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Problem Symptoms Table

If a normal system code is displayed during the DTC check but a problem still occurs, check each circuit and component for the problem symptom in the order shown in the table below.

HINT:

Inspect the fuses and relays before confirming the suspected areas which are shown in the chart below. Inspect the relevant circuits and component in numerical order. If the problem still exists even after inspecting all the circuits and components and confirming that they are all normal, replace the hybrid vehicle control ECU.

PROBLEM SYMPTOMS TABLE - CRUISE CONTROL SYSTEM

Symptom Suspected Area
ON-OFF button cannot be pushed on. (CRUISE main indicator light on the combination meter does not come on.)
  1. Cruise control switch circuit
  2. CRUISE main indicator light circuit
  3. Combination meter
  4. Hybrid vehicle control ECU
Vehicle speed cannot be set. (Indicator light on the combination meter comes on when ON-OFF button is pushed on, but it goes off when vehicle speed is set.)
  1. Cruise control switch circuit
  2. Hybrid vehicle control ECU
Setting cannot be done. (Indicator light on the combination meter comes on when ON-OFF button is pushed on, and it remains on while setting.)
  1. Cruise control switch circuit
  2. Stop lamp switch circuit (DTC P0571)
  3. Shift position sensor circuit (DTC P0705)
  4. Combination meter
  5. Hybrid vehicle control ECU
Cruise control is cancelled while driving. (CRUISE main indicator light remains on.)
  1. Cruise control switch circuit
  2. Vehicle speed sensor circuit (DTC P0500)
  3. Stop lamp switch circuit (DTC P0571)
  4. CRUISE main indicator light circuit
  5. Hybrid vehicle control ECU
Hunting occurs. (Speed is not constant.)
  1. Vehicle speed sensor circuit (DTC P0500)
  2. Hybrid vehicle control ECU
Setting cannot be cancelled (when functions such as COAST, ACCEL, RESUME, set speed change are operated with control switch).
  1. Cruise control switch circuit
  2. Hybrid vehicle control ECU