Symptom Chart

SYMPTOM	POSSIBLE CAUSES	ACTION
Warning message/gearbox fault displayed on instrument cluster	Transfer case system fault	Using the manufacturer approved diagnostic system, perform routine - Inline diagnostic unit 2 non-intrusive test -Transfer case Pass - Recheck operation Fail - Refer to the relevant DTC index
Whining noise	Transfer case bearing/chain wear	Using the manufacturer approved diagnostic system, perform routine - Noise, vibration and harshness sensor diagnostic test - Transfer case Refer to the appropriate service information and install a new transfer case chain Refer to TRANSFER CASE REAR OUTPUT SHAFT BEARING and install a new transfer case rear output shaft bearing