Pinpoint Test 3: DTC C1862 - Contactor Circuit Failure
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PINPOINT TEST 3: DTC C1862 - CONTACTOR CIRCUIT FAILURE - HYBRID
Normal Operation
With the engine running, the battery power off function may be triggered by an open condition in the front and/or rear inertia fuel shut off (IFS) switches, the high-voltage interlock circuit or the electrical interlock (EL I) circuit (fuse protected by the battery junction box [BJB] fuse 26 [5A]). The IFS switch opens and causes the battery power off mode to occur, no DTCs are set. Also, if the IFS switch is open, a power reset indicator in the instrument cluster (IC) illuminates.
- DTC C1862 (Contactor Circuit Failure) - The PCM monitors the frequency signal the battery control module (BCM) sends out on the battery power off circuit (GY/V). With the ignition switch in the ON position and the engine on or off (the engine must have run at least once after the key was cycled to ON), the BCM monitors the contactors continuously. During a power down (key OFF) sequence, one or both of the contactors may cause the BCM to set this DTC if they fail.
Possible Causes
- High-voltage traction battery (HVTB)
- Service disconnect plug
Diagnostic Procedure
WARNING:To prevent the risk of high-voltage shock, always follow precisely all warnings and service instructions, including instructions to depower the system. The high-voltage hybrid system utilizes approximately 300 volts DC, provided through high-voltage cables to its components and modules. The high-voltage cables and wiring are identified by orange harness tape or orange wire covering. All high-voltage components are marked with high-voltage warning labels with a high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death.
