LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Anti-Lock Brake System) >> Diagnostic Tests >> DTC C1233, C1234, C1235, C1236: Wheel Speed Input Signal Missing (1999 Models)

DTC C1233, C1234, C1235, C1236: Wheel Speed Input Signal Missing (1999 Models)

WARNING: This page is about a different car, the 1999 Mercury Mystique, 1999 Mercury Cougar, 1999 Ford Contour, 1998 Mercury Mystique, and 1998 Ford Contour. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check suspect ABS wheel speed sensor mounting. Check for excessive dirt, obstructions and damage. If sensor and mounting are okay, go to next step. Repair any obstructions, damage or mounting problems. Clear DTCs. Repeat self-test.
  2. Check toothed sensor indicator ring for bent sensor ring, missing or damaged teeth, correct mounting and proper alignment with ABS sensor. Check air gap and bearing endplay. Repair as necessary. If bearing endplay and toothed sensor indicator ring are okay, go to next step.
  3. Turn ignition on. Connect NGS tester. Clear DTCs. Turn ignition off. Turn ignition on. While driving at various speeds, for at least 10 miles, monitor appropriate wheel PID (LF_WSPD, RF_WSPD, LR_WSPD or RR_WSPD). If PID reads the same under all conditions, clear DTCs. Repeat self-test. If DTC C1233, C1234, C1235 or C1236 is retrieved, replace Hydraulic Control Unit (HCU). Repeat self-test. If no DTCs are retrieved, system is operating normally. Repeat self-test. If PID does not read the same under all conditions, replace appropriate wheel speed sensor. Clear DTCs. Repeat self-test
scientia non olet · About LEMON Manuals