DTC 7

DTC 7: ENGINE SPEED SIGNAL OPEN CIRCUIT OR SHORT

Circuit Description
PCM (Powertrain Control Module) converts signals from the crankshaft position sensor into the engine speed signals (pulse) and sends these to the control unit and tachometer.

Diagnostic Aids
- Inspect the wiring for poor electrical connections at the control unit connector. Look for possible bent, backed out, deformed, or damaged terminals. Check for weak terminal tension as well.
Also check for a chafed wire that could short to bare metal or other wiring. Inspect for a broken wire inside the insulation.
- When diagnosing for a possible intermittent short or open condition, move the wiring harness while observing test equipment for a change.
- Check harness routing for a potential short to ground in circuit BLK/RED.

DTC 7 ENGINE SPEED SIGNAL OPEN CIRCUIT OR SHORT





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