Toyota Camry Manual page 1229

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FAIL–SAFE CHART

If any of the following codes is recorded, the ECM enters fail–safe mode.

Ignition timing fixed at 10° BTDC

Intake air temperature is fixed at 20°C (68°F)

Engine coolant temperature is fixed at 80°C (176°F)

VTA is fixed at 0°

The heater circuit in which an abnormality is detected is

Max. timing retardation

CHECK FOR INTERMITTENT PROBLEMS

TOYOTA HAND–HELD TESTER only:

By putting the vehicle's ECM in check mode, 1 trip detection logic is possible instead of 2 trip detection logic

and sensitivity to detect open circuits is increased. This makes it easier to detect intermittent problems.

Clear the DTC (See page DI–197).

Set the check mode (See page DI–197).

Perform a simulation test (See page IN–21).

Check the connector and terminal (See page IN–31).

Handle the connector (See page IN–31).

BASIC INSPECTION

When the malfunction code is not confirmed in the DTC check, troubleshooting should be performed in the

order for all possible circuits to be considered as the causes of the problems. In many cases, by carrying

out the basic engine check shown in the following flow chart, the location causing the problem can be found

quickly and efficiently. Therefore, use of this check is essential in engine troubleshooting.

Is battery positive voltage 11 V or more when engine is stopped ?

Fail–Safe Operation

ENGINE (1MZ–FE)

Fail–Safe Deactivation Conditions

Returned to normal condition

The following condition must be repeated at least 2 times

consecutively

(a) Vehicle speed: 0km/h (0mph)

(b) VTA y 0.1 V and u 0.95 V

Ignition switch OFF

IGF signal is detected for 6 consecutive ignition

Charge or replace battery.

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