0439755 JOHNSON CARBURETOR BODY ASSY., 150JPL

Table 1
Application Unit Number
G3600 13
G3500 Air/Fuel Ratio 12
G3400 EIS & G3500 EIS ØE Although the CCM can handle a broadcast of all lists in 0.5 seconds, the data will not be refreshed as fast. If the total number of parameters (excluding combustion probe parameters) exceeds 16, then a more reasonable update rate would be one second.The CCM stores all information in non-volatile memory. This means the CCM needs to be programmed only once. After that, each time the power is applied, the CCM will start sending data at the desired time intervals as previously programmed.All command messages must be terminated with a carriage return after the checksum. In this manual the carriage return will be shown as follows: <cr>. The <cr> is a hexadecimal ØD and is NOT converted to ASCII.IID 10 - Broadcast Response
This IID is used to broadcast data. The CCM will send this message if the time to broadcast data has elapsed. In order to send an IID 10 message, ALL of the parameters must be present on the CAT data link. This means that if there are eight parameters requested and only seven are present on the CAT data link, the IID 10 message will not be sent. When IID 10 is used, the data will be two bytes in length. If a parameter only has one data byte, zeros will be added in front of the data. An example of the IID 10 message is: 5061101B0113,ddd1,ddd2,ddd3, ddd4,ddd5,ddd6,ddd7,ddd8,cs<cr>.
Table 2
IID 10 - Broadcast Response
Byte(s) Description
1-4 Standard preamble (50 xxyyzz)
5 Parameter List Number
$01 - $08 show which list 1 through 8 is being sent.
6 Unit Number
13 for G3600 ESS system
12 for G3500 Air/Fuel Ratio system
ØE for EIS system
7 Separator
8,9 1st PID
10 Separator
11, 12 2nd PID
13 Separator
14, 15 3rd PID
16 Separator
17, 18 4th PID
19 Separator
20, 21 5th PID
22 Separator
23, 24 6th PID
25 Separator
26, 27 7th PID
28 Separator
29, 30 8th PID
31 Separator
32 Checksum of message A separator can be a comma, space, or none. A separator is NOT converted to ASCII.IID 11 - Activate a Broadcast List
This IID is used in order to activate a broadcast list that has been programmed. When a list is programmed into the CCM, the list is set to be deactivated. The list will stay deactivated until a valid IID 11 message is received. After receiving an IID 11 message, the CCM responds with an IID 15 message. The IID 15 message is for verification of the IID 11 message. If the IID 11 message is valid and the list is programmed, broadcasting of the data will start. Lists can be activated and deactivated at any time without being reprogrammed.A typical IID 11 example is: 5000110101cs.
Table 3
IID 11- Activate a Broadcast List
Byte(s) Description
1-4 Standard preamble (50 xxyyzz)
5 Parameter List Number
$01 - $08 show which list 1 through 8 is being sent.
6 Checksum of message IID 12 - Deactivate a Broadcast List
This IID is used in order to deactivate a broadcast list that has been programmed. A list will stay activated until a valid IID 12 message is received. Upon receiving a IID 12 message, the CCM responds with a IID 15 message. This is used to indicate the validity of the message. If the IID 12 message is valid, the broadcasting of the data will stop. Lists can be activated and deactivated at any time without being reprogrammed.A typical IID 12 example is: 5000120101cs.
Table 4
IID 12 - Deactivate a Broadcast List
Byte(s) Description
1-4 Standard preamble (50 xxyyzz)
5 Parameter List Number
$01 - $08 show which list 1 through 8 is being sent.
6 Checksum of message IID 13 - Create a Broadcast List
This IID is used in order to program a broadcast list. After receiving an IID 13 command message, the CCM responds with an IID 15 message. If the command message is valid, the list will be programmed in the CCM. This IID has several different flags that need to be decided upon at the time of programming. Request Time This time is used to tell the CCM the time interval at which a particular list should be sent. The maximum time is 127.5 seconds in 0.5 second intervals. Programming Flags Available programming options include the following:
Response Format - ASCII or BINARY
Message Terminators - (CR) or (CR+LF) (CR) = Carriage Return (LF) = Line Feed
Data Separator - comma, space, or none. ParametersThe message must contain eight parameters. Even if the number of desired parameters is only four, the remaining four parameters must be filled with zeros (0). The broadcast response (IID 10) will only contain data for the nonzero parameters.A typical IID 13 example is: 500013150113010000ddd1ddd2ddd3ddd4 ddd5ddd6ddd7ddd8cs
Table 5
IID 13 - Create a Broadcast List
Byte(s) Description
1-4 Standard preamble (50 xxyyzz)
5 Parameter List Number
$01 - $08 shows which list 1 through 8 is being programmed.
6 Unit Number
13 for G3600 ESS system
12 for G3500 Air/Fuel Ratio system
ØE for EIS system
7 Time (between list or parameters)
Resolution: 0.5 second per bit
Data range: 0 to 127.5 ($00 to $FF)
8, 9 Programming flags
Bit 1
0 = ASCII
1 = Binary
Bit 3, 2
00 = Message terminated by carriage return
01 = Message terminated by carriage return and line feed
Bit 4
0 = Always
Bit 6, 5
00 = Comma separator
01 = Space separator
10 = No separator
Bit 7-16 Reserved for future use
10, 11 1st PID(1)
12, 13 2nd PID(1)