Nothing for the smog pump itself, it's always pumping, I believe.THERMACTOR AIR STRATEGY
Thermactor air refers to air added to the exhaust gas mixture from the
belt-driven thermactor air pump.
The computer controls two solenoids to create three mutually exclusive air
states:
Thermactor Air State AM1 Solenoid AM2 Solenoid
Upstream on on
Downstream on off
Bypass off off
Code: Select all
FNTP_AIR_OFF (N_RPM) := TP_REL at which to dump air below.
b656: ff,ff,00,00 func 65535, 0
b65a: 00,00,00,00 func 0, 0
b65e: 00,00,00,00 func 0, 0
b662: 00,00,00,00 func 0, 0
b666: 00,00,00,00 func 0, 0
b66a: 00,00,00,00 func 0, 0
b66e: 00,00,00,00 func 0, 0
b672: 00,00,00,00 func 0, 0
b676: 00,00,00,00 func 0, 0Code: Select all
THERMACTOR_AIR_STRATEGY:
6de0: b3,f6,4a,38 ldb R38,[Rf6+4a] R38 = CTBYS; # Minimum coolant temperature to bypass thermactor air, deg F.
6de4: 98,38,b6 cmpb Rb6,R38
6de7: da,05 jle 6dee if (ECT > R38) {
6de9: 91,20,a4 orb Ra4,20 TAQ1 = 1;
6dec: 20,0c sjmp 6dfa goto 6dfa; }
6dee: 7b,f6,4b,38 sb2b R38,[Rf6+4b] R38 -= CTBYSH; # CTBYS - CTBYSH = Hysteresis term for CTBYS, deg F.
6df2: 98,38,b6 cmpb Rb6,R38
6df5: d6,03 jge 6dfa if (ECT < R38) {
6df7: 71,df,a4 an2b Ra4,df TAQ1 = 0; }
6dfa: ef,e9,da call 48e6 UUWFuncLU_48e6 (
6dfd: 14,42 #arg 1 FNTP_AIR_OFF,
6dff: b4,00 #arg 2 N_RPM );
6e01: 88,00,38 cmpw R38,R0
6e04: df,10 je 6e16 if (R38 != 0) {
6e06: 47,f5,90,00,38,36 ad3w R36,R38,[Rf4+90] R36 = R38 + TP_AIR_OFF_H;
6e0c: d3,03 jnc 6e11 if (R36 > ffff) {
6e0e: bd,ff,36 ldsbw R36,ff swR36 = ff; }
6e11: 88,bc,36 cmpw R36,Rbc
6e14: d9,05 jgtu 6e1b if (R36 > TP_REL) goto 6e1b; }
6e16: 71,fb,d6 an2b Rd6,fb TP_AIR_OFF_F = 0; # (allow air)
6e19: 20,08 sjmp 6e23 goto 6e23; }
6e1b: 88,bc,38 cmpw R38,Rbc
6e1e: d1,03 jleu 6e23 if (R38 > TP_REL) {
6e20: 91,04,d6 orb Rd6,4 TP_AIR_OFF_F = 1; } # (dump air)
6e23: 71,fb,25 an2b R25,fb CHKAIR = 0; # (force O.L.)
6e26: 8b,ea,ae,00 cmpw R0,[Rea+ae]
6e2a: d7,6c jne 6e98 if (DFSO_A_TMR = 0) {
6e2c: 3f,a5,69 jb B7,Ra5,6e98 if (b7_CRKFLG_a5 = 0) {
6e2f: 51,af,a6,32 an3b R32,Ra6,af R32 = (B0_ETV_ERROR_a6|
B1__a6|
B2_TFMFLG_a6|
B3_MFMFLG_a6|
B5_CFMFLG_a6|
B7_AFMFLG_a6);
6e33: d7,63 jne 6e98 if (R32 = 0) {
6e35: b3,e4,ce,30 ldb R30,[Re4+ce] R30 = [14e];
6e39: 9b,f6,47,30 cmpb R30,[Rf6+47]
6e3d: db,59 jc 6e98 if (R30 < [b95b]) {
6e3f: 31,27,06 jnb B1,R27,6e48 if (B1_DFSFLG_R27 = 1) {
6e42: 9b,f6,4c,00 cmpb R0,[Rf6+4c]
6e46: d7,50 jne 6e98 if ([b960] != 0) goto 6e98; }
6e48: 45,44,00,f6,30 ad3w R30,Rf6,44 R30 = b958;
6e4d: ef,ce,db call 4a1e Sub_4a1e ();
6e50: d3,46 jnc 6e98 if (R42 >= [R30+2]) {
6e52: 3d,a4,43 jb B5,Ra4,6e98 if (TAQ1 = 0) {
6e55: b3,ee,84,42 ldb R42,[Ree+84] R42 = KAM_BIT_FLAGS;
6e59: 3d,42,3c jb B5,R42,6e98 if (B5_R42 = 0) {
6e5c: b3,e4,d2,30 ldb R30,[Re4+d2] R30 = WOTTMR;
6e60: 9b,f6,41,30 cmpb R30,[Rf6+41]
6e64: d3,03 jnc 6e69 if (R30 >= BYPWOT) {
6e66: 3a,a5,2f jb B2,Ra5,6e98 if (B2_APT_a5 = 1) goto 6e98; }
6e69: 36,25,06 jnb B6,R25,6e72 if (B6_MPGFLG_25 = 1) {
6e6c: 9b,f6,52,00 cmpb R0,[Rf6+52]
6e70: d7,26 jne 6e98 if (SW_MPD != 0) goto 6e98; }
6e72: 3a,d6,23 jb B2,Rd6,6e98 if (TP_AIR_OFF_F = 0) {
6e75: 9b,f4,5f,00 cmpb R0,[Rf4+5f]
6e79: df,03 je 6e7e if (T75LSW != 0) {
6e7b: 32,9f,1a jnb B2,R9f,6e98 if (B2_OLFLG = 0) goto 6e98; }
6e7e: b3,e4,cf,30 ldb R30,[Re4+cf] R30 = LMBTMR;
6e82: 9b,f6,48,30 cmpb R30,[Rf6+48]
6e86: db,0a jc 6e92 if (R30 < [b95c]) {
6e88: b3,e4,ca,30 ldb R30,[Re4+ca] R30 = [14a];
6e8c: 9b,f6,40,30 cmpb R30,[Rf6+40]
6e90: d7,10 jne 6ea2 if (R30 != [b954]) goto 6ea2; }
6e92: 9b,f6,49,00 cmpb R0,[Rf6+49]
6e96: df,03 je 6e9b if ([b95d] = 0) goto 6e9b; } } } } } } } } } } } }
6e98: 91,04,25 orb R25,4 CHKAIR = 1; } # (not forced O.L.)
6e9b: 71,bf,47 an2b R47,bf AM2 = 0;
6e9e: 71,fe,46 an2b R46,fe AM1 = 0;
6ea1: f0 ret return; } # (bypass air)
6ea2: 45,58,00,f6,30 ad3w R30,Rf6,58 R30 = b96c;
6ea7: 3a,8f,05 jb B2,R8f,6eaf if (B2_R8f = 0) {
6eaa: 45,55,00,f6,30 ad3w R30,Rf6,55 R30 = b969; }
6eaf: ef,6c,db call 4a1e Sub_4a1e ();
6eb2: d3,2b jnc 6edf if (R42 >= [R30+2]) {
6eb4: b3,e4,c9,30 ldb R30,[Re4+c9] R30 = [149];
6eb8: 9b,f6,5b,30 cmpb R30,[Rf6+5b]
6ebc: db,03 jc 6ec1 if (R30 < [b96f]) {
6ebe: 3a,a5,1e jb B2,Ra5,6edf if (B2_APT_a5 = 1) goto 6edf; }
6ec1: 37,24,0a jnb B7,R24,6ece if (B7_HUMTMR_FLG_24 = 1) {
6ec4: b3,e4,cc,30 ldb R30,[Re4+cc] R30 = HMUTMR;
6ec8: 9b,f6,54,30 cmpb R30,[Rf6+54]
6ecc: d3,11 jnc 6edf if (R30 < [b968]) goto 6edf; }
6ece: 9b,f6,53,00 cmpb R0,[Rf6+53]
6ed2: df,03 je 6ed7 if ([b967] != 0) {
6ed4: 3a,9f,08 jb B2,R9f,6edf if (B2_OLFLG = 1) goto 6edf; }
6ed7: 91,04,25 orb R25,4 CHKAIR = 1; # (not forced O.L.)
6eda: 71,bf,47 an2b R47,bf AM2 = 0; # (downstream air)
6edd: 20,03 sjmp 6ee2 goto 6ee2; } } } }
6edf: 91,40,47 orb R47,40 AM2 = 1; # (upstream air)
6ee2: 91,01,46 orb R46,1 AM1 = 1;
6ee5: f0 ret return;
Upstream refers to air added at or near the exhaust ports. This is done to
provide better oxidation of the exhaust gas mixture when a richer exhaust gas
mixture is anticipated. It is not possible to operate in closed loop fuel
control while air is introduced upstream (the EGO sensor may always indicate
a lean condition).