Lexus ES manuals

Lexus ES: Check For Intermittent Problems

CHECK FOR INTERMITTENT PROBLEMS

HINT:

Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the Techstream when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.

  1. Clear the DTCs.

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  2. Switch the ECM from normal mode to check mode using the Techstream.

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  3. Perform a simulation test.

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  4. Check and wiggle the harness(es), connector(s) and terminal(s).

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 Basic Inspection

CAUTION / NOTICE / HINT When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem. In many cases, by

 Registration

REGISTRATION CAUTION / NOTICE / HINT PROCEDURE 1. VIN (VEHICLE IDENTIFICATION NUMBER) NOTICE: The Vehicle Identification Number (VIN) must be written to a replacement ECM. HINT: The VIN is a 17-digit

 Initialization

INITIALIZATION Inspection After Repair Perform Learning Value Reset and Idle Learning after replacing or servicing parts related to engine operation. Details on procedures required are indicated by an

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 Switch Lights of Remote Touch do not Illuminate

DESCRIPTION Power is supplied to the remote touch (remote operation controller assembly) illumination when the light control switch is in the tail or head position. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuse for circuits related to this system before performing the following pr

 System Voltage (BATT) Circuit Short to Ground or Open (P056014)

DESCRIPTION Auxiliary battery power is supplied to the AM terminal of the battery ECU assembly in order to store DTCs and freeze frame data. Even if the power switch is turned off, back-up power is supplied. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicat

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