Page 705 of 2893

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NO YES
NO
11-376EVAP System
DTC Troubleshooting (cont’d)
PCS (YEL/BLU)
EVAP CANISTER PURGE VALVE
2P CONNECTOR
IG1 (BLK/YEL)
EVAP CANISTER PURGE VALVE
2P CONNECTOR
11. Jump the SCS line with the HDS.
12. Disconnect ECM/PCM connector B (44P).
13. Check for continuity between EVAP canister purge
valve 2P connector terminal No. 2 and body ground.
Repair short in the wire between the EVAP
canister purge valve and the ECM/PCM (B3), then
go to step 24.
Go to step 30.
14. Turn the ignition switch to LOCK (0).
15. Disconnect the EVAP canister purge valve 2P connector.
16. Turn the ignition switch to ON (II). 17. Measure the voltage between EVAP canister purge
valve 2P connector terminal No. 1 and body ground.
Go to step 18.
Repair open in the wire between the EVAP
canister purge valve and the No. 3 ALTERNATOR
(10 A) fuse in the under-dash fuse/relay box, then
go to step 24.
18. Turn the ignition switch to LOCK (0).
19. Jump the SCS line with the HDS.
20. Disconnect ECM/PCM connector B (44P).
Wire side of female terminals Wire side of female terminals
Is there continuity?
Is there battery voltage?
08/08/21 14:32:33 61SNR030_110_0376
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Page 706 of 2893

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NO YES
NO
11-377
ECM/PCM CONNECTOR B (44P)
EVAP CANISTER PURGE VALVE
2P CONNECTOR
PCS (YEL/BLU) PCS (YEL/BLU)
EVAP CANISTER PURGE VALVE
2P CONNECTOR
21. Check for continuity between ECM/PCM connector
terminal B3 and EVAP canister purge valve 2P
connector terminal No. 2.
Go to step 22.
Repair open in the wire between the EVAP
canister purge valve and the ECM/PCM (B3), then
go to step 24. 22. At the valve side, measure the resistance between
EVAP canister purge valve 2P connector terminals
No. 1 and No. 2.
Go to step 30.
Go to step 23.
23. Replace the EVAP canister purge valve (see page 11-409).
24. Reconnect all connectors.
25. Turn the ignition switch to ON (II).
26. Reset the ECM/PCM with the HDS.
27. Do the ECM/PCM idle learn procedure (see page 11-310).
(cont’d)
Wire side of
female terminals
Terminal side of female terminals Terminal side of male terminals
Is there continuity?
Is t her e about 25 at r oom t emper at ur e?
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Page 707 of 2893

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NO
YES
NO
YES
NO
YES
NO
11-378EVAP System
DTC Troubleshooting (cont’d)
28. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the EVAP canister purge valve and the
ECM/PCM, then go to step 1.
Go to step 29.
29. Monitor the OBD STATUS for DTC P0443 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 28,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the EVAP canister
purge valve and the ECM/PCM, then go to step 1. If
the screen indicates EXECUTING or OUT OF
CONDITION, keep idling until a result comes on. 30. Reconnect all connectors.
31. Update the ECM/PCM if it does not have the latest
software (see page 11-227), or substitute a known-
good ECM/PCM (see page 11-7).
32. Start the engine, and let it idle.
33. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the EVAP canister purge valve and the
ECM/PCM. If the ECM/PCM was updated, substitute
a known-good ECM/PCM (see page 11-7), then go
to step 32. If the ECM/PCM was substituted, go to
step 1.
Go to step 34.
34. Monitor the OBD STATUS for DTC P0443 in the DTCs MENU with the HDS.
If the ECM/PCM was updated,
troubleshooting is complete. If the ECM/PCM was
substituted, replace the original ECM/PCM
(see page 11-228). If any other Temporary DTCs or
DTCs were indicated in step 33, go to the indicated
DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the EVAP canister
purge valve and the ECM/PCM. If the ECM/PCM
was updated, substitute a known-good ECM/PCM
(see page 11-7), then go to step 32. If the ECM/PCM
was substituted, go to step 1. If the screen indicates
EXECUTING or OUT OF CONDITION, keep idling
until a result comes on.
Is DTC P0443 indicated?
Does t he scr een i nd i cat e PASSE D? Is DTC P0443 indicated?
Does t he scr een i nd i cat e PASSE D?
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DTC P0451:
YES
NO
YES
NO YES
NO
11-379
FTP Sensor Circuit Range/
Performance Problem
NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
If DTC P2422 is stored at the same time as DTC P0451, troubleshoot DTC P2422 first, then recheck for DTC
P0451.
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine, and let it idle for 1 minute.
4. Monitor the OBD STATUS for DTC P0451 in the DTCs MENU with the HDS.
Go to step 5.
If the screen indicates PASSED, intermittent
failure, the system is OK at this time. Check for
poor connections or loose terminals at the FTP
sensor and the ECM/PCM. If the screen indicates
NOT COMPLETED, keep idling until a result comes
on.
5. Turn the ignition switch to LOCK (0).
6. Replace the FTP sensor (see page 11-408).
7. Turn the ignition switch to ON (II).
8. Reset the ECM/PCM with the HDS.
9. Do the ECM/PCM idle learn procedure (see page 11-310).
10. Start the engine, then let it idle for 1 minute.
11. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the FTP sensor and the ECM/PCM, then
go to step 1.
Go to step 12. 12. Monitor the OBD STATUS for DTC P0451 in the
DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 11,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the FTP sensor
and the ECM/PCM, then go to step 1. If the screen
indicates NOT COMPLETED, keep idling until a
result comes on.
Does t he scr een i nd i cat e F AILE D?
Is DTC P0451 indicated? Does t he scr een i nd i cat e PASSE D?
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Page 709 of 2893

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DTC P0452:
YES
NO
YES
NO YES
NO
YES
NO
11-380EVAP System
DTC Troubleshooting (cont’d)
FTP SENSOR 3P CONNECTOR
VCC6 (BLU)
FTP Sensor Circuit Low Voltage
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0).
4. Remove the fuel fill cap.
5. Turn the ignition switch to ON (II).
6. ChecktheFTPSENSORintheDATALISTwiththe HDS.
Go to step 10.
Go to step 7.
7. Install the fuel fill cap.
8. Start the engine, and let it idle.
9. Monitor the OBD STATUS for DTC P0452 in the DTCs MENU with the HDS.
Go to step 10.
If the screen indicates PASSED, intermittent
failure, the system is OK at this time. Check for
poor connections or loose terminals at the FTP
sensor and the ECM/PCM. If the screen indicates
NOT COMPLETED, go to step 4 and recheck. 10. Turn the ignition switch to LOCK (0).
11. Disconnect the FTP sensor 3P connector.
12. Turn the ignition switch to ON (II).
13. ChecktheFTPSENSORintheDATALISTwiththe
HDS.
Go to step 14.
Go to step 24.
14. Measure the voltage between FTP sensor 3P connector terminal No. 1 and body ground.
Go to step 20.
Go to step 15.
Wire side of female terminals
I s about 7 .3 k Pa ( 5 5 mmH g, 2.16 i n.H g), or 0.3 V or less indicated?
Does t he scr een i nd i cat e F AILE D? I s about 7 .3 k Pa ( 5 5 mmH g, 2.16 i n.H g), or
0.3 V or less indicated?
Is t her e about 5 V ?
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Page 710 of 2893

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11-381
FTP SENSOR 3P CONNECTOR
VCC6 (BLU)
JUMPER WIRE
ECM/PCM CONNECTOR A (44P) VCC6
(RED) FTP SENSOR 3P CONNECTOR
FTP (LT GRN)
15. Turn the ignition switch to LOCK (0).
16. Jump the SCS line with the HDS.
17. Disconnect ECM/PCM connector A (44P).
18. Connect FTP sensor 3P connector terminal No. 1 tobody ground with a jumper wire.
19. Check for continuity between ECM/PCM connector terminal A19 and body ground.
Go to step 32.
Repair open in the wire between the ECM/
PCM (A19) and the FTP sensor, then go to step 26. 20. Turn the ignition switch to LOCK (0).
21. Jump the SCS line with the HDS.
22. Disconnect ECM/PCM connector A (44P).
23. Check for continuity between FTP sensor 3P
connector terminal No. 2 and body ground.
Repair short in the wire between the ECM/
PCM (A26) and the FTP sensor, then go to step 26.
Go to step 32.
(cont’d)
Wire side of female terminals
Terminal side of female terminals Wire side of female terminals
Is there continuity?
Is there continuity?
08/08/21 14:32:34 61SNR030_110_0381
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Page 711 of 2893

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NO YES
NO
YES
NO
11-382EVAP System
DTC Troubleshooting (cont’d)
24. Turn the ignition switch to LOCK (0).
25. Replace the FTP sensor (see page 11-408).
26. Reconnect all connectors.
27. Turn the ignition switch to ON (II).
28. Reset the ECM/PCM with the HDS.
29. Do the ECM/PCM idle learn procedure (see page
11-310).
30. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the FTP sensor and the ECM/PCM, then
go to step 1.
Go to step 31.
31. Monitor the OBD STATUS for DTC P0452 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 30,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the FTP sensor
and the ECM/PCM, then go to step 1. If the screen
indicates NOT COMPLETED, keep idling until a
result comes on. 32. Reconnect all connectors.
33. Update the ECM/PCM if it does not have the latest
software (see page 11-227), or substitute a known-
good ECM/PCM (see page 11-7).
34. Start the engine, and let it idle.
35. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the FTP sensor and the ECM/PCM. If
the ECM/PCM was updated, substitute a known-
good ECM/PCM (see page 11-7), then go to step 34.
If the ECM/PCM was substituted, go to step 1.
Go to step 36.
36. Monitor the OBD STATUS for DTC P0452 in the DTCs MENU with the HDS.
If the ECM/PCM was updated,
troubleshooting is complete. If the ECM/PCM was
substituted, replace the original ECM/PCM
(see page 11-228). If any other Temporary DTCs or
DTCs were indicated in step 35, go to the indicated
DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the FTP sensor
and the ECM/PCM. If the ECM/PCM was updated,
substitute a known-good ECM/PCM (see page 11-7),
then go to step 34. If the ECM/PCM was substituted,
go to step 1. If the screen indicates NOT
COMPLETED, keep idling until a result comes on.
Is DTC P0452 indicated?
Does t he scr een i nd i cat e PASSE D? Is DTC P0452 indicated?
Does t he scr een i nd i cat e PASSE D?
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DTC P0453:
YES
NO
YES
NO YES
NO
YES
NO
11-383
FTP SENSOR 3P CONNECTOR
SG6
(BLK)
FTP
(LT GRN)
JUMPER WIRE
FTP SENSOR 3P CONNECTOR SG6
(BLK)
VCC6
(BLU)
FTP Sensor Circuit High Voltage
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0).
4. Remove the fuel fill cap.
5. Turn the ignition switch to ON (II).
6. ChecktheFTPSENSORintheDATALISTwiththe HDS.
Go to step 10.
Go to step 7.
7. Install the fuel fill cap.
8. Start the engine, and let it idle.
9. Monitor the OBD STATUS for DTC P0453 in the DTCs MENU with the HDS.
Go to step 10.
If the screen indicates PASSED, intermittent
failure, the system is OK at this time. Check for
poor connections or loose terminals at the FTP
sensor and the ECM/PCM. If the screen indicates
NOT COMPLETED, go to step 4 and recheck.
10. Turn the ignition switch to LOCK (0).
11. Disconnect the FTP sensor 3P connector. 12. Connect FTP sensor 3P connector terminals No. 2
andNo.3withajumperwire.
13. Turn the ignition switch to ON (II).
14. ChecktheFTPSENSORintheDATALISTwiththe HDS.
Go to step 15.
Go to step 26.
15. Measure the voltage between FTP sensor 3P connector terminals No. 1 and No. 3.
Go to step 21.
Go to step 16.
(cont’d)
Wire side of female terminals
Wire side of female terminals
I s about 7 .3 k P a ( 5 5 mmH g, 2 .16 i n.H g), or 4.7 Vor more indicated?
Does t he scr een i nd i cat e F AILE D? I s about 7 .3 k P a ( 5 5 mmH g, 2 .16 i n.H g), or 4.7 V
or more indicated?
Is t her e about 5 V ?
08/08/21 14:32:35 61SNR030_110_0383
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