1999 TOYOTA CAMRY Service Repair Manual

Page 2249 of 4592

TOYOTA CAMRY 1999  Service Repair Manual DI±98
± DIAGNOSTICSENGINE
DTC P1245 Fuel Fuel Shutoff Valve Circuit for Pressure
Regulator Malfunction
CIRCUIT DESCRIPTION
Refer to DTC P1190 on page DI±86.
DTC No.DTC Detecting ConditionTrouble Ar

Page 2250 of 4592

TOYOTA CAMRY 1999  Service Repair Manual A09277
FC ON
(±) (+)
A09424
ON
VCNG2
(±)
(+) E01
± DIAGNOSTICSENGINE
DI±99
3 Check circuit opening relay (Marking: CIR OPN) (See Pub. No. RM654U, page
SF±41).
NG  Replace circuit opening relay.
O

Page 2251 of 4592

TOYOTA CAMRY 1999  Service Repair Manual A09277
FC ON
(±) (+)
DI±100
± DIAGNOSTICSENGINE
6 Check fuel shutoff valve for fuel pressure regulator (See page SF±30).
NG Replace  fuel shutoff valve for fuel pressure reg-
ulator.
OK
Check for

Page 2252 of 4592

TOYOTA CAMRY 1999  Service Repair Manual A09424
ON
VCNG2
(±)
(+) E01
± DIAGNOSTICSENGINE
DI±101
OK Go to step 4.
NG
Check for open in harness and connector between EFI main relay (Marking: EFI) and circuit open-
ing relay (Marking: CIR OP

Page 2253 of 4592

TOYOTA CAMRY 1999  Service Repair Manual DI±102
± DIAGNOSTICSENGINE
DTC P1300 Igniter Circuit Malfunction (No.1)
DTC P1310 Igniter Circuit Malfunction (No.2)
CIRCUIT DESCRIPTION
The ECM determines the ignition timing, turns on Tr1 at a pre

Page 2254 of 4592

TOYOTA CAMRY 1999  Service Repair Manual A09399
IG Switch
B±R
BatteryEngine Room
J/B No.2
763
1IG3
B
BR
Spark Plug
Spark Plug
2
3 2
3 4
Tr2 Igniter
No.1
No.1 Ignition 
Coil with Igniter
FL Block
Y±R
BR
C
20
19
IGT2
Tr1
E6
E6
E6
W±R
IGT1
I

Page 2255 of 4592

TOYOTA CAMRY 1999  Service Repair Manual A09288BE6653A09269
ON
IGF
(±) (+)
A09287BE6653A09268
START
IGT2
IGT1
(±) (+) DI±104
± DIAGNOSTICSENGINE
3 Disconnect ignition coil with igniter connector, and check voltage between ter-
minal IGF

Page 2256 of 4592

TOYOTA CAMRY 1999  Service Repair Manual FI6680
IGT and IGF Signal Waveforms
10 msec./Division (Idling) IGT
0 V
IGF
0 V2 V/
Division
A09287BE6653A09268
START
IGT2
IGT1
(±) (+)
BE6653A01761A01861
ON
START
1 (±) (+)
± DIAGNOSTICSENGINE
DI±