TPMS indicator does not go off, and no DTCs are stored

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If the TPMS control unit was replaced, the TPMS indicator will be on until all four sensor ID codes are learned.

Turn the ignition switch to LOCK (0).
Check the No. 1 (7.5 A) fuse in the under-dash fuse/relay box.
Is the fuse blown?

YES -Replace the fuse. Turn the ignition switch to ON (II), then turn it to LOCK (0) again. If the fuse blows again, repair the short to ground on the No. 1 (7.5 A) fuse circuit.

NO -Reinstall the fuse, then go to step 3.
Check the No. 21 (7.5 A) fuse in the under-dash fuse/relay box.
Is the fuse blown?

YES -Replace the fuse. Turn the ignition switch to ON (II), then turn it to LOCK (0) again. If the fuse blows again, repair the short to ground on the No. 21 (7.5 A) fuse circuit.

NO -Reinstall the fuse, then go to step 4.
Do the gauge control module self-diagnostic function.
Is the gauge control module OK?

YES -Go to step 6.

NO -Replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).
Disconnect the TPMS control unit 20P connector (see TPMS CONTROL UNIT REPLACEMENT ).
Measure the voltage between body ground and TPMS control unit 20P connector terminal No. 10.

Fig 1: Measuring Voltage Between Body Ground And TPMS Control Unit 20P Connector Terminal No. 10
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 7.

NO -Repair an open in the wire between the TPMS control unit and the No. 1 (7.5 A) fuse in the under-dash fuse/relay box.
Turn the ignition switch to ON (II).
Measure the voltage between body ground and TPMS control unit 20P connector terminal No. 8.

Fig 2: Measuring Voltage Between Body Ground And TPMS Control Unit 20P Connector Terminal No. 8
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 9.

NO -Repair an open in the wire between the TPMS control unit and the No. 21 (7.5 A) fuse in the under-dash fuse/relay box.
Turn the ignition switch to LOCK (0).
Reconnect TPMS control unit 20P connector.
Turn the ignition switch to ON (II).
Measure the voltage between body ground and TPMS control unit 20P connector terminal No. 4.

Fig 3: Measuring Voltage Between Body Ground And Tpms Control Unit 20P Connector Terminal No. 4
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there 0.1 V or more?

YES -Repair an open or high resistance in the wire between the TPMS control unit and body ground (G401).

NO -Go to step 13.
Turn the ignition switch to LOCK (0).
Disconnect TPMS control unit 20P connector (see TPMS CONTROL UNIT REPLACEMENT ).
Disconnect gauge control module connector A (12P) (see GAUGE CONTROL MODULE REPLACEMENT ).

Check for continuity between TPMS control unit 20P connector terminal and gauge control module connector A (32P) terminal (see table).

Terminal name	TPMS Control Unit 20P Connector Terminal	Gauge Control Module Connector A (32P) Terminal
F-CAN A L	No. 11	NO. A6
F-CAN A H	No. 1	NO. A12

Fig 4: Checking Continuity Between TPMS Control Unit 20P Connector Terminal And Gauge Control Module Connector A (32P) Terminal

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit, and recheck.

NO -Repair an open in the wire between the TPMS control unit and the gauge control module.