Toyota Yaris: Meter / Gauge System / Entire Combination Meter does not Operate
DESCRIPTION
This circuit is the power source circuit for the combination meter assembly. This circuit provides two types of power sources; one is a constant power source, and the other is an IG power source.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
- Inspect the fuses of circuits related to this system before performing the following procedure.
PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
(a) Disconnect the H6 combination meter assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| H6-19 (EP) - Body ground | Always | Below 1 Ω |
| H6-23 (ES) - Body ground | Always | Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| H6-38 (IG+) - Body ground | Ignition switch off | Below 1 V |
| Ignition switch ON | 10.5 to 16 V | |
| H6-22 (B) - Body ground | Ignition switch off | 11 to 14 V |
| OK |
 | REPLACE COMBINATION METER ASSEMBLY |
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lost Communication With ECM/PCM "A" Missing Message (U010087,U011487,U012987,U013187,U014087,U015187,U016887,U023587,U023A87,U111287,U113387)
DESCRIPTION The combination meter assembly communicates with each ECU via CAN communication. DTC No. Detection Item DTC Detection Condition Trouble Area U010087 Lost Communication With ECM/PCM "A" Missing Message Diagnosis Condition:
The ignition switch is ON
IG power source voltage is 9...
Speedometer Malfunction
DESCRIPTION The combination meter assembly receives vehicle speed signals from the skid control ECU (brake actuator assembly) via CAN communication. The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU (brake actuator assembly)...
Other information:
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION When troubleshooting a vehicle with the diagnosis system, the only difference from the usual troubleshooting procedure is connecting the GTS to the vehicle and reading various data output from the vehicle's skid control ECU (brake actuator assembly)...
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Inspect the fuses and relays related to this system before inspecting the suspected areas below. 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...
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Fuel Gauge
The fuel gauge shows approximately how much fuel is remaining in the tank when the ignition is switched ON. We recommend keeping the tank over 1/4 full.
