Intake Manifold Runner Control Valve, Checking

Special Tools And Workshop Equipment Required 

• Multimeter.
• Wiring diagram.

Test Requirements 

• Fuse -SB24- OK.
• The ECM Power Supply Relay -J271- 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: 25 (+/- 10) Ω. 

If the specified value was Not obtained:

-- Replace the Intake Manifold Runner Control (IMRC) Valve -N316-.

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 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 24 on Fuse Panel B.

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

-- If necessary, repair the wiring connection.

If the specified value was obtained: 

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 to the Engine Control Module (ECM) -J623- electrical harness connector terminal for resistance.

Intake Manifold Runner Control (IMRC) Valve -N316- electrical harness connector terminal	Engine Control Module (ECM) -J623- electrical harness T60 connector or test box socket terminal
2	20

Specified value: 1.5 Ω Max. 

If the specified value was Not obtained: 

-- Check the wiring for an open circuit, short or high resistance.

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

-- If necessary, repair the faulty wiring connection.

If the specified value was obtained: 

-- 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 .