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Intake Manifold Runner Control Valve, Checking






Intake Manifold Runner Control Valve, Checking

Special tools, testers and auxiliary items required

Multimeter.

Wiring diagram.

Test requirements

Fuse (S282) OK.

The Engine Component Power Supply Relay (J757) OK.

The parking brake engaged.

The battery voltage at least 12.5 V.

The selector lever of automatic transmission in position "P" or " N".

All electrical consumers switched off (radiator fan must NOT run during test).

A/C switched off.

The fuel tank at least 1/4 filled.

The ignition switched off.

Test procedure

- Perform a preliminary check to verify the customers complaint. Refer to => [ General Diagnosis ] General Diagnosis.

Start diagnosis

- Remove the rear engine cover - arrows -.





- Disconnect the Intake Manifold Runner Control (IMRC) Valve (N316) electrical harness connector - 2 -.





Checking internal resistance

- Using a Multimeter, check the Intake Manifold Runner Control (IMRC) Valve (N316) terminals 1 to 2 for resistance





Specified value: 450 to 1000 ohms.

If the specified value was not obtained:

- Replace the Intake Manifold Runner Control (IMRC) Valve (N316). Refer to Fuel Injection and Ignition Repair Information.

If the specified value was obtained:

Checking voltage

Crank the engine.

- Using a Multimeter, check the Intake Manifold Runner Control (IMRC) Valve (N316) electrical harness connector terminal 1 to ground (GND) for voltage.





Specified value: battery voltage.

- Switch the ignition off.

If the specified value was not obtained:

- Check the wiring from the Intake Manifold Runner Control (IMRC) Valve (N316) electrical harness connector terminal 1 to the Engine Component Power Supply Relay (J757) terminal 2/87 for a short circuit to Ground (GND), or an open circuit.

- Check the electrical harness connector for damage, corrosion, lose or broken terminals.

- If necessary, repair the wiring connection.

If no malfunctions are found in the wiring:

Checking wiring

If the manufacturers test box is being used. Perform the following step.

- Install the test box. Refer to Fuel Injection and Ignition Repair Information.

If the manufacturers test box is not being used. Perform the following step.

- Remove the Motronic Engine Control Module (ECM) ( J623). Refer to => [ Engine Control Module 1, Removing and Installing ] Engine Control Module 1, Removing and Installing.

- Using a multimeter, check the Intake Manifold Runner Control (IMRC) Valve (N316) electrical harness connector terminal 2 to the Engine Control Module (ECM) (J623) electrical harness connector T60 terminal 35 for an open circuit.





Specified value: 1.5 ohms Max.

If the specification was not obtained:

- Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).

- Check the electrical harness connector for damage, corrosion, lose or broken terminals.

- If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring:

- Replace the Motronic Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module 1, Removing and Installing ] Engine Control Module 1, Removing and Installing.

- Install the rear engine cover - arrows -.





Final procedures

After the repair work, the following work steps must be performed in the following sequence:

1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Mode 03 - Read DTC Memory.

2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Mode 04 - Erase DTC Memory.

3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes.

- End of diagnosis.