Symptom Chart: Notes
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2008 Jaguar S-Type, 2007 Jaguar S-Type, 2006 Jaguar S-Type, 2005 Jaguar S-Type, and 2004 Jaguar S-Type. However, it is still accessible from the selected car via links, so may be relevant.
Charging system faults/codes and related causes
| Condition | Possible Source | Action |
|---|---|---|
| DTC P1146 Low input from the engine control module (ECM) on the voltage regulator request signal wire. Vehicles fitted with 2.5L or 3.0L engine. | Wiring harness. Generator. ECM. |
Refer to Pinpoint Test A . |
| DTC P1244 Generator overcharging. Vehicles fitted with 2.5L or 3.0L engine. | Battery. Wiring harness. Generator. Fuse 15 (5A) Primary junction fuse box. Circuit. |
Refer to Pinpoint Test B . |
| DTC P1632 Charging system failure. Vehicles fitted with 2.5L or 3.0L engine. | Accessory drive belt. Wiring harness. Fuse 15 (5A) Primary junction fuse box. Circuit. Generator. Battery. ECM. |
CHECK drive belt tension. For additional information, refer to Accessory Drive
. Refer to Pinpoint Test C . |
| DTC P1632 Charging system failure. Vehicles fitted with 4.2L engine. | Accessory drive belt. Wiring harness. Electrical connector. Fuse 30 (5A) rear power distribution box. Battery. Generator. ECM. |
CHECK drive belt tension. For additional information, refer to Accessory Drive
. Refer to Pinpoint Test D . |
| DTC P1629 Generator load monitoring signal failure. Vehicles fitted with 2.5L or 3.0L engine. | Electrical connector. Wiring harness. Generator. ECM. |
Refer to Pinpoint Test E . |
| The charging system warning indicator is on, intermittent or flickers with the engine running. Vehicles fitted with 4.2L engine. | Accessory drive belt. Wiring harness. Fuse 15 (5A) Primary junction fuse box. Battery (warning light on with low voltage). Generator. ECM. Instrument cluster (IC). Control area network (CAN). |
CHECK drive belt tension. For additional information refer to Accessory Drive
. Refer to Pinpoint Test F . |
| The charging system warning indicator is on, intermittent or flickers with the engine running. Vehicles fitted with 2.5L or 3.0L engine. | Accessory drive belt. Wiring harness. Fuse 15 (5A) Primary junction fuse box. Battery (warning light on with low voltage). Generator. ECM. Instrument cluster (IC). Control area network (CAN). |
CHECK drive belt tension. For additional information refer to Accessory Drive
. Refer to Pinpoint Test G . |
| Generator not charging battery keeps going flat. | Drive belt Wiring harness. Battery. Fuse 15 (5A) Primary junction fuse box . Generator. Generator pulley (vehicles fitted with manual transmission). |
CHECK drive belt tension. For additional information refer to Accessory Drive
. Refer to Pinpoint Test H . |
| Generator noisy | Generator. Drive belt. Drive belt tensioner |
CHECK drive belt tension. For additional information refer to Accessory Drive
. Refer to Pinpoint Test I . |
| Radio interference | Wiring harness Generator |
Refer to Pinpoint Test J . |