Multi-Function Transmission Range Switch, Checking

Special tools and workshop equipment required 

• Multimeter
• Wiring diagram

Requirements 

• The Multi-Function Transmission Range (TR) Switch -F125- fuse OK.
• The Control Module with indicator unit in the Instrument Cluster Control Module -J285- must be OK.
• The selector lever cable adjustment 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.

Test procedure 

-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK .

Start diagnosis 

Procedure 

-- 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 Multi-Function Transmission Range (TR) Switch -F125- electrical harness connector -1-.

-- 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 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 Transmission Control Module (TCM) -J217-. Refer to TRANSMISSION CONTROL MODULE, REPLACING .

-- Using a multimeter --, check the Multi-Function Transmission Range (TR) Switch -F125- electrical harness connector terminals to the Transmission Control Module (TCM) -J217- electrical harness connector T52 terminals for an open circuit.

Multi-Function Transmission Range (TR) Switch -F125- electrical harness connector terminal	Transmission Control Module (TCM) -J217- electrical connector T52 terminals or test box sockets
1	47
3	1
4	2
5	22
7	10
9	36
10	21

Specified value: 1.5 Ω Max.

If the specification 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 was found in the wiring and the resistance was not OK:

-- Check the Multi-Function Transmission Range (TR) Switch -F125-. For all Automatic Transmission component locations. Refer to Automatic Transmissions, Repair Group 38.

If no malfunction is found in the wiring and the resistance was OK:

-- Replace the Transmission Control Module (TCM) -J217-. Refer to TRANSMISSION CONTROL MODULE, REPLACING .

-- Assembly is performed in the reverse of the removal.

Final procedures 

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