Toyota Yaris: Transfer System / Problem Symptoms Table

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Drivetrain / Gf1a (transfer / 4wd / Awd) / Transfer System / Problem Symptoms Table

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.

Transfer System

Symptom	Suspected Area	Link
Noise in transfer	Oil (level low)
	Backlash improperly adjusted
	Preload improperly adjusted
	Tooth contact improperly adjusted
	Front transfer driven pinion bearing (wear)
	Ring gear mounting case bearing (wear)
Oil leak from transfer	Oil (level too high)
	Gasket (damaged)
	Transfer case front oil seal (for LH Side) (worn or damaged)
	Transfer case front oil seal (for RH Side) (worn or damaged)
	Front drive shaft oil seal RH (worn or damaged)
	O-ring (worn or damaged)

Precaution

PRECAUTION PRECAUTION (a) Before disassembling the transfer assembly, thoroughly clean it to remove any foreign matter. This will help prevent contamination inside the transfer during disassembly and reassembly...

Engine & Hybrid System

h..

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: If a problem occurs in certain locations or at certain times of day, check for the possibility of wave interference. When the electrical key transmitter sub-assembly is brought near a smart door control receiver assembly (RF band), door outside handle assembly (LF band), indoor electrical key antenna (LF band) or any of the electrical key antennas (LF band), the possibility of wave interference decreases...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid (B279986)

DESCRIPTION If there is a communication malfunction between the ECM and ID code box (immobiliser code ECU), or when the communication ID codes do not match, the ECM stores this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area Note B279986 Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid Either of the following conditions is met (1 trip detection logic*): A malfunction is detected in the communication or communication lines between the ECM and ID code box (immobiliser code ECU)...