Exhaust Door Control Unit - J883-, CHECKING
Observe all safety precautions: SAFETY PRECAUTIONS
View clean working conditions: CLEAN WORKING CONDITIONS
Special tools and workshop equipment required
- Multimeter
- Wiring diagram.
Test procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
Start diagnosis
-- Remove the engine cover. Refer to the Repair Information.
-- Disconnect theExhaust Door Control Unit -J883- -1- electrical harness connector.
-- Switch the ignition on.
-- Using a multimeter, Check the Exhaust Door Control Unit -J883- electrical harness connector terminals 1 to 3 for voltage.
Specified value: about 5.0 V
-- Switch the ignition Off.
Continue test according to the following table:
| Value | Cause | Test |
|---|---|---|
| If the specified value was not obtained: | Open or shorted circuit | Exhaust Door Control Unit - J883-, CHECKING => Checking wiring |
| If the specified value was obtained: | Check reference signal circuit | Exhaust Door Control Unit - J883-, CHECKING => Checking Activation |
Checking wiring
-- Remove the Engine Control Module (ECM) -J623-. Refer to appropriate service information.
-- Using a Multimeter, Check the Exhaust Door Control Unit -J883- electrical harness connector to the Engine Control Module (ECM) -J623- electrical harness connector T94 for an open circuit.
| Exhaust Door Control Unit -J883- electrical harness connector terminals | Engine Control Module (ECM) -J623- electrical harness connector T94 terminals. |
|---|---|
| 1 | 14 |
| 3 | 79 |
Specified value: 1.5 Ω Max.
If the specified value was Not obtained:
-- Check the wiring connection for an open circuit, short circuit to Battery positive or Ground
-- Check the wiring connection for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
-- Go to Final procedures
If the specified value was obtained:
-- If no faults were found Replace the Engine Control Module (ECM) -J623-. Refer to appropriate service information.
-- Go to Final procedures
Checking Activation
-- Remove the Engine Control Module (ECM) -J623-. Refer to appropriate service information.
-- Using a Multimeter, Check the Exhaust Door Control Unit -J883- electrical harness connector to the Engine Control Module (ECM) -J623- electrical harness connector T94 for an open circuit.
| Exhaust Door Control Unit -J883- electrical harness connector terminal | Engine Control Module (ECM) -J623- electrical harness connector T94 terminals |
|---|---|
| 2 | 76 |
| 4 | 7 |
| 5 | 29 |
Specified value: 1.5 Ω Max.
If the specified value was Not obtained:
-- Check the wiring connection for an open circuit, short circuit to Battery positive or Ground
-- Check the wiring connection for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
-- Go to Final procedures
If the specified value was obtained:
-- Replace the Exhaust Door Control Unit -J883-. Refer to the Repair 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 .