Turbocharger Control Module Checking
Observe all safety precautions: SAFETY PRECAUTIONS
View clean working conditions: CLEAN WORKING CONDITIONS
Prior to repair work, perform a preliminary check to verify the condition. Refer to PRELIMINARY CHECK .
Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.
For wiring diagrams, component locations, and connector views, Refer to the applicable wiring diagram.
Special tools and workshop equipment required
- multimeter.
- Wiring diagram.
Test requirements
- The ignition switched off.
Start diagnosis
-- Disconnect the Turbocharger Control Module -J724- electrical harness connector.
Checking voltage
-- Switch the ignition On.
-- Using a multimeter, measure voltage supply between connector terminals 1 to 3 for voltage.
Specified value: near Battery voltage.
If the specified value was not obtained:
-- Check the wiring for a short circuit to each other, Battery positive, Ground or high resistance.
-- Check the wiring connections for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
If the specified value was obtained:
-- Using a multimeter, measure voltage supply between connector terminals 4 to 5 for voltage.
Specified value: near 5.01 V.
If the specified value was not obtained:
-- Check the wiring for a short circuit to each other, Battery positive, Ground or high resistance.
-- Check the wiring connections for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
If the specified value was obtained:
-- Using a multimeter, measure voltage supply between connector terminals 2 to 3 for voltage.
Specified value: near Battery voltage.
If the specified value was not obtained:
-- Check the wiring for a short circuit to each other, Battery positive, Ground or high resistance.
-- Check the wiring connections 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 readings were correct:
-- Replace the Turbocharger Control Module -J724-. Refer to the service information for removal and installation procedures.
If no malfunction is detected in the wiring and the voltage readings were Not correct:
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 Repair information.
-- Using a multimeter, check the Turbocharger Control Module -J724- electrical harness connector to the Engine Control Module (ECM) -J623- electrical harness T94 connector for resistance.
| Turbocharger Control Module -J724- electrical harness connector terminal | Engine Control Module (ECM) -J623- electrical harness connector T94 terminals or test box socket |
|---|---|
| 1 | 7 |
| 2 | 29 |
| 3 | 79 |
| 4 | 76 |
| 5 | 17 |
Specified value: 1.5 Ω Max.
If the specification was not obtained:
-- Check the wiring for a short circuit to each other, Battery positive, Ground or high resistance.
-- If necessary, repair the faulty wiring connection.
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
If no malfunction is detected in the wiring and the voltage readings were Not correct:
-- Replace the Engine Control Module (ECM) -J623-. Refer to the service information for removal and installation procedures.
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 .