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:
Audio can be heard from the vehicle’s speakers by connecting a
commercially-available portable audio unit to the auxiliary jack.
A commercially-available, non-impedance (3.5Ø)
stereo mini plug cable is required. Contact your Toyota dealer for details...
DESCRIPTION Symptom Trouble Area Check CAN Communication Connection
CAN main bus line, CAN branch line or connector
Power source circuit of central gateway ECU (network gateway ECU)
Central gateway ECU (network gateway ECU) ground circuit
Central gateway ECU (network gateway ECU)
Power source circuit of DLC3
DLC3 ground circuit
WIRING DIAGRAM
CAUTION / NOTICE / HINT CAUTION: When performing the confirmation driving pattern, obey all speed limits and traffic laws...
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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