Toyota RAV4 Service Manual: Check mode procedure
- Description
- Check mode has a higher sensitivity to malfunctions
and can detect malfunctions that normal mode
cannot detect. Check mode can also detect all the
malfunctions that normal mode can detect. In check
mode, dtcs are detected with 1 trip detection logic.
- Check mode procedure
- Make sure that the following conditions below are
met:

- Battery positive voltage 11 v or more
- Throttle valve fully closed
- Transaxle in the p or n position
- A/c off
- Turn the ignition switch off.
- Connect the intelligent tester to the can vim. Then
connect the can vim to the dlc3.
- Turn the ignition switch on and turn the tester on.
- Enter the following menus: diagnosis /
enhanced obd ii / check mode.

- Change the ecm to check mode. Make sure the
mil flashes as shown in the illustration.
Notice:
All dtcs and freeze frame data recorded will be
erased if: 1) the intelligent tester is used to
change the ecm from normal mode to check
mode or vice versa; or 2) during check mode,
the ignition switch is turned from on to acc or
off.
Before check mode, make notes of the dtcs
and freeze frame data.
- Start the engine. The mil should turn off after the
engine starts.
- Perform "monitor drive pattern" for the ect
test (see page ax-19).
(Or, simulate the conditions of the malfunction
described by the customer.)
- After simulating the malfunction conditions, use the
tester to check the dtc and freeze frame data.
Check dtc
Dtcs which are stored in the ecm can be displayed
with the intelligent tester.
The intelligent tester can display pending dtcs and
current dtcs. Some dtcs are not stored ...
Fail-safe chart
This function minimizes the loss of the ect functions
when a malfunction occurs in a sensor or solenoid.
Automatic transmission fluid (atf) temperature
sensor:
when the ...
Other materials:
Diagnostic trouble code chart (2006/01- )
Hint:
When the air conditioning system functions properly, dtc
b1400/00 is output.
Hint:
*1: Dtc b1422/22 (compressor lock sensor circuit) is
indicated only for a currently occurring malfunction for 2grfe.
To confirm dtc b1422/22, perform the following steps:
With the ignition swit ...
Components
...
Inspection
Inspect generator brush holder assembly
Using a vernier caliper, measure the brush length.
Standard length:
9.5 To 11.5 Mm (0.374 To 0.453 In.)
Minimum length:
4.5 Mm (0.177 In.)
If the brush length is less than the minimum, replace
the generator brush holder assembly.
Inspe ...