Audio System: Other Nissan Frontier D22

CREW CAB WITHOUT AMPLIFIER

Power is supplied at all times

1. through 15A fuse (No. 41, located in the fuse and fusible link box)
2. to audio unit terminal 6.

With the ignition switch in the ACC or ON position, power is supplied

1. through 10A fuse [No. 18, located in the fuse block (J/B)]
2. to audio unit terminal 10.

Ground is supplied through the case of the audio unit.

With the audio unit ON, audio signals are supplied

1. through audio unit terminals 2, 4, 14 and 16
2. to front door speakers, pillar tweeters and rear door speakers.

When the steering wheel audio control switches are pushed, audio signals are supplied

1. through audio unit terminal 23
2. to steering wheel audio control switch terminal 15 and
3. through steering audio control switch terminal 16
4. to audio unit terminal 24.

CREW CAB WITH AMPLIFIER

Power is supplied at all times

1. through 15A fuse (No. 41, located in fuse and fusible link box)
2. to audio unit terminal 6 and
3. through 30A fusible link (letter h, located in fuse and fusible link box)
4. to audio amplifier terminals 5 and 12.

With the ignition switch in the ACC or ON position, power is supplied

1. through 10A fuse [No. 18, located in fuse block (J/B)]
2. to audio unit terminal 10.

Ground is supplied through the case of the audio unit.

Ground is also supplied

1. through audio amplifier terminals 4 and 11
2. to body grounds M14 and M68.

With the audio unit ON, audio signals are supplied

1. through audio unit terminals 1, 2, 3, 4, 12, 13, 14, 15 and 16
2. to audio amplifier terminals 13, 15, 16, 17, 20, 21, 22, 23, and 24
3. through amplifier terminals 1, 2, 3, and 9
4. to front door speakers, pillar tweeters, rear speakers and subwoofer.

When the steering wheel audio control switches are pushed, audio signals are supplied

1. through audio unit terminal 23
2. to steering wheel audio control switch terminal 15 and
3. through steering audio control switch terminal 16
4. to audio unit terminal 24.

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Scheme 10

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Scheme 12

SPEAKER

1. Disconnect speaker harness connector.
2. Measure the resistance between speaker terminals + and -. The resistance should be 2 - 4ohm.
3. Using jumper wires, momentarily connect a 9V battery between speaker terminals + and -. A momentary hum or pop should be heard.

ANTENNA

1. Using a jumper wire, clip an auxiliary ground between antenna and body. If reception improves, check antenna ground (at body surface). If reception does not improve, check main feeder cable for short circuit or open circuit.

AUDIO UNIT

All voltage inspections are made with

1. Ignition switch ON or ACC
2. Audio unit ON
3. Audio unit connected (If removed for inspection, supply a ground to the case using a jumper wire.)

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Scheme 16