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)
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The ignition switch is ON
IG power source voltage is 9...
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Other information:
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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.
