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Problem Symptoms Table

WARNING: This page is about a different car, the 2004 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.

PROBLEM SYMPTOMS TABLE - CRUISE CONTROL SYSTEM

Symptom Suspect Area
Main switch cannot be turned ON. (Cruise indicator light in combination meter is not lit.)
  • 3. Cruise control switch circuit
  • 4. CRUISE MAIN indicator light circuit
  • 5. ECM
Vehicle speed setting cannot be done. (Although indicator light in combination meter is lit when the main switch is turned ON, they go off when vehicle speed is set.)
  1. Cruise control switch circuit
  2. ECM
Setting cannot be done. (Indicator light in combination meter is lit when the main switch is turned ON and they remain ON while setting.)
  1. Cruise control switch circuit
  2. Stop lamp switch circuit
  3. PNP switch circuit A750 A340
  4. Combination meter system
  5. 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. Vehicle speed sensor circuit
  3. Stop lamp switch circuit
  4. CRUISE MAIN indicator light circuit
  5. PNP switch circuit A750 A340
  6. ECM
Hunting (Speed is not constant.)
  1. Vehicle speed sensor circuit
  2. ECM
Setting cannot be cancelled. (When Coast, Acceleration, Resume, Set speed change and Control switch are operated.)
  1. Cruise control switch circuit
  2. ECM
DTC is not output, or is output when should not be.
  1. Diagnosis circuit
  2. ECM
CRUISE MAIN indicator light does not light up.
  1. Cruise control switch circuit
  2. CRUISE MAIN Indicator light circuit
  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