Contents Wiring diagrams Section: Body Electrical All sections

Power Outlets: Overview Chevrolet Silverado 1500

Body Electrical 10 illustrations ~285 words

Scheme 180

Scheme 180: Cigar Lighter/Auxiliary Outlets Schematics

Scheme 181

Scheme 181

Scheme 182

Scheme 182

Scheme 183

Scheme 183

Scheme 184

Scheme 184

Scheme 185

Scheme 185: Power Outlet Component Views
CalloutComponent Name
1Cigar Lighter
2Instrument Panel
3Auxiliary Power Outlet - Front

Callouts For (Scheme 185)

Scheme 186

Scheme 186
CalloutComponent Name
1Auxiliary Power Outlet - Front Connector
2S333
3S307
4S303
5Rear Seat Audio (RSA) Controller Connector
6Auxiliary Power Outlet - Console Connector
7Audio Amplifier Connector C2 (UQ7)
8Audio Amplifier Connector C1 (UQ7)
9Cigar Lighter
10C306
11Noise Compensation Microphone (UQ7 w/Y91)
12Speaker - Subwoofer Connector
13Speaker - Subwoofer (UQ7)

Callouts For (Scheme 186)

Scheme 187

Scheme 187
CalloutComponent Name
1Auxiliary Power Outlet Switch (HP2)

Callouts For (Scheme 187)

Scheme 188

Scheme 188
CalloutComponent Name
1Auxiliary Power Outlet 120-Volt AC - Interior (HP2)
2Energy Storage Box (ESB)

Callouts For (Scheme 188)

Scheme 189

Scheme 189
CalloutComponent Name
1Auxiliary Power Outlet 120-Volt AC - Exterior (HP2)

Callouts For (Scheme 189)

Circuit/System Description

The auxiliary power outlet (APO) switch controls the operation of the hybrid control module (HCM) APO state manager. The APO state manager commands one of 3 states from the starter generator control module (SGCM), (APO Off, APO Normal, APO Continuous). The APO switch is a momentary button, its output signal an input to an HCM analogue channel. Five volts are supplied to the switch, the returned voltage is measured relative to HCM signal ground to determine the switch state. A resistor network in the switch circuitry ensures that shorted high and low states can be diagnosed successfully. There are 2 valid voltage ranges of the return signal, one representing switch open, the other representing switch closed. If the voltage is lower than a threshold, a short low is indicated. Similarly, if the voltage is greater than the short high threshold, a short 'high' is indicated.

The SGCM uses the interlock circuit to monitor the plugs and connectors for hybrid system function. The interlock indicates the state of the connectors in the 120 voltage circuits. In the SGCM, the primary side of the transformer is connected to a low frequency oscillator circuit. When the loop is complete, the shorted secondary reduces the oscillator voltage, and a comparator senses this as a good and complete interlock loop. If the loop is open, the oscillator amplitude increases and the comparator senses this as a problem. Short Circuits, Overloads and Ground Fault Detection (GFD)