CHECK MODE PROCEDURE
HINT:
Techstream only:
Compared to normal mode, check mode is more sensitive to malfunctions. Therefore, check mode can detect malfunctions that cannot be detected in normal mode.
NOTICE:
All the stored DTCs and freeze frame data are cleared if: 1) the ECM is changed from normal mode to check mode or vice versa; or 2) the ignition switch is turned from ON to ACC or off while in check mode. Before changing modes, always check and note any DTCs and freeze frame data.
1. CHECK MODE PROCEDURE
(a) Check and ensure the following conditions:
(1) Battery voltage is 11 V or higher.
(2) Throttle valve is fully closed.
(3) Shift lever is in P or N.
(4) A/C switch is off.
(b) Turn the ignition switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch to ON.
(e) Turn the Techstream on.
(f) Enter the following menus: Powertrain / Engine / Utility / Check Mode.
(g) Switch the ECM from normal mode to check mode.
(h) Check that the MIL flashes as shown in the illustration.
(i) Start the engine.
(j) Check that the MIL turns off.
(k) Simulate the conditions of the malfunction described by the customer.
(l) Check DTCs and freeze frame data using the Techstream.
System Diagram
SYSTEM DIAGRAM
Communication Table
Transmitting ECU
(Transmitter)
Receiving ECU
(Receiver)
Signal
Communication Method
Combination meter
Power management control ECU
...
Precaution
PRECAUTION
1. PRECAUTION FOR DISCONNECTING THE BATTERY CABLE
NOTICE:
When disconnecting the cable from the negative (-) battery terminal, initialize
the following systems after the cable is reconnected:
System
See Procedure
...
System Diagram
SYSTEM DIAGRAM
Communication Table
Sender
Receiver
Signal
Line
ECM
Combination Meter ECU
CRUISE main indicator operation signal
SET indicator operation sig ...