Multi-Function Transmission Range Switch, Checking

Requirements 

• Control Module with indicator unit in the Instrument Cluster Control Module -J285- must be 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 elector lever must be in the "P" position.
• The Ground (GND) connections to transmission must be OK.

Test sequence 

-- Switch the ignition on.

-- Depress the brake pedal and maintain depressed.

-- Shift the selector lever into all positions.

The selector lever position must correspond to the display of the Control Module with the indicator unit in the Instrument Cluster Control Module -J285-.

-- Switch the ignition off.

If the selector lever position does not correspond to the display of the Control Module with indicator unit in the Instrument Cluster Control Module -J285- :

-- 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 and repeat the test sequence.

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: ATF PAN, ATF FILTER AND MECHATRONIC OVERVIEW .

Final procedures 

1. Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
2. If necessary, erase the Transmission Control Module (TCM) -J217- memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
3. If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .