Honda Accord Electrical Troubleshooting Manual - part 123

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Connector Views

1 GRN/WHT 

(Recirc control)

2 BLK/YEL 

(Ignition ON input)

3 WHT/YEL 

(Battery input)

4 BRN/YEL 

(Rear window defogger ON output)

5 YEL/GRN 

(A/C ON output)

6 BLU/GRN 

(Mode 4 output)

7 LT GRN/BLK 

(Mode 3 output)

8 GRN/YEL 

(Mode 2 output)

9 BLK 

(Ground)

10 RED/BLK 

(Illumination (+))

11

12

13

14

15

16

17

18

19

20

21

22

1

2

3

4

5

6

7

8

9

10

54.

Heater Control Panel (Manual A/C)

– Green
– Center of dashboard
– On dashboard wire harness B (right branch)

11 GRN/RED 

(Fresh control)

12 RED/YEL 

(Air mix hot)

13 RED/WHT 

(Air mix cool)

14 BLU/WHT 

(Mode – VENT +)

15 BLU/BLK 

(Mode – DEF +)

16 GRY 

(Reference voltage)

17 YEL/GRN 

(Sensor ground)

18 GRN/BLK 

(Mode 1 output)

19 PNK/BLK 

(Air mix potential)

20 BRN 

(Evaporator temp sensor input)

21 GRN 

(Heater fan switch input)

22 RED 

(Illumination (–))

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Connector Views

1
2 BLK/YEL 

(Door open input)

3 ORN 

(Trunk open input)

4 With security: YEL/RED 

(Hood open input)

5 With security: BLU 

(Disarm switch input)

6 BLK/WHT 

(Lock output)

7 YEL/RED 

(Unlock relay control)

8 GRN/RED 

(Unlock output)

9 With security: RED 

(Siren control)

10 WHT/BLU 

(Battery input)

11 YEL/BLU 

(Ignition ON input)

11

12

13

14

15

16

17

18

19

20

21

22

1

2

3

4

5

6

7

8

9

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55.

Keyless or Keyless/Security Control Unit

– Green
– Mounted to driver’s dashboard lower cover
– On optional keyless or keyless/security harness

12
13 BLK 

(Ground)

14 With security: RED 

(LED control)

15 BLU/WHT 

(Key in ignition input)

16 BLK/WHT 

(Ceiling light control)

17 BLU/RED 

(Light flasher relay control)

18 LT GRN/BLU 

(Horn control)

19
20 GRN/BLU 

(Trunk opener relay control)

21 With security: WHT 

(Siren control)

22

Circuit Index

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Terminal Numbering

Terminal Numbering

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Connector Views

1 BLK 

(GND3)

2
3
4 GRN/RED 

(PARK)

5
6 BRN

L4: 

(FLW (–))

V6: 

(FLW (–))

7 GRN/BLU

L4: 

(FLW (+))

V6: 

(FLW (+))

8 GRN

L4: 

(FRW (–))

V6: 

(FRW (–))

9 GRN/BLK

L4: 

(FRW (+))

V6: 

(FRW (+))

10 WHT/BLK 

(STOP)

11 YEL/BLK 

(IG2)

12 BLK 

(GND4)

13
14 BRN 

(SCS)

15
16 GRN 

(MCK)

17 LT BLU

L4: 

(RLW (+))

V6: 

(RLW (+))

18 GRY

L4: 

(RLW (–))

V6: 

(RLW (–))

19 GRN/YEL

L4: 

(RRW (+))

V6: 

(RRW (+))

20 BLU/YEL

L4: 

(RRW (–))

V6: 

(RRW (–))

21 YEL/GRN 

(FSR)

22 LT BLU 

(DLC)

1

2

3

7

8

9

10

12

13

14

15

17

18

19

20

21

4

5

6

11

22

16

56.

ABS Control Unit (All except ’01-’02 V6)

– Behind left (L4) or right (V6) kick panel

Connector A

– Orange
– On left-side (L4) or right-side (V6) engine

compartment wire harness

1

7

8

2

4

5

10

11

12

6

3

9

1 BLU/WHT 

(WALP)

2 BLK 

(GND1)

3 YEL/WHT 

(RR-OUT)

4 YEL/BLU 

(FL-OUT)

5 YEL/GRN 

(RL-OUT)

6 YEL/BLK 

(FR-OUT)

7 BLK 

(GND2)

8 RED/WHT 

(RR-IN)

9 RED/BLU 

(FL-IN)

10 RED/GRN 

(RL-IN)

11 RED/BLK 

(FR-IN)

12 YEL/RED 

(PMR)

Connector B

– Orange
– On left-side (L4) or right-side (V6) engine

compartment wire harness

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Terminal Numbering

Terminal Numbering

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Connector Views

1 PNK/BLK 

(Air mix potential)

2 YEL/GRN 

(A/C ON output)

3 GRN/RED 

(Fresh control)

4 GRN/WHT 

(Recirc control)

5 BLU/BLK 

(Mode – DEF)

6 BLU/WHT 

(Mode – VENT)

7 RED/YEL 

(Air mix hot)

8 RED/BLK 

(Illumination (+))

9 RED/WHT 

(Air mix cool)

10 RED 

(Illumination (–))

11 YEL/GRN 

(Sensor ground)

12 WHT/RED

(Sunlight sensor input)

13 GRY 

(Reference voltage)

14 BRN 

(Evaporator temp

sensor input)

15 BRN/WHT

(Outside air temp input)

16 YEL/RED 

(In-car temp input)

17 BLU/GRN 

(Mode 4)

18 LT GRN/BLK 

(Mode 3)

19 GRN/YEL 

(Mode 2)

20 GRN/BLK 

(Mode 1)

11

12

13

14

15

16

17

18

19

20

1

2

3

4

5

6

7

8

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57.

Climate Control Unit

– Center of dashboard
– On dashboard wire harness B (right branch)

Connector A

– Black

1 BLK/YEL 

(Ignition ON input)

2 WHT/YEL 

(Fuse 13 – Pass.)

3 RED/WHT 

(Engine coolant temp. input)

4 BLU/ORN 

(Blower motor high relay control)

5 ORN/BLK 

(Power transistor control)

6 BLU/RED 

(Blower motor feedback)

7 BRN/YEL 

(Rear window defogger ON output)

8 BLK 

(G401)

7

6

8

5

4

3

1

2

Connector B

– Gray

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