B1420

DTC B1420

CIRCUIT DESCRIPTION
The BCM monitors the battery voltage through the battery positive voltage circuit

CONDITIONS FOR RUNNING THE DTC
The voltage supplied to the body control module is in the range of 7-26 volts.

CONDITIONS FOR SETTING THE DTC
The BCM senses a battery voltage below or above the specified range of 9-16 volts.

The above condition lasts for at least 1 second.

ACTION TAKEN WHEN THE DTC SETS
- The BCM will disable all its outputs when a high voltage condition is detected.
- The setting of this DTC inhibits the setting of other DTCs.

CONDITIONS FOR CLEARING THE DTC
- A current DTC clears when the malfunction is no longer present.
- A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

DIAGNOSTIC AIDS
- The following may cause an intermittent:
- A damaged terminal
- A backed out terminal
- A poor terminal tension
- A chafed wire
- A broken wire inside the insulation
- When diagnosing for an intermittent short or an open, manipulate the wire harness while watching the test equipment for changes.

TEST

Steps 1-6:

Steps 7-9: