ECM start conditions are met, the starter relay is energized and the engagement lever moves the pinion into mesh with the engine ring gear teeth. The electrical contacts within the solenoid complete the high power circuit and the starter motor operates to turn the engine.

The sequence of operation is as follows

1. Ignition switch in the start position
2. Starter relay activated by the ECM
3. Voltage provided to the starter motor solenoid
4. Starter solenoid engages the drive pinion to the ring gear
5. Starter solenoid switches the battery current to the starter motor
6. The starter remains engaged until the ECM start conditions are no longer met

Scheme 1

Scheme 2

1. Visually inspect for obvious signs of mechanical and electrical damage.
2. Verify the customer concern by operating the system.
3. Make sure the vehicle is in NEUTRAL or PARK for automatic vehicles, NEUTRAL for manual vehicles. Mechanical Electrical Starter Motor Flywheel Ring Gear Engine Seized Starter Motor Battery Fuse 28 (30A) Fuse 29 (30A) Fuse 92 (10A) Starter relay Transmission range switch Wiring harness(es) Damaged, loose or corroded connectors Engine control module (ECM)
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. The DTC summaries are generated to support the Jaguar approved diagnostic system, but also provide the basis for diagnosis of OBD related concerns using a suitable generic scan tool, in conjunction with the electrical guides. Until the DTC summaries and electrical guides are available, the starting system can only be diagnosed using the Jaguar approved diagnostic system, other than basic electrical faults. For additional information, refer to Dealer technical support.

1. Verify the customer concern by operating the system.
2. Visually inspect for obvious signs of mechanical or electrical damage.
3. Make sure the vehicle is in NEUTRAL or PARK for automatic vehicles, NEUTRAL for manual vehicles.
4. Make sure the clutch pedal is fully depressed for Federal manual vehicles. Visual Inspection Chart Mechanical Electrical Starter Motor Flywheel Ring Gear Engine Seized Starter Motor Battery Fuse 28 (15A) Fuse 29 (30A) Fuse 92 (10A) Starter relay Transmission range switch Clutch switch; manual transmission (USA only) Wiring harness(es) Damaged, loose or corroded connectors Engine control module (ECM)
5. If an obvious cause for an observed or reported concern is found, correct the cause, (if possible) before proceeding to the next step.
6. If the concern is not visually evident, verify the symptom and refer to «Symptom Chart»(ref-311893-S28362988482009040700000) .

Symptom Chart

See also:
• Jacking and Lifting