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Problem Symptoms Table

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Cruise control system 

CRUISE CONTROL SYSTEM

Symptom Suspected Area See
Main switch cannot be turned ON. (Indicator light on combination meter does not illuminate.) 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. CRUISE main indicator light circuit CRUISE MAIN INDICATOR LIGHT CIRCUIT 
3. ECM TERMINALS OF ECM 
Speed cannot be set. (Indicator light on combination meter illuminates when main switch is turned ON, but turns off when operating SET function.) 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. ECM TERMINALS OF ECM 
Speed cannot be set. (Indicator light on combination meter illuminates when main switch is turned ON and remains ON while operating SET function.) 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. Stop light switch circuit DTC P0571 Stop Light Switch Circuit Malfunction 
3. PNP switch circuit DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT); DTC P0850 PARK/NEUTRAL SWITCH INPUT CIRCUIT
4. Combination meter system PROBLEM SYMPTOMS TABLE
5. ECM TERMINALS OF ECM 
6. Vehicle speed sensor DTC P0500 VEHICLE SPEED SENSOR "A"; DTC P0503 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH
While driving with cruise control, set speed is canceled. (Indicator light remains ON.) 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. Vehicle speed sensor circuit DTC P0500 VEHICLE SPEED SENSOR "A"; DTC P0503 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH
3. Stop light switch circuit DTC P0571 Stop Light Switch Circuit Malfunction 
4. CRUISE main indicator light circuit CRUISE MAIN INDICATOR LIGHT CIRCUIT 
5. PNP switch circuit DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT); DTC P0850 PARK/NEUTRAL SWITCH INPUT CIRCUIT
6. ECM TERMINALS OF ECM 
Hunting occurs. (Speed is not constant.) 1. Vehicle speed sensor circuit DTC P0500 VEHICLE SPEED SENSOR "A"; DTC P0503 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH
2. ECM TERMINALS OF ECM 
Speed setting cannot be canceled. (CANCEL function fails.) 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. ECM TERMINALS OF ECM 
DTC is not output, or is output when it should not be. 1. TC and CG terminal circuit TC AND CG TERMINAL CIRCUIT 
2. ECM TERMINALS OF ECM 
CRUISE main indicator light does not illuminate. 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. CRUISE main indicator light circuit CRUISE MAIN INDICATOR LIGHT CIRCUIT 
3. ECM TERMINALS OF ECM 
4. Combination meter assembly PROBLEM SYMPTOMS TABLE
Cruise control cannot be canceled by decreasing speed so that it is below low speed limit. 1. Vehicle speed sensor circuit DTC P0500 VEHICLE SPEED SENSOR "A"; DTC P0503 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH
2. ECM TERMINALS OF ECM 
Cruise control cannot be canceled by operating shift lever. 1. PNP switch circuit DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT); DTC P0850 PARK/NEUTRAL SWITCH INPUT CIRCUIT
2. ECM TERMINALS OF ECM 
Cruise control cannot be canceled even when brake pedal is depressed. 1. Stop light switch circuit DTC P0571 Stop Light Switch Circuit Malfunction 
2. ECM TERMINALS OF ECM