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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 92 (Engine Controls - Self-Diagnostics - 6.6L Diesel) >> Diagnostic Tests >> DTC P1643: Wait To Start Indicator Control Circuit >> Conditions For Setting DTC

Conditions For Setting DTC

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The voltage on the Wait To Start indicator circuit is high, near battery voltage, when the Wait To Start indicator is requested ON; or the voltage on the Wait To Start indicator control circuit is low, near 0 volts, when the Wait To Start indicator is requested OFF.

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