Toyota Camry Manual page 1359

DI–332
WIRING DIAGRAM
Refer to DTC P0440 (Evaporative Emission Control Malfunction) on page DI–311.
INSPECTION PROCEDURE
HINT:
D
If DTCs P0441, P0446, P0450 or P0451 is output after DTC P0440, first troubleshoot DTCs P0441,
P0446 ,P0450 or P0451. If no malfunction is detected, troubleshoot DTC P0440 next.
D
Read freeze frame data using TOYOTA hand–held tester or OBD II scan tool. Because freeze frame
records the engine conditions when the malfunction is detected, when troubleshooting it is useful for
determining whether the vehicle was running or stopped, the engine warmed up or not, the air–fuel
ratio lean or rich, etc. at the time of the malfunction.
D
When the ENGINE RUN TIME in the freeze frame data is less than 200 seconds, carefully check the
VSV for EVAP, charcoal canister and vapor pressure sensor.
1 Check voltage between terminals VC and E2 of ECM connector
(See page DI–311, step 9).
OK
2 Check voltage between terminals PTNK and E2 of ECM connectors
(See page DI–311, step 10).
NG
3 Check for open and short in harness and connector between vapor pressure
sensor and ECM (See page IN–31).
OK
Replace vapor pressure sensor.
DIAGNOSTICS – ENGINE (1MZ–FE)
NG Check and replace ECM (See page IN–31).
OK Check and replace ECM (See page IN–31).
NG Repair or replace harness or connector.
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