Solenoid Valves in Valve Body , checking
This procedure is used to diagnose all Solenoid Valves in the valve body.
Special tools, testers and auxiliary items required
- Multimeter
- Wiring diagram
Requirements
- The Solenoid Valve fuses OK.
- The battery voltage must be at least 12.5 Volts.
- All electrical consumers must be switched off.
- The parking brake must be engaged.
- The selector lever must be in the "P" position.
- The Ground (GND) connections to transmission must be OK.
- Ignition switched off.
Test procedure
- Perform a preliminary check to verify the customers complaint. Refer to → Motronic Engine Control Module (ECM) J220 , replacing
Start diagnosis
- Disconnect the Solenoid Valve electrical harness connector - 2 -.
- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
- Repair any damage found to the electrical harness connector.
If the electrical harness connector is not OK:
- Repair the malfunction.
If the electrical harness connector is OK:
Checking resistance
- Using a multimeter , check the Solenoid Valve terminals 1 to 2 at the Solenoid Valve electrical harness connector for resistance.
| Solenoid Valve | Electrical Harness Connector Terminal | Specified Value (Approx. 20 ° C) |
| Solenoid Valve 1 N88 | 1 to Ground (GND) | 10.0 - 16.0 Ω |
| Solenoid Valve 2 N89 | 2 to Ground (GND) | 10.0 - 16.0 Ω |
| Solenoid Valve 3 N90 | 7 to 8 | 4.0 - 8.0 Ω |
| Solenoid Valve 4 N91 | 11 to 12 | 4.0 - 8.0 Ω |
| Solenoid Valve 5 N92 | 3 to 4 | 4.0 - 8.0 Ω |
| Solenoid Valve 6 N93 | 13 to 14 | 4.0 - 8.0 Ω |
| Solenoid Valve 7 N94 | 5 to 6 | 4.0 - 8.0 Ω |
If any of the specified values are not obtained:
- Replace the faulty Solenoid Valve. For all Automatic Transmission system removal/installation procedures and torque specifications. Refer to 38 AUTOMATIC TRANSMISSION - GEARS, HYDRAULIC CONTROLS .
If the specified values are obtained:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
- Install the test box. Install the Adapter - 68 Pin VAG1598/18. Refer to 38 AUTOMATIC TRANSMISSION - GEARS, HYDRAULIC CONTROLS .
If the manufacturers test box is not being used. Perform the following step.
- Remove the Transmission Control Module (TCM) J217. Refer to.
- Using a multimeter , check the Solenoid Valve electrical harness connector terminals to the Transmission Control Module (TCM) J217 electrical harness connector T68 terminals for an open circuit.
| Solenoid Valve | Electrical Harness Connector Terminal | Transmission Control Module (TCM) J217 electrical harness connector T68 terminals or test box sockets |
| Solenoid Valve 1 N88 | 1 | 67 |
| 3 | 55 | |
| Solenoid Valve 2 N89 | 4 | 54 |
| Solenoid Valve 3 N90 | 5 | 9 |
| Solenoid Valve 4 N91 | 6 | 47 |
| Solenoid Valve 5 N92 | 7 | 55 |
| Solenoid Valve 6 N93 | 2 | 22 |
| 8 | 58 | |
| Solenoid Valve 7 N94 | 10 | 10 |
Specified value: 1.5 Ω Max.
If the specified value was not obtained:
- Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
- If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring and the resistance was not OK:
- Replace the faulty Solenoid Valve. For all Automatic Transmission system removal/installation procedures and torque specifications. Refer to 38 AUTOMATIC TRANSMISSION - GEARS, HYDRAULIC CONTROLS .
If no malfunction is found in the wiring and the resistance was OK:
- Replace the Transmission Control Module (TCM) J217. For all Automatic Transmission system removal/installation procedures and torque specifications. Refer to 38 AUTOMATIC TRANSMISSION - GEARS, HYDRAULIC CONTROLS .
- Erase the DTC memory. Refer to → Diagnostic Mode 04: Reset/delete diagnostic data
- Perform a road test to verify repair.
If the DTC does not return:
Repair complete, Generate readiness code. Refer to → Readiness Code .
- End diagnosis.
If the DTC does return and no malfunction is detected in the wiring and the voltage supply was OK:
- Replace the Motronic Engine Control Module (ECM) J220. Refer to → Motronic Engine Control Module (ECM) J220 , replacing .
- Assembly is performed in the reverse of the removal.
Final procedures
- Check the DTC memory. Refer to → Mode 03: Interrogating fault memory . If necessary, erase DTC memory of the Transmission Control Module (TCM) J217. → Diagnostic Mode 04: Reset/delete diagnostic data
- Generate readiness code. → Readiness Code
End of procedure