Mechanics

CONVERTABLE TOP

1999 Jaguar XK8

1999 Jaguar XK8 V8 80000 miles

Top will open automatically but has trouble going all the way open. Top has complete problem going closed. Is this hydraulics? What information is available for this problem.
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Ocrigger
April 27, 2009.



Check the list of most common convertible top failures and ensure none of the following are the problem: Ensure that battery is fully charged.
Ensure convertible top pump is switched to automatic. Ensure that manual operation valve on the side of the pump is turned fully clockwise.
Ensure that all relays located in trunk fuse/relay box are installed properly.
Ensure all fuses located in trunk fuse/relay box are okay.
Ensure that all connectors including the Orange and Blue solenoid connectors are clean and tight and attached to the hydraulic pump.
Ensure that convertible top operation has been returned to automatic operation if it has been manually operated.
Ensure latch claw is positioned correctly in relation to the convertible top position. If claw position is incorrect, it is an indication that system logic is not synchronized. To correct problem, manually reposition the claw to correct position. For example, if claw is in a raised position, move it to the lowered position.
Some switches have similar failure problems when the top is operated in one direction, but no 2 switches have the same failure problem in both directions.
TOP WILL NOT RAISE
Symptom

Pressing the top control switch has no effect on the convertible top system or rear quarter glass.
Possible Causes

Low battery voltage or blown fuse. Ignition is off or faulty. Short circuit in top raised switch. Top control switch faulty. Body Processor Module (BPM) is not receiving signal from top switch. Top ready-to-latch or top raised switch input to BPM is shorted to ground. Instrument cluster is indicating wrong vehicle speed. The BPM is not sending open/close message. Standard Corporate Protocol (SCP) failure (module communication system failure).

Dave H
Nov 29, 2009.