Honda Ridgeline. Manual — part 142
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YES
NO
YES
NO
YES
NO
YES
NO
11-332
EGR System
DTC Troubleshooting (cont’d)
32. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the EGR valve and the PCM, then go to
step 34.
Go to step 33.
33. Monitor the OBD STATUS for DTC P0404 in the
DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 32,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the EGR valve
and the PCM, then go to step 1. If the screen
indicates EXECUTING, keep driving until a result
comes on. If the screen indicates OUT OF
CONDITION, go to step 30.
34. Update the PCM if it does not have the latest
software (see page 11-7), or substitute a known-
good PCM (see page 11-8).
35. Start the engine. Hold the engine speed at
3,000 rpm without load (in Park or neutral) until the
radiator fan comes on, then let it idle.
36. Do the EGR TEST in the INSPECTION MENU with
the HDS.
37. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the EGR valve and the PCM. If the PCM
was updated, substitute a known-good PCM
(see page 11-8), then go to step 35. If the PCM was
substituted, go to step 1.
Go to step 38.
38. Monitor the OBD STATUS for DTC P0404 in the
DTCs MENU with the HDS.
If the PCM was updated, troubleshooting is
complete. If the PCM was substituted, replace the
original PCM (see page 11-205). If any other
Temporary DTCs or DTCs were indicated in step 37,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the EGR valve
and the PCM. If the PCM was updated, substitute a
known-good PCM (see page 11-8), then go to step
35. If the PCM was substituted, go to step 1. If the
screen indicates NOT COMPLETED, go to step 35.
Is DT C P0404 indicated?
Does the scr een indicate PASSED?
Is DT C P0404 indicated?
Does the scr een indicate PASSED?
01
02
SJC8A00K77100090406FAAT30
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DTC P0406:
YES
NO
YES
NO
YES
NO
11-333
EGR VALVE 6P CONNECTOR
VCC2 (YEL/BLU)
SG2 (GRN/YEL)
PCM CONNECTOR C (44P)
EGR VALVE 6P CONNECTOR
SG2 (GRN/YEL)
SG2 (GRN/YEL)
EGR Valve Position 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 ON (II).
2. Check the EGR VLS in the DATA LIST with the HDS.
Go to step 3.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the EGR valve and the PCM.
3. Turn the ignition switch OFF.
4. Disconnect the EGR valve 6P connector.
5. Turn the ignition switch ON (II).
6. Measure voltage between EGR valve 6P connector
terminals No. 2 and No. 3.
Go to step 11.
Go to step 7.
7. Turn the ignition switch OFF.
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector C (44P).
10. Check for continuity between PCM connector
terminal C14 and EGR valve 6P connector terminal
No. 2.
Go to step 18.
Repair open in the wire between the EGR
valve and the PCM (C14), then go to step 13.
11. Turn the ignition switch OFF.
12. Replace the EGR valve (see page 11-342).
13. Reconnect all connectors.
14. Turn the ignition switch ON (II).
15. Reset the PCM with the HDS.
16. Do the PCM idle learn procedure (see page 11-273).
(cont’d)
Wire side of female terminals
Wire side of
female terminals
Terminal side of female terminals
Is 4.88 V or mor e indicated?
Is ther e about 5 V ?
Is ther e continuity?
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YES
NO
YES
NO
11-334
EGR System
DTC Troubleshooting (cont’d)
17. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the EGR valve and the PCM, then go to
step 1.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
18. Reconnect all connectors.
19. Update the PCM if it does not have the latest
software (see page 11-7), or substitute a known-
good PCM (see page 11-8).
20. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the EGR valve and the PCM. If the PCM
was updated, substitute a known-good PCM
(see page 11-8), then recheck. If the PCM was
substituted, go to step 1.
If the PCM was updated, troubleshooting is
complete. If the PCM was substituted, replace the
original PCM (see page 11-205). If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
Is DT C P0406 indicated?
Is DT C P0406 indicated?
01
SJC8A00K77100092413FAAT30
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−
−
−
−
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DTC P2413:
YES
NO
YES
NO
YES
NO
11-335
EGR VALVE 6P CONNECTOR
VCC2 (YEL/BLU)
EGR System Malfunction
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 ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed at
3,000 rpm without load (in Park or neutral) until the
radiator fan comes on, then let it idle.
4. Do the EGR TEST in the INSPECTION MENU with
the HDS.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the EGR valve and the PCM.
Go to step 5.
5. Turn the ignition switch OFF.
6. Turn the ignition switch ON (II).
7. Check the EGR VLS in the DATA LIST with the HDS.
Go to step 8.
Go to step 21.
8. Turn the ignition switch OFF.
9. Disconnect the EGR valve 6P connector.
10. Turn the ignition switch ON (II).
11. Measure voltage between EGR valve 6P connector
terminal No. 3 and body ground.
Go to step 16.
Go to step 12.
(cont’d)
Wire side of female terminals
Is the r esult OK ?
Is about 0 V indicated?
Is ther e about 5 V ?
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