Intake Manifold Runner Control Valve, Checking

Special Tools And Workshop Equipment Required 

• Multimeter
• Wiring diagram

Test Requirements 

• Fuse -SB 7- 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 PRELIMINARY CHECK .

Start Diagnosis 

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

Checking internal resistance

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

Specified Value: 25Ω +/- 10 Ω  .

If the specified value was not obtained:

-- Replace the Intake Manifold Runner Control (IMRC) Valve -N316-. Refer to the appropriate service information.

If the specified value was obtained:

Checking voltage

Switch the ignition on.

-- 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 fuse SB 7on fuse panel B.

-- Check the electrical harness connector for damage, corrosion, loose 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.

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

-- Remove the Engine Control Module (ECM) -J623-. Refer to the appropriate service information.

-- 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 terminal 36 for resistance.

Specified Value: 1.5 Ω Max. 

If the specification was not obtained:

-- Check the wiring for a open circuit.

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

-- If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring:

-- Erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .

-- Perform a road test to verify repair.

If the DTC does not return:

Generate readiness code. Refer to READINESS CODE .

If the DTC does return and no malfunction is detected in the wiring and the voltage supply was OK:

-- Replace the Engine Control Module (ECM) -J623-. Refer to the appropriate service information.

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 .
2. If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
3. If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .