Toyota 4Runner: Problem Symptoms Table

HINT:

• Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
• Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Dtc Check / Clear

DTC CHECK / CLEAR HINT: When using the Techstream with the ignition switch off to troubleshoot: Connect the Techstream to the vehicle and turn the front door courtesy light switch LH ...

Push Switch / Key Unlock Warning Switch Malfunction (B2780)

DESCRIPTION This DTC is stored if the transponder key ECU assembly does not detect that the unlock warning switch assembly is on even when the ignition switch is ON. Under normal conditions, the ...

Other materials about Toyota 4Runner:

Control Module Communication Bus OFF (U0073,U0100,U0114,U0123,U0124,U0126)
DESCRIPTION DTC Code DTC Detection Conditions Trouble Area U0073 One of the following conditions is met: When the IG1 terminal voltage is between 10 and 17.4 V, after the output ...

Clearance Sonar Main Switch Circuit
DESCRIPTION When the back sonar or clearance sonar switch assembly turns on, the on signal is input into the clearance warning ECU assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before pe ...