Pinpoint Test A: No Communication With The Instrument Cluster: Testing
- A1 CHECK THE INSTRUMENT CLUSTER POWER SUPPLY
- Disconnect: Instrument Cluster C220.
- Key in ON position.
- Measure the voltage between the instrument cluster, harness side and ground as follows:
DIAGNOSIS PROCEDURE
| Instrument Cluster Connector-Pin |
Circuit |
| C220-1 |
1566 (RD/YE) |
| C220-3 |
483 (RD) |
| C220-5 |
295 (LB/PK) |
- Are the voltages greater than 10 volts?
- Yes
: GO to A2.
- No
: REPAIR the circuit in question. TEST the system for normal operation.
- A2 CHECK THE INSTRUMENT CLUSTER GROUND CIRCUITS
- Key in OFF position.
- Measure the resistance between the instrument cluster, harness side and ground as follows:
DIAGNOSIS PROCEDURE
| Instrument Cluster Connector-Pin |
Circuit |
| C220-2 |
1203 (BK/LB) |
| C220-4 |
1205 (BK) |
- Are the resistances less than 5 ohms?
- Yes
: REFER to MODULE COMMUNICATIONS NETWORK
to continue communication diagnosis.
- No
: REPAIR the circuit in question. TEST the system for normal operation.