Meter / Gauge System - Entire Combination Meter Does Not Operate
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT FUSE (MET, ECU-B1)
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY AND BODY GROUND)
METER / GAUGE SYSTEM - Entire Combination Meter does not Operate
DESCRIPTION
This circuit is the power source circuit for the combination meter. This circuit provides 2 power source types: one is a constant power source mainly used as a backup power source, and the other is a power source mainly used for signal transmission. The constant power source is mainly used as a backup power source for the meter CPU. However, it is also used for communication. If a voltage of 12 V is not applied to terminal IG+ when the ignition switch isON, indicators will not operate.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT FUSE (MET, ECU-B1) |
Remove the MET and ECU-B1 fuses from the engine room relay block.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| MET fuse | Always | Below 1 Ω |
| ECU-B1 fuse |
| 2.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY AND BODY GROUND) |
Disconnect the E7 meter connector.
Measure the resistance and voltage according to the value(s) in the tables below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| E7-15 (ET) - Body ground | Always | Below 1 Ω |
- Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
| E7-17 (B) - Body ground | Always | 11 to 14 V |
| E7-18 (IG+) - Body ground | Ignition switch ON |
Result| Result | Proceed to |
| NG | A |
| OK (w/ Multi-information Display) | B |
| OK (w/o Multi-information Display) | C |
| | REPLACE COMBINATION METER ASSEMBLY ()
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| | REPLACE COMBINATION METER ASSEMBLY ()
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| A | |
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| REPAIR OR REPLACE HARNESS OR CONNECTOR |
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