DTC B1202: A/C Control Panel Internal Error Honda Odyssey III

Note. Check the battery condition (see BATTERY TEST ) and the charging system (see CHARGING SYSTEM INDICATOR CIRCUIT TROUBLESHOOTING ). If you are trouble shooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Turn the ignition switch OFF then ON.
2. Turn the A/C control system on and operate several functions (A/C ON/OFF, air mix and blend door operations, temperature settings etc.).
3. Check for DTCs using the HDS. Is DTC B1202 indicated? YES - The A/C control panel is faulty, replace the A/C control panel. NO - Intermittent failure, the A/C control panel is OK at this time. Check for loose or poor connections at A/C control panel connector A (22P).

Scheme 142

1. Turn the ignition switch OFF then ON.
2. Turn the A/C control system on and operate several functions (A/C ON/OFF, air mix and blend door operations, temperature settings etc.).
3. Check for DTCs using the HDS. Is DTC indicated? YES - DTC B1205 indicated: go to step 4. DTC B1206 or B1207 indicated: go to step 5 . NO - Intermittent failure, the gauge control module and A/C control panel are OK at this time.
4. Check for DTCs using the HDS. Is DTC B1060 indicated? YES - Perform the gauge control module self test procedure (see «SELF-DIAGNOSTIC FUNCTION»(ref-221006-S19338012252006022200000) ). NO - The A/C control panel is faulty, replace the A/C control panel.
5. Disconnect the A/C control panel connector A (22P).
6. Remove the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(ref-221006-S24025336042006022200000) ).
7. Check for continuity between the No. 10 terminal of A/C control panel connector A (22P) and the No. 25 terminal of the gauge control module 30P connector. Is there continuity? YES - Check for loose wire or poor connections at A/C control panel connector A (22P) and at the gauge control module 30P connector. If the connections are good, substitute a known-good A/C control panel and/or gauge control module, and recheck. If the symptom/indication goes away, replace the original A/C control panel and/or gauge control module. NO - Repair open in the wire between the A/C control panel and the gauge control module.

Scheme 143

Scheme 144

Scheme 145

Scheme 146

1. Check the No. 30 (10 A) fuse in the driver's under-dash fuse/relay box. Is the fuse OK? YES - Go to step 2. NO - Replace the fuse, and recheck.
2. Disconnect the recirculation control motor 7P connector.
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No. 1 terminal of the recirculation control motor 7P connector and body ground. Is there battery voltage? YES - Go to step 5. NO - Repair open in the wire between the No. 30 (10 A) fuse in the driver's under-dash fuse/relay box and the recirculation control motor.
5. Turn the ignition switch OFF.
6. Test the recirculation control motor (see «RECIRCULATION CONTROL MOTOR TEST»(ref-220982-S27259531732006022200000) ). Is the recirculation control motor OK? YES - Go to step 7. NO - Replace the recirculation control motor (see «RECIRCULATION CONTROL MOTOR TEST»(ref-220982-S27259531732006022200000) ), or repair the recirculation control linkage or doors.
7. Disconnect A/C control panel connector A (22P).
8. Check for continuity between the No. 5 and No. 6 terminals of A/C control panel connector A (22P) and body ground individually. Is there continuity? YES - Repair any short to body ground in the wire(s) between the A/C control panel and the recirculation control motor. NO - Go to step 9.
9. Turn the ignition switch ON (II), and check the same terminals for voltage to body ground. Is there any voltage? YES - Repair any short to power in the wire(s) between the A/C control panel and the recirculation control motor. This short may also damage the A/C control panel. Repair the short to power before replacing the A/C control panel. NO - Go to step 10.
10. Turn the ignition switch OFF.
11. Check for continuity between the following terminals of A/C control panel connector A (22P) and the recirculation control motor 7P connector. A/C CONTROL PANEL CONNECTOR A (22P) AND RECIRCULATION CONTROL MOTOR 7P CONNECTOR 22P 7P No. 5 No. 5 No. 6 No. 7 Is there continuity? YES - Check for loose wires or poor connections at A/C control panel connector A (22P) and at the recirculation control motor 7P connector. If the connections are good, substitute a known-good A/C control panel, and recheck. If the symptom/indication goes away, replace the original A/C control panel. NO - Repair any open in the wire(s) between the A/C control panel and the recirculation control motor.

Scheme 147

Scheme 148

Scheme 149

Scheme 150

Scheme 151

Scheme 152

1. Check the No. 30 (10 A) fuse in the driver's under-dash fuse/relay box. Is the fuse OK? YES - Go to step 2. NO - Replace the fuse, and recheck.
2. Disconnect A/C control panel connector A (22P).
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No. 11 terminal of A/C control panel connector A (22P) 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 box and the A/C control panel.
5. Turn the ignition switch OFF.
6. Check for continuity between the No. 1 terminal of A/C control panel connector A (22P) and body ground. Is there continuity? YES - Go to step 7. NO - Check for an open in the wire between the A/C control panel and body ground. If the wire is OK, check for poor ground at G504.
7. Disconnect the rear A/C control panel 5P connector.
8. Turn the ignition switch ON (II).
9. Measure the voltage between the No. 3 terminal of rear A/C control panel 5P connector and body ground. Is there battery voltage? YES - Go to step 10. NO - Repair open in the wire between the No. 30 (10 A) fuse in the driver's under-dash fuse/relay box and the rear A/C control panel.
10. Turn the ignition switch OFF.
11. Check for continuity between the No. 1 terminal of the rear A/C control panel 5P connector and body ground. Is there continuity? YES - Go to step 12. NO - Check for an open in the BLK wire between the rear A/C control panel and body ground. If the wire is OK, check for poor ground at G601.
12. Disconnect A/C control panel connector B (14P).
13. Check for continuity between the No. 4 terminal of A/C control panel connector B (14P) and the No. 2 terminal of rear A/C control panel 5P connector. Is there continuity? YES - Go to step 14. NO - Repair open in the wire between the A/C control panel and rear A/C control panel.
14. Check for continuity between the No. 2 terminal of rear A/C control panel 5P connector and body ground. Is there continuity? YES - Repair short to body ground in the wire between the A/C control panel and the rear A/C control panel. NO - Check for loose wires or poor connections at A/C control panel connector A (22P), B (14P) and rear A/C control panel 5P connector. If the connections are good, substitute a known-good A/C control panel, and recheck. If the symptom/indication is still present, substitute a known-good A/C control panel, and recheck.