1. Check for continuity between ECM/PCM connector terminals E11 and E24.

Is there continuity?

YES | - | Repair short in the wires between ECM/PCM E11 (CANH line) and E24 (CANL line), then go to Step 18 .
NO | - | Go to Step 15 .

1. Check for continuity between ECM/PCM connector terminal E11 and the following connector terminals:

   Connector | Terminal
   --- | ---
   Gauge control module 30P | No. 24 (WHT)
   VSA modulator-control unit 47P | No. 14 (WHT)
   Navigation unit 20P | No. 8 (WHT)
   ACC unit 20P | No. 10 (WHT)
   LKAS control unit 26P | No. 12 (WHT)

Is there continuity between the ECM/PCM terminal and each of the terminals in the chart?

YES | - | Go to Step 16 .
NO | - | Repair open in the wire between the ECM/PCM and the appropriate connector, then go to Step 18 .

1. Check for continuity between ECM/PCM connector terminal E24 and the following connector terminals:

   Connector | Terminal
   --- | ---
   Gauge control module 30P | No. 23 (RED)
   VSA modulator-control unit 47P | No. 30 (RED)
   Navigation unit 20P | No. 18 (RED)
   ACC unit 20P | No. 20 (RED)
   LKAS control unit 26P | No. 25 (RED)

Is there continuity between the ECM/PCM terminal and each of the terminals in the chart?

YES | - | Go to Step 17 .
NO | - | Repair open in the wire between the ECM/PCM and the appropriate connector, then go to Step 18 .

1. Using the following chart. Select the row that most closely represents the combination of DTCs retrieved from the PGM-FI, VSA, driver support, and Body Electrical systems: Check connections at the control module indicated in the last column. If all connections are OK, then substitute the control module. After substitute the control module, check for DTCs with the HDS.

   PGM-FI | ABS/VSA | Driver support system | Body Electrical | Control module
   --- | --- | --- | --- | ---
   U0155 | 86-1 | 60 | B1168 B1169 B1178 | Gauge control module
   U0073 U0122 U0155 | 68-1 86-1 | 60 | B1168 B1169 B1178 | ECM/PCM
   U0073 U0122 U0155 | 68-1 86-1 | 60 | B1168 B1178 | VSA modulator-control unit
   U0073 U0104 | 68-1 86-1 | 60 | B1168 B1178 | ACC unit
   U0073 U0104 | 68-1 86-1 | 60 | B1168 B1178 | LKAS control unit

Are the DTCs still indicated?

YES | - | Substitute the remaining control modules, one at time, until the DTCs are no longer present, then replace the control module that made the DTCs go away. After replacing the faulty control module, go to Step 18 .
NO | - | Replace the faulty control module, then go to Step 18 .

1. Reconnect all connectors.

1. Turn the ignition switch ON (II).

1. Reset the ECM/PCM with the HDS.

1. Do the ECM/PCM idle learn procedure.

1. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES | - | If DTC U0073 and/or U0155 is indicated, check for poor connections or loose terminals at the gauge assembly, the VSA modulator-control unit, the navigation unit, the ACC unit, the LKAS control unit, and the ECM/PCM, then go to Step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO | - | Troubleshooting is complete.■