TOYOTA PRIUS 2001 Service Repair Manual

DI±664
± DIAGNOSTICSCRUISE CONTROL SYSTEM
2001 PRIUS (RM778U)
OK
4 Check harness and connector between hybrid vehicle control ECU and cruise
control switch, cruise control switch and body ground
(See page IN±41).
NG Repair or replace harness or connector.
OK
Check and replace hybrid vehicle control
ECU (See page
IN±41).

± DIAGNOSTICSCOMBINATION METER SYSTEM
DI±679
2001 PRIUS (RM778U)
4. Fuel receiver gauge is inoperative or improper
INSPECTION PROCEDURE
1 Fuel gauge diagnosis check. (See page DI±669)
2 Reset inclination sensor. (See page BE±47)
3 Fuel sender gauge check. (See page BE±42)
NG Replace fuel tank.
OK
4 Multiplex communication circuit check. (See page DI±750)
CHECK:
Check if the communication between the combination meter and the multiplex communication circuit is nor-
mal or not.
No Multiplex communication circuit error.
Wire harness faulty.
Ye s
DI7XW±01

I17867
Fuel Sender Gauge Connector
DI±680
± DIAGNOSTICSCOMBINATION METER SYSTEM
2001 PRIUS (RM778U)
5 Check the body ECU.
CHECK:
With the fuel sender gauge connector connected, check if the
voltage between each of terminal 1 (FV), 5 (FR) and 6 (FE) of
the vehicle side wire harness and connector and the body
ground is normal or not.
ConditionTerminalSpecified value
Ignition switch ON1 (FV) ± Body ground4.5 ± 5.5 V
Ignition switch ON5 (FR) ± Body ground0.5 ± 5.5 V
constant6 (FE) ± Body groundContinuity is always iden-
tified.
No Body ECU faulty.
Ye s
Combination meter ECU faulty.