DTC Troubleshooting: P0653 (134)
DTC P0653:
 Sensor Reference Voltage B Circuit High Voltage
NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information.
  1. Turn the ignition switch ON (II).
  1. Clear the DTC with the HDS.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0653 indicated?
YES -
Go to Step 4 .
NO -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CMP sensor, the IMRC position sensor, the A/C pressure sensor, the output shaft (countershaft) speed sensor, the DPF differential pressure sensor (with DPF system), and the ECM.■
  1. Turn the ignition switch OFF, and wait 2 minutes.
  1. Disconnect ECM connectors No. 1 (96P) and No. 2 (58P).
  1. Turn the ignition switch ON (II).
  1. Measure voltage between body ground and ECM connector No. 1 terminals No. 3, No. 4, No. 5 (with DPF system), No. 29, and ECM connector No. 2 terminals No. 13 individually.
Is there battery voltage?
YES -
Repair short to power in the wire between the ECM connector terminals and these sensors, then go to Step 20 .
  • CMP sensor and ECM connector No. 1 terminal No. 29.
  • IMRC position sensor and ECM connector No. 1 terminal No. 3.
  • Output shaft (countershaft) speed sensor and ECM connector No. 1 terminal No. 4.
  • DPF differential pressure sensor and ECM connector No. 1 terminal No. 5 (with DPF system).
  • A/C pressure sensor and ECM connector No. 2 terminals No. 13.
NO -
Go to Step 8 .
  1. Turn the ignition switch OFF.
  1. Disconnect the connectors from these sensors:
    • CMP sensor
    • IMRC position sensor
    • Output shaft (countershaft) speed sensor
    • A/C pressure sensor
    • DPF differential pressure sensor (with DPF system)