Pinpoint Test G : The Tachometer Is Inoperative

WARNING: This page is about a different car, the 2018 Ford EcoSport. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions
See Tachometer. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

If the IPC does not receive the engine rpm data from the PCM for more than 5 seconds, the IPC defaults the tachometer to 0 rpm.

Possible Sources
- Communication concern
- PCM
- GWM concern
- IPC

G1 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST
- Using a diagnostic scan tool, perform the IPC self-test.
- Check for recorded Diagnostic Trouble Codes (DTCs) from the IPC self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to DTC Chart: Instrument Panel Cluster (IPC)

No GO to G2

G2 PERFORM THE PCM (POWERTRAIN CONTROL MODULE) KOEO (KEY ON, ENGINE OFF) SELF-TEST
- Using a diagnostic scan tool, perform the PCM KOEO self-test.
- Check for recorded Diagnostic Trouble Codes (DTCs) from the PCM self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to ELECTRONIC ENGINE CONTROLS (1.0L) or refer to ELECTRONIC ENGINE CONTROLS (2.0L)

No GO to G3

G3 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (DTCs).
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

No GO to G4

G4 PERFORM THE TACHOMETER ACTIVE COMMAND USING THE SCAN TOOL
- Using a diagnostic scan tool, view the IPC Parameter Identifications (PIDs).
- Select the IPC tachometer (TACH_IND) PID.
- NOTE: Make sure to set the scan tool to 0 rpm before beginning this step.
  
  Command the tachometer on and off while monitoring the tachometer.
Does the tachometer start at 0 rpm move to 8, 000 rpm (gas engine) or 6, 000 (diesel engine) and return to 0 rpm?

Yes Refer to PCM GUIDED ROUTINE TESTING

No INSTALL a new IPC. REFER to: Instrument Panel Cluster (IPC) .