P0748

Tests 1676 - 1681:

Tests 1682 - 1685:

Tests 1686 - 1689:

Tests 1690 - 1693:

Tests 1694 - 1697:

Test 1698:

SYMPTOM
P-0748 GOVERNOR PRESSURE SOLENOID/TRANS RELAY CKTS

WHEN MONITORED
Continuously with the key on.

SET CONDITION
This code is set if the voltage detected on the Governor Pressure Solenoid Control Circuit at the PCM is different than the expected voltage.

POSSIBLE CAUSES
- Fused B(+) feed to trans control relay open
- Governor pressure solenoid defective
- Solenoid and harness assembly defective
- Trans control relay defective
- Governor pressure solenoid wiring & connectors intermittent defect
- Governor pressure solenoid wiring & connectors observable defect
- Trans relay output circuit open
- Trans relay output circuit shorted to ground
- PCM defective
- PCM defective (resistance in range)
- Gov pressure solenoid control ckt short to ground
- Governor pressure solenoid control circuit open
- PCM defective (trans Harn/Sol)
- PCM defective (Gov press Sol)
- PCM defective (sht to ckts)