Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
The navigation system is inoperative	Smart junction box (SJB) fuse(s): 7 (10A). 12 (5A). Battery junction box (BJB) fuse 30 (40A). Circuitry. Audio unit.	GO to PINPOINT TEST A .
The navigation system does not operate correctly - no reverse tracking	Circuitry. Smart junction box (SJB). Audio unit.	GO to PINPOINT TEST B .
The navigation system does not operate correctly - no speedometer signal	Circuitry. Audio unit.	GO to PINPOINT TEST C .
The navigation system does not operate correctly - no global positioning system (GPS) antenna signal	Audio unit. Circuitry. GPS antenna.	GO to PINPOINT TEST D .
The navigation system does not operate correctly - the display screen is inoperative	Smart junction box (SJB) fuse(s): 7 (10A). 12 (5A). Battery junction box (BJB) fuse 30 (40A). Circuitry. Audio unit.	GO to PINPOINT TEST A .
The navigation system does not operate correctly - the navigation system is inaccurate	Map compact disc (CD). Calibration. Audio unit. Global positioning system (GPS) antenna.	GO to PINPOINT TEST E .
The navigation system does not operate correctly - the fuel economy and energy flow screens do not display real time data	Medium speed controller area network (CAN). Instrument cluster.	GO to PINPOINT TEST F .
The navigation system does not operate correctly - the fuel economy and energy flow screens cannot be selected or do not remain selected	Circuitry. Audio control protocol (ACP) module.	GO to PINPOINT TEST G .