Diagnostic Test

WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

TEST FOR INTERMITTENT CONDITION
Turn the ignition on.

With the scan tool, record and erase TIPM DTC's.

Cycle the ignition from on to off 3 times.

Turn the ignition on.

With the scan tool, read active TIPM DTC's.

Does the scan tool display this DTC as active?

Yes
1. Go To 2.
No
1. The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
MEASURE VOLTAGE AT TIPM
Gain access to the Totally Integrated Power Module C5 harness connector, but do not disconnect.

Backprobe and measure the voltage on both the (D55) CAN B Bus (+) and the (D54) CAN B (-) circuits.

Does the voltage read approximately 4.65 - 4.98 volts on the (D54) CAN B Bus (-) and 0.39 - 0.46 volts on the (D55) CAN B (+) circuits?

Yes
1. Go To 3.
No - Voltage Between 0.3 - 0.7 Volts on Both Circuits
1. Go To 9.
No - Voltage Reads 0 Volts on Either Circuit
1. Go To 7.
No - Voltage Above 10 Volts on Either Circuit
1. Go To 5.
(D55) CAN B BUS (+) CIRCUIT OPEN

Fig 1: Measuring Voltage Of (D55) CAN B Bus (+) Circuit
Courtesy of CHRYSLER LLC

Turn the ignition on.

With the scan tool select ECU View.

Using a fused jumper wire, connect one end to ground and with the other end backprobe the (D54) CAN B Bus (-) circuit at the TIPM C5 harness connector.

NOTE: A red "X" will appear next to modules that can no longer communicate on the Bus.

Did a red "X" appear next to any modules on the scan tool?

Yes
1. Using the Wiring Diagrams to further isolate the open in the circuit, repair the (D55) CAN B Bus (+) circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Go To 4.
(D54) CAN B BUS (-) CIRCUIT OPEN

Fig 2: Measuring Voltage Of (D54) CAN B Bus (-) Circuit
Courtesy of CHRYSLER LLC

With the scan tool select ECU View.

Using a fused jumper wire, connect one end to ground and with the other end backprobe the (D55) CAN B Bus (+) circuit at the TIPM C5 harness connector.

NOTE: A red "X" will appear next to modules that can no longer communicate on the Bus.

Did a red "X" appear next to any modules on the scan tool?

Yes
1. Using the Wiring Diagrams to further isolate the open in the circuit, repair the (D54) CAN B Bus (-) circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Inspect the wiring and connectors for damage. If OK, replace and program the Totally Integrated Power Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .
(D55) CAN B BUS (+) CIRCUIT FOR A SHORT TO VOLTAGE

Fig 3: Measuring Voltage Between (D55) CAN B Bus (+) Circuit & Ground
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Totally Integrated Power Module C5 harness connector.

Turn the ignition on.

Measure the voltage between the (D55) CAN B Bus (+) circuit and ground.

Is the voltage above 10.0 volts?

Yes
1. Disconnect each CAN B Bus module one at a time while observing the voltage to determine if the short is caused by an internal short within a module. Replace the module, in accordance with the service information, that when disconnected eliminates the short to voltage. If the short condition is still present with all CAN B Bus modules disconnected use the Wiring Diagrams to help isolate and repair the (D55) CAN B Bus (+) circuit for a short to voltage.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Go To 6.
(D54) CAN B BUS (-) CIRCUIT FOR A SHORT TO VOLTAGE

Fig 4: Measuring Voltage Between (D54) CAN B Bus (-) Circuit & Ground
Courtesy of CHRYSLER LLC

Measure the voltage between the (D54) CAN B Bus (-) circuit and ground.

Is the voltage above 10.0 volts?

Yes
1. Disconnect each CAN B Bus module one at a time while observing the voltage to determine if the short is caused by an internal short within a module. Replace the module, in accordance with the service information, that when disconnected eliminates the short to voltage. If the short condition is still present with all CAN B Bus modules disconnected use the Wiring Diagrams to help isolate and repair the (D54) CAN B Bus (-) circuit for a short to voltage.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Inspect the wiring and connectors for damage. If OK, replace and program the Totally Integrated Power Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .
(D55) CAN B BUS (+) CIRCUIT FOR A SHORT TO GROUND

Fig 5: Measuring Resistance Between Ground & (D55) CAN B Bus (+) Circuit
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Totally Integrated Power Module C5 harness connector.

Measure the resistance between ground and the (D55) CAN B Bus (+) circuit.

Is the resistance above 1000.0 ohms?

Yes
1. Go To 8.
No
1. Disconnect each CAN B Bus module one at a time while observing the resistance to determine if the short is caused by an internal short within a module. Replace the module, in accordance with the service information, that when disconnected eliminates the short to ground. If the short condition is still present with all CAN B Bus modules disconnected use the Wiring Diagrams to help isolate and repair the (D55) CAN B Bus (+) circuit for a short to ground.
2. Perform BODY VERIFICATION TEST - VER 1 .
(D54) CAN B BUS (-) CIRCUIT FOR A SHORT TO GROUND

Fig 6: Measuring Resistance Between Ground & (D54) CAN B Bus (-) Circuit
Courtesy of CHRYSLER LLC

Measure the resistance between ground and the (D54) CAN B Bus (-) circuit.

Is the resistance above 1000.0 ohms?

Yes
1. Inspect the wiring and connectors for damage. If OK, replace and program the Totally Integrated Power Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Disconnect each CAN B Bus module one at a time while observing the resistance to determine if the short is caused by an internal short within a module. Replace the module, in accordance with the service information, that when disconnected eliminates the short to ground. If the short condition is still present with all CAN B Bus modules disconnected use the Wiring Diagrams to help isolate and repair the (D54) CAN B Bus (-) circuit for a short to ground.
2. Perform BODY VERIFICATION TEST - VER 1 .
(D55) CAN B BUS (+) CIRCUIT SHORTED TO THE (D54) CAN B BUS (-) CIRCUIT

Fig 7: Measuring Resistance Between (D55) CAN B Bus (+) Circuit & (D54) CAN B Bus (-) Circuit
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Totally Integrated Power Module C5 harness connector.

Measure the resistance between the (D55) CAN B Bus (+) circuit and (D54) CAN B Bus (-) circuit.

Is the resistance below 10K ohms?

Yes
1. Disconnect each CAN B Bus module one at a time while observing the resistance to determine if the short is caused by an internal short within a module. Replace the module, in accordance with the service information, that when disconnected eliminates the short between the two circuits. If the short condition is still present with all CAN B Bus modules disconnected use the Wiring Diagrams to help isolate and repair the (D55) CAN B Bus (+) circuit for a short to the (D54) CAN B Bus (-) circuit.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Inspect the wiring and connectors for damage. If OK, replace and program the Totally Integrated Power Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .