DTC B1236 or DTC indicator E and WINDSHIELD DEFROST: An Open in the Passenger's Air Mix Control Motor Circuit

Clear the DTCs with the HDS.
Turn the ignition switch to LOCK (0), and then back to ON (II).
Do the Self-Diagnostic Function with the HDS (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITH THE HDS ) or the climate control unit (see HOW TO USE THE CLIMATE CONTROL UNIT SELF-DIAGNOSTIC FUNCTION WITHOUT THE HDS ).
Check for DTCs.
Is DTC B1236 or E and WINDSHIELD DEFROST indicated?

YES -Go to step 5.

NO -Intermittent failure. Check for loose wires or poor connections on the passenger's air mix control motor circuit.
Turn the ignition switch to LOCK (0).
Test the passenger's air mix control motor (see PASSENGER'S AIR MIX CONTROL MOTOR TEST ).
Is the passenger's air mix control motor OK?

YES -Go to step 7.

NO -Replace the passenger's air mix control motor (see PASSENGER'S AIR MIX CONTROL MOTOR REPLACEMENT ).
Disconnect the passenger's air mix control motor 7P connector.
Disconnect climate control unit connectors A (28P) and B (16P).

Check for continuity between the following terminals of climate control unit connectors A (28P), B (16P)and the passenger's air mix control motor 7P connector.

CONTINUITY REFERENCE

28P:	7P:
No. 13	No. 1
No. 25	No. 3

Fig 1: Checking Continuity Between Terminals Of Climate Control Unit And Passenger's Air Mix Control Motor Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

CONTINUITY REFERENCE

16P:	7P:
No. 5	No. 5

Fig 2: Identifying Climate Control Unit Connector B (16P)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Check for loose wires or poor connections at climate control unit connectors A (28P) and B (16P) and at the passenger's air mix control motor 7P connector. If the connections are good, substitute a known-good climate control unit and recheck. If the symptom/indication goes away, replace the original climate control unit (see CLIMATE CONTROL UNIT REMOVAL/INSTALLATION ).

NO -Repair an open in the wire(s) between the climate control unit and the passenger's air mix control motor.