DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT FUSE (ECU-B1)
CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY)
CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND)
DTC B2620 ECU Power Source Circuit Malfunction
DESCRIPTION
The ECU power source circuit supplies positive voltage to the multiplex tilt and telescopic ECU.
| DTC Code | Detection Condition | Trouble Area |
| B2620 | The ECU power source voltage drops to 8 V or less and this condition continues for 10 sec. or more. | ECU-B1 fuse
Harness or connector
Multiplex tilt and telescopic ECU
|
WIRING DIAGRAM
INSPECTION PROCEDURE
Remove the ECU-B1 fuse from the main body ECU.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| ECU-B1 fuse | Always | Below 1 Ω |
| 2.CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY) |
Disconnect the E27 multiplex tilt and telescopic ECU connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| E27-9 (ECUB) - Body ground | Always | 11 to 14 V |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 3.CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND) |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| E27-11 (GND) - Body ground | Always | Below 1 Ω |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK | |
| |
| REPLACE MULTIPLEX TILT AND TELESCOPIC ECU ()
|
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