Operation CHARM: Car repair manuals for everyone.

Service Hints

A20 (A), A21 (B), A22 (C) ABS AND TRACTION ECU
(A) 3, (A) 9, (A)10, (C) 24-GROUND : Always continuity
(B) 6-GROUND : 10-14 Volts with traction cut SW released
(B)11-GROUND : 10-14 Volts with ignition SW at ON position
(B)16-GROUND : 10-14 Volts with stop light SW ON
(B) 4-GROUND : Continuity volts with parking brake lever pulled up (Parking brake SW ON)

A4 (A), A5 (B) ABS ACTUATOR
(A) 1, (A) 2, (A) 4, (A) 5, (A) 6, (A) 7, (A) 8, (A) 9, (A)10, (A)11, (A)12-GROUND : Approx. 1.2 Ohms (Ignition SW OFF)
(B) 1-GROUND : Always continuity
(B) 5-GROUND : 4-6 Ohms (Ignition SW OFF)

S13 STOP LIGHT SW
2-1 : Closed with brake pedal depressed

A8, A9, A31, A32 ABS SPEED SENSOR FRONT LH, RH, REAR LH, RH
1-2 : 0.9-1.3 K Ohms (20° C, 68° F)

P4 PARKING BRAKE SW
1-GROUND : Closed with parking brake lever pulled up