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Problem Symptoms Table

WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
PROBLEM SYMPTOMS TABLE - CRUISE CONTROL SYSTEM

Symptom Suspect Area
Main switch cannot be turned ON. (Cruise indicator light in combination meter does not come on.)
  1. Cruise control switch circuit
  2. Spiral cable
  3. Cruise main indicator light circuit
  4. ECM
Vehicle speed setting cannot be done. (Although indicator light in combination meter come on when the main switch is turned ON, it goes off when vehicle speed is set.)
  1. Cruise control switch circuit
  2. Spiral cable
  3. ECM
Setting cannot be done. (Indicator light in combination meter comes on when the main switch is turned ON and it remains ON while setting.)
  1. Cruise control switch circuit
  2. Spiral cable
  3. Stop lamp switch circuit
  4. Park/Neutral position switch circuit (A/T) Clutch switch circuit (M/T)
  5. Combination meter system
  6. ECM
While the vehicle is driving with cruise control, the set control is canceled. (Indicator light and CRUISE remain ON.)
  1. Cruise control switch circuit
  2. Spiral cable
  3. Vehicle speed sensor circuit
  4. Stop lamp switch circuit
  5. Cruise main indicator light circuit
  6. Park/Neutral position switch circuit (A/T) Clutch switch circuit (M/T)
  7. ECM
Hunting (Speed is not constant.)
  1. Vehicle speed sensor circuit
  2. Malfunction in speedometer circuit
  3. ECM
Setting cannot be cancelled. (When Coast, Acceleration, Resume, Set speed change and Control switch are operated.)
  1. Cruise control switch circuit
  2. Spiral cable
  3. ECM
DIAGNOSTIC TROUBLE CODES (DTC) LIST

DTC Description
DTC P0500/21, P0503/23  VEHICLE SPEED SENSOR "A" (INTERMITTENT/ERRATIC/HIGH)
DTC P0571/52  BRAKE SWITCH "A" CIRCUIT
DTC P0607/54  CONTROL MODULE PERFORMANCE