2001 TOYOTA PRIUS Service Repair Manual

DI±682
± DIAGNOSTICSCOMBINATION METER SYSTEM
2001 PRIUS (RM778U)
4 Check the corresponding switch or ECU.
CHECK:
Check if the corresponding switch or ECU is normal or not.
Ye s
No Corresponding switch or ECU faulty.
Combination meter ECU faulty.
*:
Multiplex communication inputSingle Communication Input
OPEN DOOR WARNINGHI±BEAM INDICATOR
BRAKE WARNINGTURN SIGNAL IND
OUTPUT CONTROL INDICATORSRS WARNING
SHIFT POSITION INDICATORABS WARNING
SEAT BELT WARNINGCHECK ENGINE WARNING
READY INDICATOR
WATER TEMPERATURE WARNING
OIL PRESSURE WARNING
CRUISE CONTROL INDICATOR
TAIL INDICATOR
DISCHARGE WARNING

DI7NN±01
I15530
B9 B8
DI±686
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
TERMINALS OF ECU
BODY ECU
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
FLD e E GBWBPower window (FR LH) is not operatingBelow 1 vFLD e E
(B8±2 ± B9±1)G - B e W ± BPower window (FR LH) is operating downward10 ± 14 v
FLU e E RWWBPower window (FR LH) is not operatingBelow 1 vFLU e E
(B8±3 ± B9±1)R ± W e W ± BPower window (FR LH) is operating upward10 ± 14 v
LUG e E LBWBLuggage compartment door key lock and unlock switch is ONBelow 1 vLUG e E
(B8±5 ± B9±1)L ± B e W-BLuggage compartment door key lock and unlock switch is OFF10 ± 14 v
RX (B8±6)YAVC ± LAN communication circuit±±
PRG (B8±7)B ± RWireless door lock ECU communication circuit±±
RDA (B8±8)LWireless door lock ECU communication circuit±±
HR e E BRWBHorn switch is ONBelow 1 vHR e E
(B8±10 - B9±1)B ± R e W- BHorn switch is OFF10 ± 14 v
BDR ± ± Body ground
(B8±11 - Body ground)W ± L e
Body groundConstant10 ± 14 v
PCTY e E RWWBPassenger door courtesy switch is OFFBelow 1 vPCTY e E
(B8±12 - B9±1)R ± W e W - BPassenger door courtesy switch is ON10 ± 14 v
HCTY e E RWWBEngine hood courtesy switch is OFFBelow 1 vHCTY e E
(B8±13 - B9±1)R ± W e W - BEngine hood courtesy switch is ON10 ± 14 v
LCTY e E RLWBLuggage door courtesy switch is OFFBelow 1 vLCTY e E
(B8±14 - B9±1)R ± L e W - BLuggage door courtesy switch is ON10 ± 14 v
MPX+ (B8±15)GR ± BMultiplex communication circuit±±
MPX± (B8±16)GRMultiplex communication circuit±±
LSWP e E WWBPassenger door unlock detection switch OFF (door unlocked)Below 1 vLSWP e E
(B8±17 - B9±1)W e W - BPassenger door unlock detection switch ON (door locked)10 ± 14 v
LSR e E WLWBRear door unlock detection switch OFF (door unlocked)Below 1 vLSR e E
(B8±18 - B9±1)W ± L e W - BRear door unlock detection switch ON (door locked)10 ± 14 v
SH e E BWWBTheft deterrent system is not operatingBelow 1 vSH e E
(B8±20 - B9±1)B ± W e W - BTheft deterrent system is operating10 ± 14 v
E ± Body ground
(B9±1 - Body ground)W ± B e
Body groundConstantBelow 1 v

± DIAGNOSTICSBODY CONTROL SYSTEM
DI±687
2001 PRIUS (RM778U)Symbols (Terminals No.)
Wiring ColorConditionSTD Voltage (V)
HRLY e E RWWBLight control switch OFFBelow 1 vHRLY e E
(B9±2 - B9±1)R ± W e W - BLight control switch TAIL or HEAD10 ± 14 v
PKBL e E PLWBPassenger side buckle switch ON (belt fastened)Below 1 vPKBL e E
(B9±3 - B9±1)P ± L e W - BPassenger side buckle switch OFF (belt fastened)10 ± 14 v
DKBL e E GOWBDriver side buckle switch ON (belt fastened)Below 1 vDKBL e E
(B9±5 - B9±1)G ± O e W - BDriver side buckle switch OFF (belt fastened)10 ± 14 v
L2 e E GWBDoor lock manual switch OFF or UNLOCKBelow 1 vL2 e E
(B9±7 - B9±1)G e W - BDoor lock manual switch LOCK10 ± 14 v
B e Body ground
(B9±±9 - Body ground)R ± G e
Body groundConstant10 ± 14 v
ACTD e E
(B9±10 - B9±1)R e W - BDriver door is operating10 ± 14 v
TRLY e E LGWBLight control switch OFFBelow 1 vTRLY e E
(B9±11 - B9±1)LG e W - BLight control switch TAIL or HEAD10 ± 14 v
IND e E
(B9±13 - B9±1)LG ± B e
W - BDuring set is theft deterrent system10 ± 14 v
L1 e E GBWBDoor key lock and unlock switch OFF or UNLOCKBelow 1 vL1 e E
(B9±14 - B9±1)G ± B e W - BDoor key lock and unlock switch LOCK10 ± 14 v
UL1 e E RBWBDoor key lock and unlock switch OFF or LOCKBelow 1 vUL1 e E
(B9±15 - B9±1)R ± B e W - BDoor key lock and unlock switch UNLOCK10 ± 14 v
UL2 e E LBWBDoor lock manual switch OFF or LOCKBelow 1 vUL2 e E
(B9±16 - B9±1)L ± B e W - BDoor lock manual switch UNLOCK10 ± 14 v
H e E RWBLight control switch OFF or TAILBelow 1 vH e E
(B9±17 - B9±1)R e W - BLight control switch HEAD10 ± 14 v
T e E LG BWBLight control switch OFFBelow 1 vT e E
(B9±18 - B9±1)LG ±B e W ± BLight control switch TAIL or HEAD10 ± 14 v

DI62G±07
DI±688
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
PROBLEM SYMPTOMS TABLE
POWER WINDOW CONTROL SYSTEM
SymptomSuspect AreaSee page
All the power windows does not operate.
3. Master switch circuit
4. Driver door ECU with master switch
5. Body ECUDI±724
DI±730
IN±41
Power window does not operate.1. Power window switch circuit
2. Body ECUDI±726
IN±41
DOOR LOCK CONTROL
SymptomSuspect AreaSee page
Lock or unlock cannot be operated with door lock control S/W.
1. Door lock control switch circuit
(Master switch)
2. Body ECUDI±706
DI±724
IN±41
Door key linked function does not operate.1. Door key lock and unlock switch circuit
2. Body ECUDI±708
IN±41
Key confinement prevention function does not operate.1. Key unlock switch circuit
2. Body ECUDI±695
IN±41
Does not lock and unlock each door only.1. Door lock motor circuit
2. Body ECUDI±712
IN±41
Luggage compartment door opener function does not operate.1. Luggage component door courtesy switch circuit
2. Body ECUDI±722
IN±41
WIRELESS DOOR LOCK CONTROL
SymptomSuspect AreaSee page
All function of wireless door lock control system do not operate.
1. Transmitter
2. Wireless tuner circuit
3. Key unlock warning switch circuit
4. Body ECUBE±83
DI±728
DI±695
IN±41
Lock (or unlock) function does not operate.
1. Door key lock and unlock switch circuit
2. Door unlock detection switch circuit
3. Body ECUDI±708
DI±710
IN±41
Automatic lock function operates even if any door is opened within
30 seconds after all doors are unlocked by wireless door lock
control system .1. Door courtesy switch circuit
2. Body ECUDI±714
IN±41
ILLUMINATED ENTRY
SymptomSuspect AreaSee page
Illuminated entry does not operate.
1. Driver door courtesy switch circuit
2. Illuminaction circuit
3. Body ECUDI±714
DI±702
IN±41
HEADLIGHT AND TAILLIGHT SYSTEM:
SymptomSuspect AreaSee page
Headlight does not light up.
1. Light control switch circuit
2. Headlight control relay circuit
3. Body ECUDI±689
DI±693
IN±41
Taillight does not light up.
1. Light control switch circuit
2. Taillight control relay circuit
3. Body ECUDI±689
DI±691
IN±41
Auto turn±off system does not operate.1. Driver door courtesy switch circuit
2. Body ECUDI±714
IN±41