G1 Check For Fault Repeatability

- Key On.

- Clear all diagnostic trouble codes with the Rotunda New Generation Star (NGS) Tester 007-00500.

- Run the ABS On-Demand Self Test with the Rotunda New Generation Star (NGS) Tester 007-00500.

- Key Off.

- Pull diagnostic trouble codes with the Rotunda New Generation Star (NGS) Tester 007-00500.

- Is either Code C1206 or C1208 obtained?

YES -- Code C1206 is obtained. Open rear axle isolation valve concern is repeatable. Key Off. Go to G2.

Code C1208 is obtained. Shorted rear axle isolation valve concern is repeatable. Key Off. Go to G2.

NO -- Valve concern is intermittent. Key Off. Go to G6.