HOSE AS 4W8403 - Caterpillar

PID Security LevelsThe following chart defines the PID within each security level for 3400 applications. For 3400 systems the CCM will not automatically respond to a Write Request with a Write Response. Therefore, a Write Request (IID 34) should always be followed with a Read Request (IID 24) for verification after 1 second. If the written value is greater than the maximum value of the parameter, the ECM will adjust the parameter to the maximum value that is allowed. If the written value is less than the minimum value of the parameter, the ECM will adjust the parameter to the minimum value that is allowed.
Table 1
PID Security Levels For 3400 Applications    
LEVEL NO.    PID    
0        
1     $00 $08 (R), $00 $15 (R), $00 $40 (R),
$00 $44 (R), $00 $46 (R), $00 $53 (R),
$00 $54 (R), $00 $55 (R), $00 $5A (R),
$00 $5B (R), $00 $5E (R), $00 $82 (R),
$00 $83 (R), $00 $84 (R), $00 $C8 (R),
$F0 $13 (R), $F0 $14 (R), $F0 $16 (R),
$F0 $1B (R), $F0 $2A (R), $F0 $2C (R),
$F0 $8F (R), $F0 $9C (R), $F0 $A6 (R),
$F0 $A8 (R), $F0 $A9 (R), $F0 $AA (R),
$F0 $AC (R), $F0 $B1 (R), $F0 $B2 (R),
$F0 $B5 (R), $F0 $C1 (R), $F0 $C2 (R),
$F1 $18 (R), $F1 $89 (R), $F1 $92 (R),
$F2 $13 (R), $F2 $4D (R), $F2 $8A (R),
$F4 $10 (R), $F4 $11 (R), $F4 $12 (R),
$F4 $17 (R), $F4 $5B (R), $F4 $6D (R),
$F4 $8F (R), $F4 $A0 (R), $F5 $0A (R),
$F5 $0B (R), $F5 $0D (R), $F5 $0E (R),
$F5 $0F (R), $F5 $10 (R), $F5 $11 (R),
$F5 $15 (R), $F5 $1D (R), $F5 $25 (R),
$F5 $3E (R), $F5 $E0 (R), $F8 $11 (R),
$F8 $14 (R), $F8 $1A (R), $FC $07 (R),
$FC $08 (R), $FC $09 (R)    
2     $00 $0D (W), $00 $83 (W), $F0 $14 (W),
$F0 $1B (W), $F0 $AC (W), $F0 $B1 (W),
$F0 $B2 (W), $F0 $C1 (W), $F0 $C2 (W),
$F2 $13 (W), $F4 $5B (W), $F5 $0A (W),
$F5 $0B (W), $F5 $0D (W), $F5 $10 (W),
$F8 $1A (W)    
3        Each Parameter Identifier (PID) has an identifier that is one or two bytes in length. The identifier is hexadecimal. The PID is followed by one or more data bytes. For example, the Engine RPM PID is $00 $40. This PID is followed by two bytes of data (aa) that contain the status of the Engine Speed. Data bits are given as binary digits unless the number is preceded by $. All data is sent with the most significant byte (MSB) first.The following chart is a quick reference list of the Parameter Identifiers (PID).
Table 2
Parameter Identifier Reference Chart for 3400 Applications    
PID    Description    
$00 $08
a     Engine Configuration
Used to read the engine configuration.    
$00 $0D
a     Remote Fault Reset
Used to read the status of or reset inactive shutdown and alarm faults on the ECM.    
$00 $15
a     Throttle Position
Used to read the position of the throttle