DTC Advanced Diagnostics: P1297
DTC P1297:Electrical Load Detector (ELD) Circuit Low Voltage (Engine Type: J35Y1, J35Y2)

General Description

The electrical load detector (ELD) is built into the under-hood fuse/relay box. It monitors the current fed to the keyless access control unit and sends a signal to the powertrain control module (PCM). If the ELD output voltage is extremely low, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status
Execution
Continuous
Sequence
None
Duration
5.0 seconds or more
DTC Type
Two drive cycles, MIL off
OBD Status
PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Enable Conditions
Condition
Minimum
Maximum
Battery voltage [BATTERY]
10.0 V
–
Engine start/stop button
ON mode
No active DTCs set (prevents monitor from running)
P1298
[ ]: HDS Parameter

Malfunction Threshold
The ELD output voltage [ELD SENSOR OUTPUT VOLTAGE] is 0.27 V or less for at least 5.0 seconds.

Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
ELD ELD line short to ground
ELD power supply line open
ELD failure
PCM internal circuit failure

Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, a Confirmed DTC and the freeze data are stored. The MIL does not come on.

Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.