Trouble shootin outline By Ed Borland
ROOF SWITCH FAILURE SYMPTOMS
by Ed Borland
Normal Roof Open Cycle
Ignition in “Run” or Engine Running, with the truck stopped.
Brake pressed down
Console ”Open” button pressed
The windows start to go down
The roof storage compartment cover unlatches (when the windows are down past the Indent Position).
The windows go down fully
The roof storage compartment cover opens
The roof storage compartment extension extends
The roof unlatches from the header
The roof retracts into the storage compartment
The roof storage compartment cover closes and latches
Two “Dings” indicate the open cycle is complete.
Normal Roof Close Cycle
Ignition in “Run” or Engine Running, with the truck stopped.
Brake pressed down
Console ”Close” button is pressed
The windows go down (if not already down)
The roof storage compartment unlatches
The roof storage compartment cover opens
The roof rises to the closed position
The roof is latched to the header
The roof storage compartment cover extension retracts
The roof storage compartment covers closes and latches.
Two “Dings” indicate the open cycle is complete.
Roof Switch Descriptions:
The roof system has 6 switches:
1- console switch
2 - Roof “Outer Latch Actuator” micro switches, located in the center of the windshield header.
1 - “Striker” SPDT switch, located on the left side of the windshield header.
2 - Storage Compartment latch micro switches, located in the latch assembly on each side of the storage compartment.

Open circuit tests were performed on the switches to determine the roof operation symptoms if a switch failed to close as designed.
Roof Operation Failure - Symptoms and Causes
Symptom 1. Starting with the roof closed.
The roof open cycle operates normally until the roof unlatches and the roof stops operating.
The roof does not separate from the header.
The console switch will re-close the roof fully.
DIC indication - none
Cause - Outer Latch Actuator “Latched” micro switch circuit failure.
See photo 1
Symptom 2. Starting with the roof closed.
The roof open cycle operates normally until the roof is unlatched, the roof opens a few inches and the roof stops operating.
The console switch will re-close the roof fully.
DIC indication - Roof Cycle Timeout
Cause - Striker switch “Over Center” contact circuit failure - See photo 2
Symptom 3. Starting with the roof open or closed. The storage compartment unlatches and the roof stops operating.
Cause - Storage Compartment Latch micro switch circuit failure
See photos 3 & 4
Symptom 4. Starting with the roof open.
The roof will close normally until the roof latches and the roof stops operating, leaving the roof storage compartment open.
DIC indication - Roof cycle timeout
The console switch will re-open the roof fully
Cause - Outer Latch Actuator “Released” micro switch circuit failure
See photo 1
Symptom 5. Starting with the roof open. The storage compartment is unlatched and the roof stops operating.
The console switch will re-open the roof fully.
DIC indication - none
Cause - Outer Latch Actuator “Latched” micro switch failure - See photo 1
Note: 1. Symptom 5 is the same as Symptom 3. The much more frequent cause of the failure would be symptom 3, the Storage Compartment Latch micro switch. The micro switch operating rod hangs up in the “pushed in” mode. See Photo 4
Attached Thumbnails
Jack