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Check Auto-Cruise Control-Ecu Terminals

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Auto-Cruise Control-ECU Terminals
G04539454Courtesy of DAIMLERCHRYSLER CORPORATION
AUTO-CRUISE CONTROL-ECU TERMINALS CHECK

TERMINAL NO. CHECK ITEM CHECK CONDITIONS NORMAL CONDITION
1 Throttle position sensor input When accelerator pedal is fully depressed 4.0 - 5.5 V
When accelerator pedal is released 0.4 - 1.0 V
2 Power train control module output (Idle switch) When accelerator pedal is depressed 4.0 - 5.5 V
When accelerator pedal is not depressed 2.5 V or less
3 A/T control output No "OD-OFF" request Battery positive voltage
"OD-OFF" request 0 V
4 Stoplight switch input When brake pedal is depressed Stoplight switch: ON Battery positive voltage
When brake pedal is not depressed Stoplight switch: OFF 0 V
5 Pump power supply Ignition switch: "ON" position Stoplight switch: OFF 10 V or more
6 ECU power supply Ignition switch: "ON" position Battery positive voltage
7 Release valve When decelerating with the "SET" switch while driving at constant speed 1 V or less
8 Control valve 10 V or more
7 Release valve When canceling constant speed driving with the CANCEL switch 10 V or more
8 Control valve Battery positive voltage
9 Auto-cruise control switch input MAIN switch: "ON" Approximately 7.0 V
When input switch has not been operated All switches: "OFF" 3.5 - 5.0 V
When input switch is pushed down SET switch: "ON" 0.4 - 2.3 V
When input switch is pushed up RESUME switch: "ON" 2.3 - 3.5 V
When input switch is pulled forward CANCEL switch: "ON" 0.4 V or less
10 Vehicle speed sensor input When vehicle is moved forwards and backwards, sensor turns ON and OFF repeatedly When sensor is ON 0 V
When sensor is OFF 8 - 12 V(1)
12 ECU power supply Ignition switch: "ON" position MAIN switch: "ON" Battery positive voltage
13 Clutch pedal position switch input < M/T > When pedal is not depressed Clutch pedal position switch: OFF Battery positive voltage
When pedal is depressed Clutch pedal position switch: ON 0 V
Transmission range switch input < A/T > When select lever is in a position other than N range Transmission range switch: OFF Battery positive voltage
When select lever is in N range Transmission range switch: ON 0 V
14 Ground At any time 0 V
15 Indicator light input (inside combination meter) When indicator light is illuminated 0 V
When indicator light is switch off Battery positive voltage
16 Auto-cruise vacuum pump motor input When driving at constant speed using the SET switch Motor stopped/running Battery positive voltage/0 V
When accelerating with the RESUME switch while driving at constant speed Motor stopped/running Battery positive voltage/0 V
When decelerating with the SET switch while driving at constant speed Motor stopped Battery positive voltage
When canceling constant speed driving with the CANCEL switch Motor stopped Battery positive voltage
(1) Auto-cruise control-ECU terminal No.10 is sending a voltage of 5 volts to the vehicle speed sensor system circuit. However, as higher voltage is mixed through the circuit a voltmeter will show 8 - 12 V. 
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