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DTC 64: Simultaneous Drop-Out Of Front Speed Sensor Signal

WARNING: This page is about a different car, the 1998 Isuzu Rodeo, 1998 Isuzu Amigo, and 1998 Honda Passport. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Disconnect EHCU harness 16-pin connector. Using DVOM, measure resistance between EHCU harness 16-pin connector terminals No. 2 (Green wire) and No. 10 (Blue wire). If resistance is 2.0-2.8 k/ohms, go to step 3). If resistance is not as specified, go to step 4).
  2. Measure resistance between EHCU harness 16-pin connector terminals No. 3 (White wire) and No. 11 (Red wire). If resistance is 2.0-2.8 k/ohms, go to next step. If resistance is not as specified, go to step 3).
  3. Check for play in wheel speed sensor or sensor rotor. Also, check for powdered iron sticking to sensor components. Repair as necessary. If no problem is found, go to step 5).
  4. Measure resistance of front left or front right wheel speed sensor. If resistance is 2.0-2.8 k/ohms, repair harness between wheel speed sensor and EHCU. If resistance is not as specified, replace wheel speed sensor.
  5. Check front wheel speed sensors output. See TEST C-1: SENSOR OUTPUT INSPECTION under COMPONENT TESTS. Replace if necessary. If wheel speed sensors check okay, check for faulty harness between wheel speed sensor and EHCU. Repair as necessary and perform system self-check. See ANTI-LOCK SYSTEM SELF-CHECK under DIAGNOSIS & TESTING. If no problem is found, replace EHCU.
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