Gauge Control Module Input Test

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2014 Honda Ridgeline, 2013 Honda Ridgeline, 2012 Honda Ridgeline, 2011 Honda Ridgeline, and 2010 Honda Ridgeline. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Check the No. 22 (120 A), No. 23 (60 A), No. 15(40 A) fuse in the under-hood fuse/relay box before testing.

Before troubleshooting the gauge control module, troubleshoot the multiplex integrated control system first, using B-CAN System Diagnosis Test mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
Turn the ignition switch to LOCK (0).
Remove the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).
Disconnect connectors from the gauge control module.
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 6.
NOTE: All connectors are wire side of female terminals.

Fig 1: Identifying Gauge Control Module Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Reconnect connectors A and C to the gauge control module, and do these input tests at the following connector.

If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).

WIRE TEST CONDITION REFERENCE CHART

Cavity	Wire	Test Condition	Test: Desired result	Possible cause if desired result is not obtained
C10	BLK	In all ignition switch positions	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G402) An open or high resistance in the ground wire
A19	WHT/RED	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. 7 (7.5 A) fuse in the under-dash fuse/relay box An open or high resistance in the wire
A20	YEL	Ignition switch ON (II)	Measure the voltage to ground: There should be battery voltage.	Blown No. 21 (7.5 A) fuse in the under-dash fuse/relay box An open or high resistance in the wire
B6	BRN/YEL	Under all conditions	Check for continuity between terminal B6 and under-dash fuse/relay box connector N (45P) terminal No. 28: There should be continuity.	An open or high resistance in the wire