Toyota RM787U, Руководство по обслуживанию и ремонту

Страница: 695 / 1976

DI-8
- DIAGNOSTICS ENGINE
162
Author: Date:
2001 SIENNA (RM787U)
4. FAIL-SAFE CHART
If any of the following codes is recorded, the ECM enters fail-safe mode.
DTC No. Fail-Safe Operation Fail-Safe Deactivation Conditions
P0100 Ignition timing fixed at 10
° BTDC
Returned to normal condition
P0110 Intake air temperature is fixed at 20
°
C (68
°
F) Returned to normal condition
P0115 Engine coolant temperature is fixed at 80
°C (176°F)
Returned to normal condition
P0120 VTA is fixed at 0
°
The following condition must be repeated at least 2 times
consecutively
(a) Vehicle speed: 0 km/h (0 mph)
(b) VTA 0.1 V and 0.95 V
P0135
P0141
P0155
The heater circuit in which an abnormality is detected is
turned off
Ignition switch OFF
P0325
P0330
Max. timing retardation Ignition switch OFF
P1300 Fuel cut IGF signal is detected for 6 consecutive ignitions
5. 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.
(1) Clear the DTC (See step 2).
(2) Set the check mode (See step 3).
(3) Perform a simulation test (See page IN-21 ).
(4) Check the connector and terminal (See page IN-31 ).
(5) Handle the connector (See page IN-31 ).
6. 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.
1 Is battery positive voltage 11 V or more when engine is stopped ?
NO Charge or replace battery.
YES