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The engine control module (ECM) monitors the accessory voltage circuit and compares the voltage status with the information received from the body control module (BCM) via CAN serial data. If the ECM detects that the CAN voltage status information does not match the actual voltage feedback on the accessory voltage circuit, the DTC will be set.
Ignition switch is ACC.
The ECM detects power mode master accessory terminal status does not match the ignition switch position.
DTC P2536 is type C DTC. Refer to Powertrain Diagnostic Trouble Code (DTC) Type Definitions .
DTC P2536 is type C DTC. Refer to Powertrain Diagnostic Trouble Code (DTC) Type Definitions .
Step | Action | Value | Yes | No | ||||||
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1 | Did you perform the Diagnostic System Check? | - | Go to Step 2 | |||||||
2 | Observe the DTC information stored in the ECM with a scan tool. Are the DTCs that begin with "U" also set? | - | Go to applicable DTC table | Go to Step 3 | ||||||
3 | Are the DTCs related to system voltage also set? | - | Go to applicable DTC table | Go to Step 4 | ||||||
4 | Observe the DTC information stored in the BCM with a scan tool. Are there any DTCs stored? | - | Go to applicable DTC table | Go to Step 5 | ||||||
5 | Inspect the accessory voltage circuit between the wiring harness connector J1 terminal 73 of the ECM and the connector J1 terminal 19 of the BCM for the following conditions:
Did you find and correct the condition? | - | Go to Step 7 | Go to Step 6 | ||||||
6 | Replace the ECM. Refer to Control Module References . Did you complete the replacement? | - | Go to Step 7 | - | ||||||
7 |
Did the DTC fail this ignition? | - | Go to Step 2 | Go to Step 8 | ||||||
8 | Check if any additional DTCs are set. Are there any DTCs that have not been diagnosed? | - | Go to applicable DTC table | System OK |
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