Check Mode Procedure

U250E AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: CHECK MODE PROCEDURE

HINT
Check mode has a higher sensitivity to malfunctions and can detect malfunction 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.

1. DTC CHECK (CHECK MODE)

HINT
Techstream only: Compared to the normal mode, the check mode is more sensitive for detecting malfunctions. Furthermore, the same diagnostic items which are detected in the normal mode can also be detected in the check mode.

(a) Procedure for Check Mode using Techstream.

(1) Check the initial conditions.

* Battery positive voltage 11 V or more

* Throttle valve fully closed

* Transaxle in the P or N position

* A/C switch is off

(2) Turn the ignition switch off.

(3) Connect Techstream to the DLC3.

(4) Turn the ignition switch to the ON position and turn the Techstream main switch ON.





(5) Enter the following menus: Powertrain / Engine and ECT / Utility / Check Mode.

NOTICE:
All DTCs and freeze frame data recorded will be erased if: 1) Techstream 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 the ON position to ACC position or turned OFF.

(6) Start the engine (the MIL goes off after the engine starts).

(7) Perform "MONITOR DRIVE PATTERN" for the ECT test Monitors, Trips, Drive Cycles and Readiness Codes, or simulate the conditions of the malfunction described by the customer.

NOTICE:
Leave the ignition switch to the ON position until you have checked the DTCs, etc.

(8) After simulating malfunction conditions, use the Techstream diagnosis selector to check the DTCs and freeze frame data, etc.

(9) When you use Techstream: Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

(10) After checking the DTC, inspect the applicable circuit.

(11) Automatic Transaxle System - U250E to confirm the details of the DTCs.

2. DTC CLEAR

(a) Connect Techstream to the DLC3.

(b) Turn the ignition switch to the ON position and turn the Techstream main switch ON.

(c) When you use Techstream: Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Clear.

HINT
When operating Techstream to erase the codes, the DTCs and freeze frame data will be erased. (See the Techstream instruction book for operating instructions.)