ANTI-LOCK BRAKE SYSTEM (ABS) 5A4-31 Chart A-2 Uneven Braking Occurs While ABS Works Chart A-3, TA-3 The Wheels Are Locked Step Action Yes No 1 Is there play in each sensor? Go to Step 2 Repair. Go to Step 5 2 Damage or powdered iron sticking to each sensor/sensor rotor? Go to Step 3 Repair. Go to Step 5 3 Is the output of each sensor normal? (Refer to chart C-1 or TC-1) Go to Step 4 Replace sensor or repair harness. Go to Step 5 4 Is brake pipe connecting order correct? Replace EHCU. Go to Step 5 Reconnect brake pipe correctly. Go to Step 5 5 Reconnect all components, ensure all components are properly mounted. Was this step finished?
Repeat the “Basic diagnostic flow chart.” Go to Step 5 Step Action Yes No 1 Is ABS working? Go to Step 2 Go to Step 4 2 Is vehicle speed under 10 km/h (6mph)? Go to Step 3 Normal. 3 Is sensor output normal? (Chart C-1 or TC-1) Go to Step 4 Replace sensor or repair harness. Go to Step 5 4 Is hydraulic unit grounded properly? Replace hydraulic unit. Go to Step 5 Correct. Go to Step 5 5 Reconnect all components, ensure all components are properly mounted. Was this step finished? Repeat the “Basic diagnostic flow chart.” Go to Step 5