BRAKE SYSTEM — Anti-lock Brake System (A.B.S.) BR-71 Anti-lock Brake System Circuit INSPECTION OF SYSTEM CIRCUIT 1. INSPECT SYSTEM CIRCUIT WITH CONNECTOR CONNECTED (a) Remove the glove box and pull out the A.B.S. computer. (b) Using a voltmeter with high impedance (10 kΩ/V minimum), measure the voltage at each terminal and body ground. [CONNECTOR DIAGRAM showing terminals: SRR, IG, BAT, W, SR, ELECT GND, ELL +, GNF FR, FFR, RR+, FSEN RR+, T, PL, INL, +TKR, MR, +LAST, MT, SFR, SFL, SPL, STR] Tester Connection | Condition | Voltage SFL — Body ground | Ignition switch on | Battery voltage | Ignition switch on and "ANTILOCK" warning light goes on | About 0 V SFR — Body ground | Ignition switch on | Battery voltage | Ignition switch on and "ANTILOCK" warning light goes on | About 0 V AST — Body ground | Ignition switch on | Battery voltage | Ignition switch on and "ANTILOCK" warning light goes on | About 0 V FESN — Body ground | Ignition switch on | Battery voltage W — Body ground | Ignition switch on | Battery voltage | Ignition switch on and "ANTILOCK" warning light goes on | About 0 V SRR — Body ground | Ignition switch on | Battery voltage | Ignition switch on and "ANTILOCK" warning light goes on | About 0 V 2. INSPECT SYSTEM CIRCUIT WITH CONNECTOR DISCONNECTED (a) Disconnect the connectors from the computer, inspect at the wire harness side connector.