Test A: No Communication With The Liftgate/Trunk Module (LTM)

PINPOINT TEST A: NO COMMUNICATION WITH THE LIFTGATE/TRUNK MODULE (LTM)

Normal Operation
The liftgate/trunk module (LTM) receives voltage from the battery junction box (BJB) through circuit 1190 (YE/BK), the central junction box (CJB) through circuit 1524 (DB) and through circuit 640 (RD/YE). The LTM grounds through circuits 57 (BK) and 676 (PK/OG). The LTM receives a voltage signal from the driver door module (DDM) when either the button on the driver door trim panel, the remote keyless entry (RKE) keypad or the RKE transmitter is pressed (twice on the RKE transmitter).

The LTM receives vehicle speed information from the PCM. The LTM will shut down the system if vehicle speed is above 5 km/h (3 mph). For diagnostics, the module uses the ISO network. Whenever battery voltage is lost to the LTM, luggage compartment lid motor or the luggage compartment lid closing motor, the system must be initialized.







This pinpoint test is intended to diagnose the following:
- Fuse(s)
- Wiring, terminals or connectors
- LTM

NOTE: ISO 9141 circuit 70 provides the communication link for this module. This module or another module(s) (must use circuit 70, also) may be shorted internally causing a loss of communication. First, attempt to communicate with another module(s) that uses circuit 70 as its communication link. If communication cannot be established with another module(s) on circuit 70, refer to Information Bus (Module Communications Network).

A1-A2: