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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P1637: Generator "L" Terminal Circuit ("Y" Body) >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.

An intermittent problem can be caused by misrouted harness, rubbed-through wire insulation or broken wire inside insulation. DTCs P1637 and P1638 may set at the same time depending on failure. Also, the "L" terminal circuit can cause DTC P1638 to set.

A generator fault, such as a shorted output diode, malfunctioning regulator, open or shorted rotor, or open sense lead or battery feed may cause a low battery charge.

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