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DTC 32: Engine Speed Signal

NOTE: If MIL indicator is on, go to SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - 3.2CL article in ENGINE PERFORMANCE. If ABS indicator is on, retrieve ABS DTCs and go to ABS DIAGNOSTIC TESTS .
  1. Disconnect PCM 32-pin connector "A" and ABS/TCS control unit 16-pin connector "B". Using DVOM, check for continuity on Blue wire between ground and PCM 32-pin connector "A" terminal No. 19. If continuity is indicated, repair short circuit to ground in Blue wire between PCM 32-pin connector "A" terminal No. 19 and ABS/TCS control unit 16-pin connector "B" terminal No. 11. See Figure and Figure . See WIRING DIAGRAMS . If continuity is not indicated, go to next step.
    NOTE: Use an analog voltmeter set to 10-volt scale for following steps.
  2. Reconnect PCM 32-pin connector "A". Start engine and warm up to operating temperature. Allow engine to idle. Measure voltage between ground and PCM 32-pin connector terminal No. 19 (Blue wire). If about 6 volts is indicated, go to next step. If voltage is not as specified, check for poor connections at PCM. Repair as necessary. If connections are okay, substitute known-good PCM and retest system.
  3. With engine idling, measure voltage between ground and ABS/TCS control unit 16-pin connector "B" terminal No. 11 (Blue wire). If voltage is about 6 volts, system is functioning properly at this time. If problem reoccurs, substitute known-good ABS/TCS control unit and retest system. If voltage is not as specified, repair open circuit in Blue wire between PCM 32-pin connector terminal No. 19 and ABS/TCS control unit 16-pin connector "B" terminal No. 11.
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