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:
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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.
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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 |
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...
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:
CUSTOMIZE PARAMETERS CUSTOMIZE POWER MIRROR CONTROL SYSTEM NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Record the current settings before customizing.
HINT: The following items can be customized...
DESCRIPTION If a malfunction is detected in the power supply circuit, the skid control ECU (brake actuator assembly) stores this DTC and the fail-safe function prohibits ABS operation. This DTC is stored when the +BS terminal voltage deviates due to a malfunction in the power supply or charging circuit such as the auxiliary battery or alternator circuit, etc...
Categories
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.

Full
1/4 Full
Empty
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