Auxiliary input sound is low or cannot be heard (with navigation)

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

NOTE:

Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ).
Use auxiliary stereo cables with 3.5 mm ends only.
Auxiliary accessories may be played on the audio unit using the auxiliary input.

Turn the ignition switch to ON (II).
Turn on the audio-navigation unit and connect an auxiliary accessory to the auxiliary input jack.
Check the volume operation.
Is the sound normal?

YES -Operation is normal at the time.

NO -go to step 4.
Make sure the auxiliary accessory volume is set to high.
Is the volume set to high?

YES -go to step 5.

NO -Raise the auxiliary accessory volume to high. Make sure the audio-navigation unit volume is turned down before retesting.
Substitute a known-good auxiliary audio accessory and/or auxiliary stereo cable, and recheck.
Does the auxiliary audio accessory operate properly?

YES -Original auxiliary audio accessory or auxiliary stereo cable is faulty.

NO -go to step 6.
Turn the ignition switch to LOCK (0).
Remove the auxiliary jack assembly (see USB ADAPTER UNIT REPLACEMENT ), and check that the auxiliary jack assembly is properly connected.
Is the auxiliary jack assembly connected properly?

YES -go to step 8.

NO -Reconnect the connector, and recheck the function.
Disconnect the auxiliary jack assembly 5P connector.
Remove the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ), and disconnect audio-navigation unit connector B (24P).

Check for continuity between body ground and audio-navigation unit connector B (24P) according to the table.

AUDIO-NAVIGATION UNIT CONNECTOR CHART

Audio-navigation unit connector	Wire color
B1	BRN
B3	WHT
B13	YEL
B14	ORN
B15	PUR

Fig 1: Audio-Navigation Unit Connector B (24P)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -There is a short to body ground in the wire(s) between the audio-navigation unit and the auxiliary jack assembly. Replace the affected shielded harness.

NO -go to step 11.

Check for continuity between audio-navigation unit connector B (24P) according to the table.

AUDIO-NAVIGATION UNIT CONNECTOR CHART

From terminal

To terminals

B1 (BRN)

B2 (GRY)⁽¹⁾, B3 (WHT), B13 (YEL), B14 (ORN), B15 (PUR)

B2 (GRY)⁽¹⁾

B3 (WHT), B13 (YEL), B14 (ORN), B15 (PUR)

B3 (WHT)

B13 (YEL), B14 (ORN), B15 (PUR)

B13 (YEL)

B14 (ORN), B15 (PUR)

B14 (ORN)

B15 (PUR)

⁽¹⁾	Shielded wire

Fig 2: Audio-Navigation Unit Connector B (24P)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -There is a short in the wire(s) between the audio-navigation unit and the auxiliary jack assembly. Replace the affected shielded harness.

NO -go to step 12.

Check for continuity between audio-navigation unit connector B (24P) and the auxiliary jack assembly 5P connector according to the table.

AUDIO-NAVIGATION UNIT CONNECTOR CHART

Audio-navigation unit connector	Auxiliary jack assembly connector	Wire color
B1	3	BRN
B3	2	WHT
B13	4	YEL
B14	5	ORN
B15	1	PUR

Fig 3: Audio-Navigation Unit Connector B (24P)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 4: Auxiliary Jack Assembly 5P Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Substitute a known-good auxiliary jack assembly (see AUXILIARY JACK ASSEMBLY REPLACEMENT ), and recheck. If the symptom/indication goes away, replace the original auxiliary jack assembly. If the symptom/indication is still present, replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).

NO -There is an open in the wire(s) between the audio-navigation unit and the auxiliary jack assembly. Replace the affected shielded harness.