Is DTC P1297 indicated?
YES : Check for poor connections or loose terminals at the under-hood fuse/relay box and the PCM. If the PCM
was updated, substitute a known-good PCM See PCM REMOVAL AND INSTALLATION or PCM
UPDATE , then recheck. If the PCM was substituted, go to step 1.
NO : Troubleshooting is complete. If the PCM was substituted, replace the original PCM See PCM
REMOVAL AND INSTALLATION or PCM UPDATE . If any other Pending or Confirmed DTCs are
indicated, go to the indicated DTC's troubleshooting.
DTC P1298: ELD CIRCUIT HIGH VOLTAGE
Fig. 291: DTC Troubleshooting Flow Chart (P1298)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot, and
review the general troubleshooting information See HOW TO TROUBLESHOOT
THE A/T SYSTEM or HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS
SYSTEMS .
DTC Description
Confirmed DTC Pending DTC Freeze Frame
P1298 ELD CIRCUIT HIGH VOLTAGE
1. Problem verification:
ο‘
1. Turn the ignition switch to ON (II).
ο‘
2. Check the parameter(s) below with the HDS.
Threshold
Signal
Current conditions
Unit
Values Unit Values
ELECTRIC LOAD VALUE Less than 0.2 A
Do the current condition(s) match the threshold?
YES : The failure is duplicated. Go to step 2.
NO : Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at
the under-hood fuse/relay box and the PCM.
2. Open wire check (IG1 ACG line):
ο‘
1. Turn the ignition switch to LOCK (0).
2. Disconnect the following connector.
ο‘
Under-hood fuse/relay box 3P connector
ο‘
ο‘
3. Turn the ignition switch to ON (II).
4. Measure the voltage between test points 1 and 2.
Test condition IG ON (II)
Under-hood fuse/relay box 3P connector: disconnected
Test circuit IG1 ACG
Test point 1 Under-hood fuse/relay box 3P connector No. 3 (RED)
Test point 2 Body ground
Fig. 292: Measuring Voltage Between Under-Hood Fuse/Relay Box 3P Connector No. 3
(RED) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES : The IG1 ACG wire is OK. Go to step 3.
NO : Check the No. B2 (15 A) fuse in the under-dash fuse/relay box. If the fuse is OK, repair open in the
IG1 ACG wire between the No. B2 (15 A) fuse and the under-hood fuse/relay box, then do the repair
verification .
3. Open wire check (ELD line):
ο‘
ο‘
ο‘
1. Turn the ignition switch to LOCK (0).
2. Jump the SCS line with the HDS.
3. Disconnect the following connector.
PCM connector A (49P)
ο‘
4. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Under-hood fuse/relay box 3P connector: disconnected
PCM connector A (49P): disconnected
Test circuit ELD
Test point 1 PCM connector A (49P) No. 34 (WHT)
Test point 2 Under-hood fuse/relay box 3P connector No. 1 (WHT)
Fig. 293: Checking Continuity Between PCM Connector A (49P) No. 34 (WHT) And Under-
hood Fuse/Relay Box 3P Connector No. 1 (WHT)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : The ELD wire is OK. Go to step 4.
NO : Repair an open in the ELD wire between the PCM (A34) and the under-hood fuse/relay box, then
do the repair verification .
4. Open wire check (GND line):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Under-hood fuse/relay box 3P connector: disconnected
PCM connector A (49P): disconnected
Test circuit GND
Test point 1 Under-hood fuse/relay box 3P connector No. 2 (GRY)
Test point 2 Body ground
Fig. 294: Checking Continuity Between Under-Hood Fuse/Relay Box 3P Connector No. 2
(GRY) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : The GND wire is OK. Go to step 5.
NO : Repair an open in the GND wire between the under-hood fuse/relay box and G302, then do the
repair verification .
5. ELD check (substitution):
ο‘
ο‘
ο‘
1. SUBSTITUTE A KNOWN-GOOD ELD .
2. Turn the ignition switch to ON (II).
3. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or
HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
ο‘
ο‘
4. DO THE PCM IDLE LEARN PROCEDURE .
5. Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC Pending DTC Freeze Frame
P1298 ELD CIRCUIT HIGH VOLTAGE
Is DTC P1298 indicated?
YES : Update the PCM See PCM REMOVAL AND INSTALLATION or PCM UPDATE if it does
not have the latest software, or substitute a known-good PCM See PCM REMOVAL AND
INSTALLATION or PCM UPDATE , then do the repair verification .
NO : REPLACE THE ORIGINAL ELD , then do the repair verification .
REPAIR VERIFICATION
ο‘
ο‘
ο‘
1. Turn the ignition switch to LOCK (0).
2. Reconnect all connectors.
3. Turn the ignition switch to ON (II).
ο‘
4. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW
TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
ο‘
ο‘
5. DO THE PCM IDLE LEARN PROCEDURE .
6. Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC Pending DTC Freeze Frame
P1298 ELD CIRCUIT HIGH VOLTAGE
Is DTC P1298 indicated?
YES : Check for poor connections or loose terminals at the under-hood fuse/relay box and the PCM. If the PCM
was updated, substitute a known-good PCM See PCM REMOVAL AND INSTALLATION or PCM
UPDATE , then recheck. If the PCM was substituted, go to step 1.
NO : Troubleshooting is complete. If the PCM was substituted, replace the original PCM See PCM
REMOVAL AND INSTALLATION or PCM UPDATE . If any other Pending or Confirmed DTCs are
indicated, go to the indicated DTC's troubleshooting.
DTC P1454: FTP SENSOR CIRCUIT RANGE/PERFORMANCE PROBLEM
2024 Honda CR-V Owner's Manual
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