Possible Causes
| Possible Causes |
|---|
| (Q977) HEADER LATCHED LIMIT SWITCH SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (Q977) HEADER LATCHED LIMIT SWITCH SIGNAL CIRCUIT OPEN |
| (Z907) GROUND CIRCUIT OPEN |
| HEADER LATCH LIMIT SWITCH |
| HEADER LATCH MOTOR |
| POWER TOP CONTROL MODULE (PTCM) |
Always perform the Power Top System Pre-Diagnostic procedure before proceeding. See DTC-Based Diagnostics/MODULE, Power Top Control (PTCM) - Standard Procedure .