Mitsubishi L200. Manual - part 131

TROUBLESHOOTING

DIESEL FUEL

13A-320

Judgement Criterion

• The No. 3 exhaust gas temperature sensor (DPF 

temperature) detects the abnormally high temper-
ature.

or

• The estimated DPF centre temperature exceeds 

the specified value.

PROBABLE CAUSE

• Damage by the DPF with high temperature

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list.

• Refer to Data List Reference Table 

P.13A-542

.

a. Item 119: No. 3 exhaust gas temperature sen-

sor (DPF temperature)

Q: Is the check result normal?

YES : 

Replace the DPF. When the DPF is 

replaced, initialise the learning value (Refer 
to GROUP 00 

− Precautions Before Service 

− Initialisation Procedure For Learning 
Value in Diesel Particulate Filter (DPF) 
System ).

NO : 

Perform the diagnosis code classified check 
procedure for the sensor that has shown an 
abnormal data value (Refer to Inspection 
Chart for Diagnosis Code 

P.13A-21

).

TROUBLESHOOTING

DIESEL FUEL

13A-321

Code No. P1608: Battery Current Sensor System <Euro5>

OPERATION

• A power voltage of 5 V is supplied to the battery 

current sensor (terminal No. 1) from the engine-
ECU (terminal No. 148) and is earthed to the 
engine-ECU (terminal No. 155) from the battery 
current sensor (terminal No. 3).

• The battery current sensor (terminal No. 4) out-

puts a sensor signal, which is input into the 
engine-ECU (terminal No. 138).

FUNCTION

• The battery current sensor detects a battery cur-

rent and inputs a signal into the engine-ECU.

• In response to the signal, the engine-ECU con-

trols charging and discharging.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in "ON" position.

Judgment Criterion

• The battery current sensor output voltage is 0.2 V 

or less.

or

• The battery current sensor output voltage is 4.8 V 

or more.

PROBABLE CAUSES

• Failed battery current sensor

• Open/short circuit or harness damage in battery 

current sensor circuit or loose connector contact

• Failed engine-ECU

AKB00279

101 102

103104 105 106107 108109 110 111112 113 114115

118119 120 121122 123124 125126127 128 129130

131132 133 134135 136137 138139140 141142 143

146147 148 149150 151152 153154155 156 157158

117

145

116

144

2

4

1

3

AB

5 V

148

1

Battery current sensor

R-B

BR-Y

BR-B

Engine-ECU

138

155

4

3

Battery Current Sensor Circuit

C-103

A-152

Wire colour code
B: Black  LG: Light green  G: Green  L: Blue  W: White  Y: Yellow  SB: Sky blue  BR: Brown  O: Orange  GR: Grey
R: Red  P: Pink  V: Violet  PU: Purple  SI: Silver

Hall IC

TROUBLESHOOTING

DIESEL FUEL

13A-322

DIAGNOSIS PROCEDURE

STEP 1. Connector check: A-152 battery current 
sensor connector

Q: Is the check result normal?

YES : 

Go to Step 2 .

NO : 

Repair or replace the connector.

STEP 2. Check battery current sensor itself.

• Check battery current sensor itself (Refer to 

GROUP 54A 

− Battery − Inspection − Battery 

Current Sensor Check ).

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Replace the battery current sensor.

STEP 3. Perform voltage measurement at A-152 
battery current sensor connector.

• Disconnect connector and measure at harness 

side.

• Ignition switch: ON

• Voltage between terminal No. 1 and earth.

OK: 4.9 

− 5.1 V

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Go to Step 4 .

STEP 4. Connector check: C-103 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 5 .

NO : 

Repair or replace the connector.

AKB00274

1

3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

AB

AKB00274

1

3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

AB

AKA00090

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

146

147

148

149

150

151

152

153

154

155

156

157

158

117

145

116

144

C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

TROUBLESHOOTING

DIESEL FUEL

13A-323

STEP 5. Check harness between A-152 (terminal 
No. 1) battery current sensor connector and C-
103 (terminal No. 148) engine-ECU connector.

• Check power supply line for open/short circuit.

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair the damaged harness wire.

STEP 6. M.U.T.-III diagnosis code

• Reconfirmation of diagnosis code.

Q: Is the diagnosis code set?

YES : 

Replace the engine-ECU. When the engine-

ECU is replaced, write the chassis number 
(Refer to GROUP 00 

− Precautions Before 

Service 

− How to Perform Chassis Number 

Writing ). After replacing the engine-ECU, 
register the injector identification code and 
learn fuel injection (Refer to GROUP 00 

− 

Precautions Before Service 

− What The 

Common Rail Engine Learns ). After 
registering the injector identification code, 
carry out the forcible DPF regeneration. 
(Refer to GROUP 17 

− Emission Control − 

Diesel Particulate Filter (DPF) System 

− 

Forcible DPF Regeneration ).

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use Troubleshooting/

Inspection Service Points 

− How to Cope 

with Intermittent Malfunctions ).

STEP 7. Perform resistance measurement at A-
152 battery current sensor connector.

• Disconnect connector and measure at harness 

side.

• Resistance between terminal No. 3 and earth.

OK: Continuity (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 10 .

NO : 

Go to Step 8 .

AKB00274

1

3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

AB

AKA00090

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

146

147

148

149

150

151

152

153

154

155

156

157

158

117

145

116

144

C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

AKB00274

1

3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

AB