Diagnostic Aids

The following conditions may cause an intermittent:

• Intermittent open or short to ground in circuit No. 1493 (Dark Blue wire).
• Intermittent open in circuit No. 1550 (Black wire).
• Faulty performance shift switch.
• Poor connections at performance shift switch or BCM.
• Internal open or short in BCM.

To check for problems in PERF SHIFT indicator light circuits, see appropriate INSTRUMENT PANELS article.