Intake Manifold Runner Control Valve, Checking
Special tools and workshop equipment required
- Multimeter.
- Wiring diagram.
Test requirements
- The Intake Manifold Runner Control (IMRC) Valve -N316- fuse 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 the appropriate fuse. Refer to applicable wiring diagram for fuse positions.
-- 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
-- Remove the Engine Control Module (ECM) -J623-. Refer to the Repair 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 T105 terminal for resistance. Refer to the Wiring Diagrams.
| Intake Manifold Runner Control (IMRC) Valve -N316- electrical harness connector terminal: | Engine Control Module (ECM) -J623- electrical harness T105 connector: |
|---|---|
| 2 | 53 |
Specified value: 1.5 Ω Max.
If the specified value 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 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:
- Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
- If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
- If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .