Throttle Position (TP) Sensor G69 / Throttle Position (TP) Sensor G88 , checking

Special tools, testers and auxiliary items required 

• Multimeter.
• Wiring diagram

Test requirement 

• The Motronic Engine Control Module (ECM) J220 fuses OK.
• Battery voltage at least 12.5 volts.
• All electrical consumers such as, lights and rear window defroster, switched off.
• Vehicles with automatic transmission, shift selector lever into position "P" or "N".

• A/C switched off.
• Ground (GND) connections between engine/transmission/chassis 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 

• Remove the drivers side storage compartment. Refer to 68 - INTERIOR EQUIPMENT .

Fig 1: Identifying Throttle Position Sensor G9 / Throttle Position Sensor G88 6-Pin Electrical Harness Connector

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Disconnect the Throttle Position (TP) Sensor G9 / Throttle Position (TP) Sensor G88 6-pin electrical harness connector - 2  -.

Checking voltage supply and wiring 

• Switch the ignition on.

Fig 2: 6-Pin Electrical Harness Connector & Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Using a Multimeter , check the following wiring connections for voltage.

• Switch the ignition off.

If the specification was not obtained:

If the manufacturers test box is being used. Perform the following step.

• Install the Adapter Cable (68-pin) vag1598/22. Refer to 24 MULTIPORT FUEL INJECTION (MFI) .

If the manufacturers test box is not being used. Perform the following step.

• Remove the Motronic Engine Control Module (ECM) J220. Refer to → Motronic Engine Control Module (ECM) J220 , replacing  .

Fig 3: 6-Pin Electrical Harness Connector & Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Using a Multimeter , check the Throttle Position (TP) Sensor G69 / Throttle Position (TP) Sensor G88 electrical harness connector terminals to the Motronic Engine Control Module (ECM) J220 electrical connector T80 for an open circuit.

Specified value: 1.5 Ω max.

If the specification is not obtained:

• Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
• Check the electrical harness connector for damage, corrosion, loose or broken terminals.
• If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring and if the voltage supply was OK:

• Replace the Throttle Position (TP) Sensor G69 / Throttle Position (TP) Sensor G88. For all Motronic fuel injection system removal/installation procedures and torque specifications. Refer to 24 - Multiport Fuel Injection (MFI)  .

If no malfunction is detected in the wiring and if the voltage supply was not OK:

• 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.
• Install the drivers side storage compartment. Refer to 68 - INTERIOR EQUIPMENT .

Final procedures 

After the repair work, the following work steps must be performed in the following sequence:

1. Check the DTC memory. Refer to.
2. If necessary, erase the DTC memory. Refer to.
3. If the DTC memory was erased, generate readiness code. Refer to.

End of diagnosis