Step | Action | Value | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
Schematic Reference: Engine Controls Schematics | ||||||||
1 | Does the exhaust brake relay turn ON and turn OFF? | -- | Go to Step 2 | -- | ||||
2 | Does DTC 0024 set? | -- | Go to DTC 0024 | Go to Step 3 | ||||
3 | Measure the voltage at the following points during deceleration at the ECM ACC 1 or ECM ACC 2:
Does each voltage measure less than the specified value? | 1.4 V | Go to Step 5 | Go to Step 4 | ||||
4 | Inspect the brake pedal linkage lever condition and/or inspect the acceleration sensor adjustment. Did you find a problem? | -- | Go to Step 10 | Go to Step 9 | ||||
5 | Measure the voltage between pin number 20 (EXB/SW) and pin number 111 (GND) at the ECM side connector, with the key switch ON and the exhaust brake switch ON. Does the voltage measure near the specified value? | 12 V | Go to Step 6 | Go to Step 11 | ||||
6 | Measure the voltage between pin number 7 (CL/SW) and pin number 111 (GND) at the ECM side connector, with the key switch ON and clutch pedal not depressed. Does the voltage measure near the specified value? | 12 V | Go to Step 7 | Go to Step 12 | ||||
7 |
Does the relay operate? | -- | Go to Step 8 | Go to Step 9 | ||||
8 |
Did the relay turn ON and OFF? | -- | Go to Step 14 | Go to Step 13 | ||||
9 | Replace the exhaust brake relay. Did you complete the replacement? | -- | Go to Step 14 | -- | ||||
10 | Repair/readjust the brake pedal linkage lever condition and/or the exhaust brake sensor fixing condition. Did you complete the action? | -- | Go to Step 14 | -- | ||||
11 | Replace the exhaust brake switch or repair the wiring harness. Did you complete the replacement? | -- | Go to Step 14 | -- | ||||
12 | Replace the clutch switch or repair the wiring harness. Did you complete the replacement? | -- | Go to Step 14 | -- | ||||
13 | Replace the ECM, refer to Engine Control Module Replacement/Restore Fuel Rate Data . Did you complete the replacement? | -- | Go to Step 14 | -- | ||||
14 | Does the exhaust brake operate normally? | -- | System OK | Go to Step 1 | ||||
