C1932

DTC C1912: TPMS Transmitter 1 Abnormality (Tire Air Pressure Low)
DTC C1922: TPMS Transmitter 2 Abnormality
(Tire Air Pressure Low)
DTC C1932: TPMS Transmitter 3 Abnormality (Tire Air Pressure Low)
DTC C1942: TPMS Transmitter 4 Abnormality (Tire Air Pressure Low)

TPMS DTC SET CONDITION

DTC C1912, C1922, C1932 or C1942 is set when the TPMS receiver recognized a low tire pressure from one or more of the TPMS transmitters. At the same time this DTC is set, the TPMS warning light illuminates.

TIRE PRESSURE THRESHOLD VALUES





TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS DTC TO SET ARE:)

- Low tire inflation pressure
- Punctured tire
- Damaged tire valve grommet and/or valve core
- Defective TPMS transmitter
- Malfunction of the TPMS receiver

DIAGNOSIS

NOTE:
Prior to performing troubleshooting for DTC C1912, C1922, C1932 or C1942, first carry out "TPMS Inspection Procedure No.1: The TPMS Warning Light Stays On" (Refer to Inspection Procedure 1).
If the troubleshooting is not complete and DTC C1912, C1922, C1932 or C1942 is set, carry out troubleshooting as described below.

Required Special Tools:

- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicle Communication Interface (V.C.I.)
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A

STEP 1. Use a tire pressure gauge to measure the tire inflation pressure of the TPMS transmitter-fitted tires. Then execute "Tire Pressure Sensor Check" on scan tool MB991958

(1)Use an accurate tire pressure gauge to measure the tire inflation pressure of the TPMS transmitter-fitted tires, and note the inflation pressures.





(2)
CAUTION:
To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Connect scan tool MB991958 to the data link connector.
(3)Turn the ignition switch to the "ON" position.
(4)Execute "Tire Pressure Sensor Check" for all the TPMS transmitter-fitted tires
(Refer to Testing and Inspection).

Q. Is the tire inflation pressure shown on scan tool MB991958 within± 20 kPa (3 psi) from the actual inflation pressure?[ Ambient temperature during measurement must be 0 - 50°C (32 - 122°F)]

YES Adjust the tire inflation pressures to the value specified on the tire pressure label. Then execute "Tire Pressure Sensor Check" on scan tool MB991958 (Refer to Testing and Inspection) to update the tire inflation pressure data on scan tool MB991958. Make sure that the pressures displayed on scan tool MB991958 correspond to the value specified on the tire pressure label.
Then go to Step 2.

NO Execute "TPMS transmitter check" again, and if the tire inflation pressure shown on scan tool is not within ±20 kPa (3 psi) from actual inflation pressure. Replace the TPMS transmitter, where the tire pressure sensor is inaccurate. Then execute "Tire Pressure Sensor ID Registration" (Refer to Tire Pressure Sensor ID Registration). Then go to Step 3.

STEP 2. Recheck for the diagnostic trouble code.

Q. Does diagnostic trouble code C1912, C1922, C1932 or C1942 reset?

YES Replace the TPMS receiver (Refer to TPMS Receiver Removal and Installation). On completion, execute "Tire Pressure Sensor ID Registration" on scan tool MB991958 "Special Function" (Refer to Tire Pressure Sensor ID Registration). Then go to Step 3.
NO The procedure is complete.
STEP 3.Recheck for diagnostic trouble code.

Q. Does diagnostic trouble code C1912, C1922, C1932 or C1942 reset?

YES Repeat the troubleshooting from Step 1.
NO The procedure is complete.