NO RESPONSE FROM PCM (POWERTRAIN CONTROL MODULE) - GAS
NO RESPONSE FROM PCM (POWERTRAIN CONTROL MODULE) - GAS
For a complete wiring diagram, refer to the Wiring Information.
Possible Causes |
|---|
| (A209) FUSED B(+) CIRCUIT OPEN OR SHORTED |
| (Z903) GROUND CIRCUIT OPEN |
| (F942) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN OR SHORTED |
| (F342) FUSED ASD/MAIN RELAY OUTPUT CIRCUIT OPEN OR SHORTED |
| (D65) CAN C BUS (+) CIRCUIT OPEN |
| (D64) CAN C BUS (-) CIRCUIT OPEN |
| POWERTRAIN CONTROL MODULE (PCM) |
1. TEST FOR INTERMITTENT CONDITION
| NOTE: | Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. |
| 1. | Turn the ignition on. |
| NOTE: | Make sure the Ignition Off Draw (IOD) fuse is installed and battery voltage is between 10.0 and 16.0 volts. |
| 2. | With the scan tool, read the module status. |
| NOTE: | Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. |
Does the scan tool indicate that the module is active on the bus?
Yes
- The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
No
- Go To 2
2. CHECK THE (A209) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT
 |
| 1. | Turn the ignition off. |
| 2. | Disconnect the PCM C1 harness connector. |
| 3. | Using a 12-volt test light connected to ground, check the (A209) Fused B(+) circuit. |
Does the test light illuminate brightly?
Yes
- Go To 3
No
- Repair the open or short in the (A209) Fused B(+) circuit.
-
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM)
- Standard Procedure).
3. CHECK THE (Z903) GROUND CIRCUITS FOR AN OPEN
| 1. | Using a 12-volt test light connected to 12-volts, check the (Z903) Ground circuits. |
Does the test light illuminate brightly for each circuit?
Yes
- Go To 4
No
- Repair the open in the (Z903) Ground circuit.
- Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
4. CHECK THE (F942) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT FOR AN OPEN OR SHORT
 |
| 1. | Turn the ignition on. |
| 2. | Using a 12-volt test light connected to ground, check the (F942) Fused Ignition Switch Output (Run-Start) circuit. |
Does the test light illuminate brightly?
Yes
- Go To 5
No
- Repair the open or short in the (F942) Fused Ignition Switch Output (Run-Start) circuit.
-
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM)
- Standard Procedure).
5. CHECK THE (F342) FUSED ASD RELAY OUTPUT CIRCUIT FOR AN OPEN OR SHORT
 |
| 1. | Remove the ASD/Main Relay. |
| 2. | Connect a fused jumper wire between terminals 30 and 87. |
| 3. | Using a 12-volt test light connected to ground, check the (F342) Fused ASD Relay Output circuit. |
Does the test light illuminate brightly?
Yes
- Go To 6
No
- Repair the open or short in the (F342) Fused ASD Relay Output circuit.
-
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM)
- Standard Procedure).
6. CHECK THE (D65) CAN C BUS (+) CIRCUIT FOR AN OPEN
| 1. | Turn the ignition off. |
| 2. | Disconnect the TIPM C1 harness connector. |
| 3. | Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C1 harness connector and the PCM C1 harness connector. |
Is the resistance below 5.0 Ohms?
Yes
- Go To 7
No
- Repair the open in the (D65) CAN C Bus (+) circuit.
- Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
7. CHECK THE (D64) CAN C BUS (-) CIRCUIT FOR AN OPEN
| 1. | Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C1 harness connector and the PCM C1 harness connector. |
Is the resistance below 5.0 Ohms?
Yes
- Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. (Refer to 08 - Electrical/8E - Electronic Control Modules/MODULE, Powertrain Control - Removal) .
- Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
- Repair the open in the (D64) CAN C Bus (-) circuit.
- Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).