C3 Check Grounds

- Measure resistance between pin C1-4, circuit 31 (BK) and a known good ground.

- Measure resistance between pin C1-6, circuit 91 (BK/Y) and a known good ground.

- Is the resistance between the two ground pins and ground less than 5 ohms?

YES -- Go to C4. C4 Check ABS Brake Indicator

NO -- Service open or partial open in circuit 31 (BK) or circuit 91 (BK/Y). Restore vehicle. Clear DTCs and retest.