Automatic Transmission Pressure Regulating Valves, Checking
Automatic Transmission Pressure Regulating Valves, Checking
• The Automatic Transmission Pressure Regulating Valve 1 (N215), Automatic Transmission Pressure Regulating Valve 2 (N216), Automatic Transmission Pressure Regulating Valve 3 (N217), Automatic Transmission Pressure Regulating Valve 4 (N218), Automatic Transmission Pressure Regulating Valve 5 (N233), and the Automatic Transmission Pressure Regulating Valve 6 (N371) are components of the Mechatronic unit in the transmission and cannot be serviced individually.
Requirements
• The battery voltage must be at least 12.5 Volts.
• All electrical consumers must be switched off.
• The parking brake must be engaged.
• The elector lever must be in the "P" position.
• The Ground (GND) connections to transmission must be OK.
Test Procedure
- Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] Preliminary Check
- Disconnect the Transmission Control Module (TCM) (J217) electrical harness connector - direction of the arrow -.
- Observe safety precautions.
- Check the electrical harness connector for contact corrosion and ingress of water.
If the electrical harness connector is not OK:
- Repair the malfunction.
If the electrical harness connector is OK:
- Check the wiring according to the wiring diagram:
If no malfunctions are found in the wiring:
- Replace the Mechatronic unit in the transmission. Refer to appropriate repair information.
Final procedures
1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Modes 01 - 0A.
2. If necessary, erase the Transmission Control Module (TCM) (J217) memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 0A.
3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes.
Transmission Control Module Voltage Supply, Checking
• The Transmission Control Module (TCM) (J217) is a component of the Mechatronic unit in the transmission and cannot be serviced individually.
Special tools, testers and auxiliary items required
• Multimeter.
• Wiring diagram.
Requirements
• The Transmission Control Module (TCM) (J217) fuses OK.
• The battery voltage must be at least 12.5 volts.
• The Ground (GND) connections at the transmission OK.
• The parking brake engaged.
• The selector lever of automatic transmission in position "P".
• All electrical consumers switched off.
• The ignition switched off.
Test Procedure
- Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] Preliminary Check
- Disconnect the Transmission Control Module (TCM) (J217) electrical harness connector - direction of the arrow -.
- Check the electrical harness connector for damage, contact corrosion, or ingress of water.
If the electrical harness connector is not OK:
- Repair the malfunction.
If the electrical harness connector is OK:
Checking voltage
- Switch the ignition on.
- Using a Multimeter, check the Power Supply Relay (terminal 15) (J329) socket 2/87 to Ground (GND).
Specified value: battery voltage.
- Switch the ignition off.
If the specified value was not obtained:
- Check the wiring from the Power Supply Relay (terminal 15) (J329) socket 2/87 to the Transmission Control Module (TCM) (J217) electrical harness connector terminal 9 for an open circuit or a short circuit.
- If necessary, repair the faulty wiring connection.
If the specified value was obtained:
- Using a Multimeter, check the Transmission Control Module (TCM) (J217) electrical harness connector terminal 14 to Ground (GND).
Specified value: battery voltage.
If the specified value was obtained:
- Check the wiring from the Battery to the Transmission Control Module (TCM) (J217) electrical harness connector terminal 14 for an open circuit or a short circuit.
- If necessary, repair the faulty wiring connection.
If the specified value was obtained:
Checking Ground (GND)
- Using a Multimeter, check the Transmission Control Module (TCM) (J217) electrical harness connector terminals 13 and 16 to Ground (GND) for resistance.
Specified value: 1.5 ohms
If the specification was not obtained:
- Check the wiring for a an open circuit.
- If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring:
- Replace the Mechatronic unit in the transmission. Refer to appropriate repair information.
Final procedures
1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Modes 01 - 0A.
2. If necessary, erase the Transmission Control Module (TCM) (J217) memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 0A.
3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes.
USA5R0449-092009