Product Diagnostic Mode (PDM)
Product Diagnostic Mode (PDM) is used to help diagnose Inactive codes that may have been set during normal driving. This diagnostic mode increases the sensitivity of the fault sensing capabilities.
This procedure tests loose, degraded and intermittent connections. See “ault Code Isolation Procedure Index below. Use the Index as a guide to the wiring and connectors that are associated with the Inactive fault codes. Flex the wiring harness and connectors and attempt to recreate the fault after activating PDM.
PDM is only to be used by a trained service technician in an authorized dealer.
To enter PDM mode:
Note: The vehicle will not start in Product Diagnostic Mode.
(PDM). Turn vehicle key “OFF” and allow the system to power down to exit PDM.
- Vehicle must be stationary, engine must not be running, vehicle parking brake must be set.
- Connect ServiceRanger to the 9-Way Diagnostic Connector.
- Select the “View Fault Codes” screen.
- Perform two key clicks of the ignition switch starting with the key on, and ending with the key on.
Note: An “88” may show up in the dash at key on, which is a normal power-up test of the display.
- The gear display will flash a solid “PD” (Product Diagnostic Mode) and the mode will be activated.
- Flex the wiring harness and connectors and attempt to recreate the fault. If a fault becomes Active during PDM, ServiceRanger will display the fault with a status of Active.
- If a fault becomes Active during PDM, ServiceRanger will display the fault with a status of Active.
- If a fault is detected, exit PDM mode and perform the corresponding fault code troubleshooting procedure. See Fault Code Isolation Procedure Index below.
Note: Active codes set during PDM mode will not be stored as inactive.
- To exit PDM mode, power the system down by turning the key off.
PDM will only work with the following Inactive codes
9, 10, 14, 16, 17, 18, 19, 22, 24, 32, 33, 34, 35, 36, 38, 39, 40, 48, 49, 50, 51, 52, 56, 58, 59, 60, 61, 63, 76, 87, 88, 89, 95, 118