Acura TSX / Honda Accord CL. Manual — part 662

(16P) and body ground individually.

Is there continuity?

YES: Repair any short to body ground in the wire(s) between the audio-HVAC display panel
and the recirculation control motor.

NO: Go to step 9.

Fig. 66: Checking For Continuity Between The No. 10 & No. 11 Terminals Of Audio-HVAC
Display Panel Connector B (16P) & Body Ground

9. Turn the ignition switch ON (II), and check the same wires for voltage.

Is there any voltage?

YES: Repair any short to power in the wire(s) between the audio-HVAC display panel and
the recirculation control motor. This short may also damage the audio-HVAC display panel.
Repair the short to power before replacing the audio-HVAC display panel.

NO: Go to step 10.

2004 Acura TSX

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

Fig. 67: Checking For Voltage Between The No. 10 & No. 11 Terminals Of Audio-HVAC
Display Panel Connector B (16P) & Body Ground

10. Turn the ignition switch OFF.

11. Check for continuity between the following terminals of audio-HVAC display panel connector B (16P)

and the recirculation control motor 7P connector.

Is there continuity?

YES: Check for loose wire or poor connections at audio-HVAC display panel connector B
(16P) and at the recirculation control motor. If the connections are good, substitute a known-
good audio-HVAC display panel, and recheck. If the symptom/indication goes away, replace
the original audio-HVAC display panel.

NO: Repair any open in the wire(s) between the audio-HVAC display panel and the
recirculation control motor.

CONNECTOR CONTINUITY TESTING

Audio-HVAC Display Panel Connector B (16P)
Terminal No.

Recirculation Control Motor 7P Conn

Termin

10
11

2004 Acura TSX

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

Fig. 68: Checking For Continuity Between The Terminals Of Audio-HVAC Display Panel
Connector B (16P) & The Recirculation Control Motor 7P Connector

CLIMATE CONTROL POWER & GROUND CIRCUIT TROUBLESHOOTING

1. Check the No. 30 (7.5A) fuse in the under-dash fuse/relay box.

Is the fuse OK?

YES: Go to step 2.

NO: Replace the fuse, and recheck.

2. Disconnect audio-HVAC display panel connector B (16P).

3. Turn the ignition switch ON (II).

4. Measure the voltage between the No. 4 terminal of audio-HVAC display panel connector B (16P) and

body ground.

Is there battery voltage?

YES: Go to step 5.

NO: Repair open in the wire between the No. 30 fuse in the driver's under-dash fuse/relay

2004 Acura TSX

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

box and the audio-HVAC display panel.

Fig. 69: Measuring The Voltage Between The No. 4 Terminal Of Audio-HVAC Display Panel
Connector B (16P) & Body Ground

5. Turn the ignition switch OFF.

6. Check for continuity between the No. 6 terminal of audio-HVAC display panel connector B (16P) and

body ground.

Is there continuity?

YES: Check for loose wire or poor connections at audio-HVAC display panel connector B
(16P). If the connections are good, substitute a known-good audio-HVAC display panel, and
recheck. If the symptom/indication goes away, replace the original audio-HVAC display
panel.

NO: Check for an open in the wire between the audio-HVAC display panel and body
ground. If the wire is OK, check for poor ground at G503.

2004 Acura TSX

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX