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 7 on 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 28 for resistance.
| Intake Manifold Runner Control (IMRC) Valve -N316- electrical harness connector terminal | Engine Control Module (ECM) -J623- electrical harness connector terminal or test box socket |
|---|---|
| 2 | 28 |
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:
- 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.