PINPOINT TEST P : The GPSM Does Not Respond To The Scan Tool
NOTE:
Failure to disconnect the battery when instructed will result in false resistance readings. REFER to Battery, Mounting and Cables
- P1 CHECK THE GPSM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: GPSM.
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C2398-1 Ground
Is the voltage greater than 11 volts?
Yes GO to P2. No VERIFY the BCM fuse 29 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short. - P2 CHECK THE GPSM GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure:
Positive Lead Measurement / Action Negative Lead C2398-6 Ground
Is the resistance less than 3 ohms?
Yes GO to P3. No REPAIR the circuit. - P3 CHECK THE MS-CAN CIRCUITS BETWEEN THE GPSM AND THE DLC FOR AN OPEN
Are the resistances less than 3 ohms?
Yes CONNECT the negative battery cable. GO to P4. No REPAIR the circuit in question. - P4 CHECK FOR CORRECT GPSM OPERATION
- Ignition OFF.
- Disconnect and inspect the GPSM connector and related in-line connectors.
- Repair:
- corrosion (replace connector or terminals - clean module pins)
- damaged or bent pins - replace terminals/pins
- pushed-out pins - replace pins as necessary
- Reconnect the GPSM connector and related in-line connectors. Make sure they seat and latch correctly.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new GPSM. REFER to Information and Entertainment Systems Premium Plus (Premium Plus) or Sony ® Sound REFER to Information and Entertainment Systems Sony Sound . No The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.
