Starters: Diagnosis Jaguar X-type I

PRELIMINARY INSPECTION

Note. Central junction fuse box may also be referred to as passenger junction fuse box.

Verify customer complaint by operating suspected system. Visually inspect for obvious signs of mechanical and electrical damage. For mechanical damage, check for the following

1. Starter motor.
2. Flywheel Ring Gear.
3. Engine Seized.

For electrical damage, check for the following

1. Battery.
2. Clutch pedal safety switch (manual transmissions only).
3. Engine Control Module (ECM)
4. For 2002-03 models, fuses No. 28 (15A) and No. 29 (30A) in the front power distribution fuse box and fuse No. 92 (10A) in the central junction fuse box. See «FUSES & CIRCUIT BREAKERS»(ref-166144) article in ELECTRICAL.
5. For 2004-05 models, fuse No. 34 (30A) in the front power distribution fuse box and fuses No. 31 (15A) and No. 26 (10A) in the passenger junction fuse box. See «FUSES & CIRCUIT BREAKERS»(ref-166161) article in ELECTRICAL.
6. Starter motor.
7. Starter relay.
8. Transmission range sensor (automatic transmissions only).
9. Inspect for loose or corroded connection, damaged wiring harnesses and/or switches. Check for broken or partially broken wires inside insulation, which could cause system malfunction but prove good in a continuity/voltage check with system disconnected.
10. Ensure any aftermarket electronic equipment is properly installed.

If a fault is found, repair as necessary. If no fault is found during a preliminary inspection, see SELF-DIAGNOSTIC SYSTEM for additional information.

SYMPTOMS

Note. For battery disconnect procedure, see BATTERY DISCONNECT PROCEDURE under MISCELLANEOUS. For battery reconnect procedure, see BATTERY RECONNECT PROCEDURE under MISCELLANEOUS.

Note. For circuit and connector identification, see WIRING DIAGRAMS and/or CONNECTOR IDENTIFICATION .

SELF-DIAGNOSTIC SYSTEM

Before performing any repairs, ensure Diagnostic Trouble Codes (DTC) are not set. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If any DTCs are present, diagnose accordingly. If no DTCs are present, diagnose by symptom. See SYSTEM TESTS .

Test Procedure

Note. Check battery condition before performing this test. See BATTERY TESTS under ON-VEHICLE TESTING in GENERATORS & REGULATORS article in ELECTRICAL.

Note. The starter motor will disengage once a start is detected by the ECM.

1. Check Voltage Drop On Positive Battery Cable - Measure voltage between starter motor battery cable terminal and positive battery terminal with ignition key in START position. Is voltage less than 0.5 volts? If yes, go to next step. If no, clean and tighten all positive battery cable connections. Retest system for normal operation. If all positive battery cable connection are clean and tight and condition remains, install a NEW positive battery cable.
2. Check Voltage Drop on Ground Circuit - Measure voltage between starter motor housing and battery negative terminal with ignition key in START position. Is voltage less than 0.5 volts? If yes, replace starter motor. See «STARTER»(ref-167322-S21388943172004101200000) under REMOVAL & INSTALLATION. If no, clean and tighten all negative battery cable connections, starter motor mounting and body to engine ground straps. Retest system for normal operation. If all negative battery cable connection are clean and tight and condition remains, install a NEW negative battery cable.

Note. For battery disconnect procedure, see BATTERY DISCONNECT PROCEDURE under MISCELLANEOUS. For battery reconnect procedure, see BATTERY RECONNECT PROCEDURE under MISCELLANEOUS.

Note. Special tool required: Powertrain Assembly Jack (HTJ1200-2). (Схема №23)