Meter Troubleshooting; Wrench Lamp Is Lit Continually; The Wrench Lamp Does Not Light; Hour Meter Is Not Displayed - Toyota 8FGU15 Repair Manual

8-178
Control type
Meter
Phenomenon on Malfunction area
vehicle and mode
▪ Fuse:
▪ Meter commu-
▪ SAS/OPS IG
Wrench lamp is lit
continually.
▪ Battery unit:
▪ SAS/OPS con-
▪ Meter unit:
▪ SAS/OPS con-
▪ Meter power
The wrench lamp
does not light even
when the ignition
key switch is turned
ON.
▪ Meter unit:
▪ Hour meter start
▪ Hour meter start
Hour meter is not
displayed.
▪ Meter unit:
Checking method
ECU+B fuse
blown -
ECU-IG fuse
blown
nication line:
Ground short
(Harness, con-
nector)
Disconnection
fault (Harness,
-
connector)
line, +B line,
ground system:
Disconnection
fault (Harness,
connector)
Low voltage, in-
Check battery
take heater,
voltage with the ana-
large current
lyzer.
auxiliary equip-
ment operation
troller setting:
-
Not matched
-
Meter defect
troller:
-
Controller defect
supply line:
-
Disconnection
fault (Harness,
connector, Fuse)
-
Meter defect
connector:
Not connected
-
signal line:
Disconnection
fault (Harness,
connector)
-
Meter defect
8 TROUBLESHOOTING
Corrective action
Check for blown
fuse
Harness check
Keep the engine at
high speed for a
while.
Follow matching pro-
cedure to rematch.
Replace
Replace
Harness check
Replace
Harness check or re-
place connector
Replace