Toyota RAV4 manuals

Toyota Sienna Service Manual: MIL Circuit

DESCRIPTION

The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunctions detected by the ECM.

When the ignition switch is turned to the ON position, power is supplied to the MIL circuit, and the ECM provides the circuit ground which illuminates the MIL.

The MIL operation can be checked visually. When the ignition switch is first turned to the ON position, the MIL should be illuminated and should then turn off. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the intelligent tester.

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 CHECK THAT MIL IS ILLUMINATED

(a) Turn the ignition switch to the ON position.

(b) Check the illumination of the MIL.

Result

2 CHECK WHETHER MIL TURNS OFF

(a) Connect the intelligent tester to the DLC3.

(b) Turn the ignition switch to the ON position and turn the tester on.

(c) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.

(d) Check if any DTCs have been stored. Note down any DTCs.

(e) Clear the DTCs (See page ES-39).

(f) Check if the MIL goes off.

Standard: MIL goes off.

3 CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS)

CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS)

(a) Disconnect the E5 ECM connector.

(b) Turn the ignition switch to the ON position.

(c) Check that the MIL is not illuminated.

OK: MIL is not illuminated.

(d) Reconnect the ECM connector.

4 CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)

CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)

(a) Disconnect the E5 ECM connector.

(b) Disconnect the C10 combination meter connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance (Check for Open)

Standard resistance (Check for Short)

(d) Reconnect the ECM connector.

(e) Reconnect the combination meter connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER - ECM)

5 CHECK THAT ENGINE STARTS

(a) Turn the ignition switch to the ON position.

(b) Start the engine.

Result

HINT: *: The intelligent tester cannot communicate with the ECM.

6 CHECK HARNESS AND CONNECTOR (COMBINATION METER - BODY GROUND)

CHECK HARNESS AND CONNECTOR (COMBINATION METER - BODY GROUND)

(a) Disconnect the E5 ECM connector.

(b) Turn the ignition switch to the ON position.

(c) Measure the voltage according to the value(s) in the table below.

Standard voltage

(d) Reconnect the ECM connector.

7 CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)

CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)

(a) Disconnect the E5 ECM connector.

(b) Disconnect the C10 combination meter connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance (Check for short)

Standard resistance (Check for Short)

(d) Reconnect the ECM connector.

(e) Reconnect the combination meter connector

REPLACE COMBINATION METER ASSEMBLY

Air Intake Control Circuit
DESCRIPTION The air cleaner is equipped with two inlets, one of which is opened or closed by the Air Intake Control Valve (AICV). This system reduces intake noise and increases engine power at l ...

Сamshaft timing oil control valve assembly
COMPONENTS ON-VEHICLE INSPECTION 1. INSPECT CAMSHAFT TIMING CONTROL VALVE ASSEMBLY (a) Connect the intelligent tester to the DLC3. (b) Turn the ignition switch to the ON position ...

Other materials:

Bluetooth tel check mode
HINT: Illustration may differ from the actual vehicle depending on the device settings and options. Therefore, some detailed area may not be shown exactly the same as on the actual vehicle. 1. ENTER DIAGNOSTIC MODE 2. BLUETOOTH TEL CHECK  Select "Bluetooth TEL Check" fro ...

Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem
DTC P0121 Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem HINT: This DTC relates to the Throttle Position (TP) sensor. DESCRIPTION Refer to DTC P0120 DTC No. DTC Detection Condition Trouble Area P0121 Differen ...

Input Signal Circuit Malfunction
DTC P0607 Input Signal Circuit Malfunction DESCRIPTION This DTC indicates internal abnormalities of the ECM. DTC No. Detection Item Trouble Area P0607 The ECM has a supervisory CPU and control ECU inside. When each input STP signal is different for 0.15 ...

© 2011-2020 Copyright www.tsienna.net