Test 8W9
TEST 8W9: CHECK FOR OPEN OR SHORT IN RELAY BOX POWER CIRCUIT
1) Disconnect connector (ABS1) from hydraulic unit.
2) Connect connector (F8) to relay box.
3) Turn ignition switch to ON.
4) Measure voltage of relay box.
Connector & terminal: Valve relay installing point No. 87 & Chassis ground
CHECK: Is the voltage between 10 and 13 Volts?
YES: Test 8W10
NO: Replace relay box and check fuse No. 19.