Battery Sensor Input Test

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: Before testing, make sure the battery ground cable is installed correctly, and make sure there is continuity between the battery negative terminal and ground terminal G1.

Disconnect the 2P connector (A) from the battery sensor (B).
'10-11 models

Fig 1: Locating 2P Connector And Battery Sensor ('10-11 Models)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

'12 model

Fig 2: Locating 2P Connector And Battery Sensor ('12 Model)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose, or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 3.
With the 2P connector still disconnected, do the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, replace the battery sensor.

Cavity	Wire	Test Condition	Test: Desired result	Possible cause if desired result is not obtained
2	GRN	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. 9 (7.5 A) fuse in the main under-hood fuse box Faulty main under-hood fuse box An open or high resistance in the wire
1	PNK	Under all conditions	Check for continuity between terminal No. 1 and gauge control module connector B (24P) terminal No. 7: There should be continuity.	An open or high resistance in the wire