Test 10AB20

TEST 10AB20: CHECK FOR SHORT IN VALVE RELAY CONTROL HARNESS
1) Disconnect connector (F50) from relay box.
2) Measure resistance between ABS Control Module (ABSCM) connector and chassis ground.
Connector & terminal: (F49) No. 27 & Chassis ground
CHECK: Is the resistance more than 1 M ohm?
YES: Test 10AB21
NO: Repair harness between ABSCM and relay box, and check fuse No. 18.