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
|
ResultResult
| Proceed to
|
NG
| A
|
OK (w/ Multi-information Display)
| B
|
OK (w/o Multi-information Display)
| C
|
| A |
|
|
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
